qzmjef 发表于 2024-8-22 14:49:50

九维团队-青队（处置）| WorkMiner挖矿木马应急处置手册


    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_gif/hiaiaLeG6N1zItD3hicyicTUxCsdYyvSZWKOQ4y3CslMX5EINOxRsoicGxHxJnwtXjIau4usI94yHUKXTqh4LyuVL4A/640?wx_fmt=gif&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1" style="width: 50%; margin-bottom: 20px;"></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">文/章/导/览</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">1、</span>木马介绍</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">2、</span><span style="color: black;">怎样</span><span style="color: black;">发掘</span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">3、</span>处置流程</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;3.1 定位挖坑木马进程</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;3.2 定位挖矿木马的执行文件</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;3.3 结束挖矿进程</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">4、</span>沙箱分析</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">定位挖矿源文件</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;4.1 查看进程详情</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;4.2 查看网络<span style="color: black;">行径</span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;4.3 查看释放文件</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">5、</span>清除残余文件</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;5.1 删除挖矿木马<span style="color: black;">关联</span>文件</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;5.2 清除恶意程序系统文件中添加的恶意代码</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">5.3 恢复系统命令</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;5.4 恢复防火墙规则</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">6、</span>总结</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;6.1 开机<span style="color: black;">起步</span>文件</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;6.2 SSH存放公钥文件</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;6.3 计划任务文件</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;6.4 /usr/目录</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;6.5 防火墙开放端口</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;6.6 系统命令</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">7、</span>拓展知识点</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&nbsp;&nbsp;&nbsp;&nbsp;7.1 系统命令被劫持</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">8、</span>防护<span style="color: black;">意见</span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">01</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">木马介绍</span></strong></p><img src="https://mmbiz.qpic.cn/mmbiz_gif/Ljib4So7yuWhQAbic9UmYOLC7SZI2EZ7DAq35tjyLlkSGt1sicwwQeVmgNjaWU8eJPJ7eh03K3QRIpI9WK40lZS0A/640?wx_fmt=gif&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">该挖矿木马采用go语言编译，<span style="color: black;">重点</span>针对Linux系统，在入侵终端后会占用主机资源进行挖矿，影响其他正常业务进程的运转，传播过程中会修改防火墙规则，开放<span style="color: black;">关联</span>端口，探测同网段其他终端并进行SSH暴力破解，若<span style="color: black;">不可</span><span style="color: black;">即时</span>阻断，容易<span style="color: black;">导致</span>大面积污染。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">02</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;"><span style="color: black;">怎样</span><span style="color: black;">发掘</span></span></strong></p><img src="https://mmbiz.qpic.cn/mmbiz_gif/Ljib4So7yuWhQAbic9UmYOLC7SZI2EZ7DAq35tjyLlkSGt1sicwwQeVmgNjaWU8eJPJ7eh03K3QRIpI9WK40lZS0A/640?wx_fmt=gif&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、安全设备检测到挖矿<span style="color: black;">关联</span>告警。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、主机<span style="color: black;">运用</span>过程中<span style="color: black;">出现</span>卡顿现象，CPU占用率过高。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">03</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">处置流程</strong></span></p><img src="https://mmbiz.qpic.cn/mmbiz_gif/Ljib4So7yuWhQAbic9UmYOLC7SZI2EZ7DAq35tjyLlkSGt1sicwwQeVmgNjaWU8eJPJ7eh03K3QRIpI9WK40lZS0A/640?wx_fmt=gif&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">3.1 定位挖矿木马进程</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">查看进程以及进程所占用的资源<span style="color: black;">体积</span>：</p><span style="color: black;"><span style="color: black;">top</span> <span style="color: black;">#<span style="color: black;">运用</span>top命令能够<span style="color: black;">表示</span>系统中各个进程的资源占用<span style="color: black;">状况</span>，若系统中存在挖矿木马<span style="color: black;">能够</span><span style="color: black;">经过</span>top命令<span style="color: black;">即时</span><span style="color: black;">发掘</span>。</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feT313B9dvy1esNs4WRPiafj66mMuiaVgbjRVuZToiaHmjeTBZT5w0CAJ0iaA/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、<span style="color: black;">能够</span>看到PID为42101，名为xmr的进程CPU<span style="color: black;">运用</span>率为81.1%；</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、<span style="color: black;">按照</span>进程名xmr<span style="color: black;">能够</span>判断该挖矿木马大概率为WorkMiner挖矿木马（<span style="color: black;">不可</span><span style="color: black;">做为</span><span style="color: black;">独一</span>判断依据，仅<span style="color: black;">做为</span>一个思路，<span style="color: black;">由于</span>进程名<span style="color: black;">能够</span>被改变）。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">3.2 定位挖矿木马的执行文件</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">按照</span>PID<span style="color: black;">查询</span>挖矿木马的<span style="color: black;">起步</span>目录。</p><span style="color: black;">ls -lai /proc/<span style="color: black;">42101</span> | <span style="color: black;">grep</span> exe <span style="color: black;">#查看PID为42101进程的执行文件的所在目录，并列出<span style="color: black;">仔细</span>信息。</span></span><span style="color: black;"><span style="color: black;">################</span></span><span style="color: black;">ls -lai <span style="color: black;">#将当前目录下所有文件的<span style="color: black;">仔细</span>信息<span style="color: black;">包含</span>inode号<span style="color: black;">所有</span>列出来。</span></span><span style="color: black;">/proc/PID <span style="color: black;">#在/proc/目录下每一个进程都有一个相应的文件，<span style="color: black;">包括</span>重要信息。</span></span><span style="color: black;">ls -lai /proc/PID <span style="color: black;">#可查看该PID下的所有<span style="color: black;">仔细</span>信息。</span></span><span style="color: black;">ls -lai /proc/PID | <span style="color: black;">grep</span> exe <span style="color: black;">#查看链接到进程的执行命令文件，并列出<span style="color: black;">仔细</span>信息。</span></span><span style="color: black;"><span style="color: black;">################</span></span><span style="color: black;">/proc/PID/cmdline <span style="color: black;">#用于<span style="color: black;">起始</span>进程的命令</span></span><span style="color: black;">/proc/PID/cwd <span style="color: black;">#当前进程工作目录的一个链接</span></span><span style="color: black;">/proc/PID/environ <span style="color: black;">#可用进程环境变量的列表</span></span><span style="color: black;">/proc/PID/exe <span style="color: black;">#正在进程中运行的程序的执行文件</span></span><span style="color: black;">/proc/PID/fd <span style="color: black;">#进程打开的每一个文件的链接</span></span><span style="color: black;">/proc/PID/mem <span style="color: black;">#进程在内存中的内容</span></span><span style="color: black;">/proc/PID/<span style="color: black;">stat</span> <span style="color: black;">#进程的状态信息</span></span><span style="color: black;">/proc/PID/statm <span style="color: black;">#进程的内存<span style="color: black;">运用</span>信息</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTRa4jvPOVr4dGrv0yNg7TibthlTUk0FBib3gicWtAQZyK4bQHDMX3VtNAw/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">按照</span>以上命令找到xmr进程的执行文件是/tmp/xmr。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">3.3 结束挖矿进程</strong></p><span style="color: black;"><span style="color: black;">kill</span> -9 42101 <span style="color: black;">#强制杀死该挖矿进程</span></span><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTLMLUZ0FicSVVUwOOXo0bfjU1ZuIRxFgN5r5gYqibv5odVrDrOsdOtwdA/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">再次<span style="color: black;">运用</span>top命令查看，CPU已恢复正常</p><span style="color: black;">top</span><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTznrCiaVdyaqicHscicibT2ttLLBIfRnib69ZQ3p8rLQA8TJ8nOs22nPDE9g/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">04</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">沙箱分析</strong></span></p><img src="https://mmbiz.qpic.cn/mmbiz_gif/Ljib4So7yuWhQAbic9UmYOLC7SZI2EZ7DAq35tjyLlkSGt1sicwwQeVmgNjaWU8eJPJ7eh03K3QRIpI9WK40lZS0A/640?wx_fmt=gif&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">定位挖矿源文文件</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">经过</span>查看计划任务，找到挖矿木马所在文件目录。将挖矿木马文件压缩打包上传至云沙箱进行分析。</p><span style="color: black;"><span style="color: black;">cat</span> /etc/crontab</span><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTf8Y3uBSMJ4QJnq9wIKiaM3UnXzJv786S2rQuOKcWZCNHB2iaRUmiaaFAQ/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">4.1、查看进程详情。</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">经过</span>沙箱分析，查看进程详情，<span style="color: black;">咱们</span><span style="color: black;">能够</span>看到该挖矿木马共释放了以下进程。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.1.1 修改系统命令</strong></span></p><span style="color: black;"><span style="color: black;">sh</span> -c mv /usr/bin/wget /usr/bin/wget1&amp; <span style="color: black;">#将wget命令重命名为wget1</span></span><span style="color: black;">sh -c mv /usr/bin/curl /usr/bin/curl1&amp; <span style="color: black;">#将curl命令重命名为curl1</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTO2n6euicFfOElrItYhIGIrLkRrgYhOU5wxrtwibKYdlazURl2s1dZMQg/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.1.2 执行挖矿程序</strong></span></p><span style="color: black;"><span style="color: black;">chmod</span> +x /tmp/xmr <span style="color: black;">#给xmr添加执行权限</span></span><span style="color: black;">xmr <span style="color: black;">#运行xmr</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTdJicUIic7OhriafVkYp6ITWeWRECRvUdP2c4BWQAk8O3IbMBpq9iabPZWw/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.1.3 创建<span style="color: black;">隐匿</span>文件夹</strong></span></p><span style="color: black;"><span style="color: black;">sh</span> -c mkdir -p /usr/.work</span><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTOC9ITOe2HGB3Hmt81d1Uxu6sV4IcsN9wk4bdrO8tWuVJPRjVlXv01w/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.1.4 实现SSH免密登录</strong></span></p><span style="color: black;">sh -c echo <span style="color: black;">&gt;&gt; </span>/root/.ssh/authorized_keys <span style="color: black;">#创建/root/.ssh/authorized_keys</span></span><span style="color: black;">sh <span style="color: black;">600</span> /root/.ssh/authorized_keys <span style="color: black;">#赋予600权限</span></span><span style="color: black;">sh -c echo <span style="color: black;">"ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDc3BlbiQaznPT8TScrs9YIzmrpI9Lpa4LtCjB5z0LuQ4o6XwvzomxAixn2F1jaUl175Cxcg3PmUsPOLE+WeWicKqL2YZ46SotjZgnS6JjXpuZVi7V0DSiXu0itlwWDC9m8huBvUBSIsDCsgb9OeG6rlrCyZgTW+qZciK+KZ8rwlFp3CFyxoF2122ueOnl5pAUCy1iHqGun03dMdUxA1d3KnxSZ3NQrYiH69dc8/YhV4SriOW9psc0pv9KeBLF0OXHtEAdbnSlwfk2uTjjBMK0nDidl7wS52Ygi/H4+P+4EXkSzf4Jj4/L6P3c5rLC3/l3RFdo1T7EQ8fH6NsTYJNZ7 root@u911"</span> <span style="color: black;">&gt;&gt; </span>/root/.ssh/authorized_keys<span style="color: black;">#将公钥写入/root/.ssh/authorized_keys实现免密登录</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTn6BVRZLxR0ncXZbI9WzhGnibGI2wmYaKR90ycduvZwd8mNUnW5iamUSg/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.1.5 修改防火墙规则，开放UDP和TCP端口</strong></span></p><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I INPUT -p tcp --dport 8012 -j ACCEPT </span></span><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I OUTPUT -p tcp --sport 8012 -j ACCEPT</span></span><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I PREROUTING -t nat -p tcp --dport 8012 -j ACCEPT </span></span><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I INPUT -p udp --dport 2051 -j ACCEPT </span></span><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I OUTPUT -p udp --sport 2051 -j ACCEPT</span></span><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I PREROUTING -t nat -p udp --dport 2051 -j ACCEPT </span></span><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I POSTROUTING -t nat -p udp --sport 2051 -j ACCEPT</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTA525jKpgjkmXORxXetOMIg0hTCVleh6kohRWvURY7HWLvrTL8UB5zQ/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">4.2 查看网络<span style="color: black;">行径</span></strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">以下为该挖矿木马连接的矿池以及境外恶意IP：</p><span style="color: black;"><span style="color: black;">xmr</span><span style="color: black;">.crypto-pool</span><span style="color: black;">.fr</span> #矿池</span><span style="color: black;">171<span style="color: black;">.7</span><span style="color: black;">.XXX</span><span style="color: black;">.XX</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#境外恶意<span style="color: black;">IP</span></span><span style="color: black;">194<span style="color: black;">.58</span><span style="color: black;">.XXX</span><span style="color: black;">.XX</span> #境外恶意<span style="color: black;">IP</span></span><span style="color: black;">41<span style="color: black;">.88</span><span style="color: black;">.XXX</span><span style="color: black;">.XX</span> #境外恶意<span style="color: black;">IP</span></span><span style="color: black;">84<span style="color: black;">.54</span><span style="color: black;">.XXX</span><span style="color: black;">.XX</span> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#境外恶意<span style="color: black;">IP</span></span><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zIM5h2hibxHFDiaDhINfBvWOwVlH9uicUgmYxGbspwZOJ0gOy6Rzol5zy8KqJkDd5eMql3Z8XEF5z4ibg/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">4.3 查看释放文件</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">经过</span>查看释放文件，可分析出该挖矿木马都释放了<span style="color: black;">那些</span>文件，<span style="color: black;">经过</span>这些文件来确定<span style="color: black;">咱们</span>的排查思路。</p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTiagc1rgrYiaNIfYDwVYmnS5AJgfRygwds3iaYqoiclSibuKqib5cdsibjV6PA/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">按照</span>沙箱<span style="color: black;">表示</span>的内容共释放了以下8个文件。</p><span style="color: black;">/etc/rc.d/rc.local </span><span style="color: black;">/root/.ssh/authorized_keys </span><span style="color: black;">/tmp/config.json </span><span style="color: black;">/tmp/xmr </span><span style="color: black;">/tmp/secure.sh</span><span style="color: black;">/tmp/auth.sh </span><span style="color: black;">/<span style="color: black;">var</span>/spool/cron/root </span><span style="color: black;">/etc/crontab</span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">对照以上释放的8个恶意文件进行上机重点排查，排查结果如下：</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.3.1 开机自<span style="color: black;">起步</span></strong></span></p><span style="color: black;">/etc/rc.d/rc.local <span style="color: black;">#/etc/rc.d/init.d/目录下的脚本就类似于windows中的注册表，在系统<span style="color: black;">起步</span>的时候某些指定脚本将被执行。</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTgEMqiaMhb6J45FIPqMfka3PFSboVsl6o1n1nBzqsMNUYiaYTfnnPw8rA/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.3.2 ssh实现免密登录</strong></span></p><span style="color: black;">/root/.ssh/authorized_keys <span style="color: black;">#<span style="color: black;">经过</span>/root/.ssh/authorized_keys文件可实现ssh免密登录</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTMNhpH7Pb7jS2MQQPpfaJhXKQUb7OlXUiaRMJnbOrF7Zcwpr1ogQSUFQ/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;"><strong style="color: blue;">4.3.3 添加计划任务</strong><span style="color: black;">/<span style="color: black;">var</span>/spool/cron/root <span style="color: black;">#计划任务:这个目录是以账号来区分<span style="color: black;">每一个</span>用户自己的执行计划</span></span><span style="color: black;">/etc/crontab <span style="color: black;">#计划任务:系统执行计划，需要在五个*后面加上用户 </span></span><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTyWGx1GfZ6iam5OQVicgvqQR9iaEq50I9zzKymjn0T4XdbRErIoqJPErYg/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTRV2IqC1hvWEgJ64lhO4meCusqMpibZoCpMCDKjmX2dFSp3zvFSQOzyw/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.3.4 挖矿木马配置文件</strong></span></p><span style="color: black;">/tmp/config.json <span style="color: black;">#xmrig挖矿配置文件</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p><img src="https://mmbiz.qpic.cn/mmbiz_png/hiaiaLeG6N1zJ41Ofw1ibFajibO0I6et3feTQ3oLajrQoUYK1diahdpxkjpmae8YIDn1K1OibjNJvfCqSic77LxFnYIhg/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1&amp;wx_co=1" style="width: 50%; margin-bottom: 20px;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.3.5 封禁爆破IP</strong></span></p><span style="color: black;">/tmp/secure.sh <span style="color: black;">#封禁爆破IP</span></span><span style="color: black;">/tmp/auth.sh&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: black;">#封禁爆破IP</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"></p><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">4.3.6 xmrig挖矿程序</strong></span></p><span style="color: black;">xmr</span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">05</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">清理残余文件</span></strong></p><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">注：在删除任何程序前<span style="color: black;">必定</span>要获取客户的同意，<span style="color: black;">而后</span>做好备份，再做删除操作。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">5.1 删除挖矿木马<span style="color: black;">关联</span>文件</strong></p><span style="color: black;">/tmp/config.json&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: black;">#挖矿配置文件</span></span><span style="color: black;">/tmp/xmr <span style="color: black;">#挖矿程序 </span></span><span style="color: black;">/tmp/secure.sh <span style="color: black;">#挖矿木马创建的恶意脚本文件</span></span><span style="color: black;">/tmp/auth.sh <span style="color: black;">#挖矿木马创建的恶意脚本文件</span></span><span style="color: black;">/usr/.work <span style="color: black;">#由恶意程序创建的文件夹，文件夹中均为挖矿木马<span style="color: black;">关联</span>的程序</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">&nbsp;5.2 清除恶意程序系统文件中添加的恶意代码</strong></p><span style="color: black;">/root/.ssh/authorized_keys&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: black;">#删除挖矿木马添加的ssh公钥</span></span><span style="color: black;">/etc/rc.d/rc.local<span style="color: black;">#删除挖矿木马添加的开机<span style="color: black;">起步</span>项</span></span><span style="color: black;">/<span style="color: black;">var</span>/spool/cron/root <span style="color: black;">#删除挖矿木马添加的计划任务 </span></span><span style="color: black;">/etc/crontab <span style="color: black;">#删除挖矿木马添加的计划任务</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">5.3 恢复系统命令</strong></p><span style="color: black;"><span style="color: black;">mv&nbsp;/usr/bin/wget1&nbsp;/usr/bin/wget</span></span><span style="color: black;">mv /usr/bin/curl1 /usr/bin/curl</span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">5.4 恢复防火墙规则</strong></p><span style="color: black;"><span style="color: black;">iptables&nbsp;-I&nbsp;INPUT&nbsp;-p&nbsp;tcp&nbsp;--dport&nbsp;8012&nbsp;-j&nbsp;DROP&nbsp;</span></span><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I OUTPUT -p tcp --sport 8012 -j DROP </span></span><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I INPUT -p udp --dport 2051 -j DROP</span></span><span style="color: black;"><span style="color: black;">iptables</span> <span style="color: black;">-I OUTPUT -p udp --sport 2051 -j DROP</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">06</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">总结</span></p><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">按照</span>沙箱分析可知，在遇到WorkMiner挖矿木马，做应急时<span style="color: black;">咱们</span>需重点排查以下几点，<span style="color: black;">另一</span>此挖矿木马会对同网段内的其他主机进行ssh爆破来进行传播。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">6.1 开机<span style="color: black;">起步</span>文件</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">WorkMiner挖矿木马在/etc/rc.d/rc.local 文件中写入了开机自<span style="color: black;">起步</span>脚本，以实现持久化。</p><span style="color: black;">/<span style="color: black;">etc/rc.d/rc.local &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#该文件类似于Windows中的注册表，在系统<span style="color: black;">起步</span>的时候该文件下的脚本将被执行。</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">6.2 SSH存放公钥文件</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">WorkMiner挖矿木马/root/.ssh/authorized_keys中写入了公钥，以实现免密登录。</p><span style="color: black;">/root/.ssh/authorized_keys &nbsp;#authorized_keys 是linux 操作系统下，专门用来存放公钥的<span style="color: black;">地区</span>，只要公钥放到了服务器的正确位置，并且<span style="color: black;">持有</span>正确的权限，<span style="color: black;">就可</span>私钥，免密登录linux服务器。</span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">6.3 计划任务文件</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">WorkMiner挖矿木马在/var/spool/cron/root和/etc/crontab中分别写入了计划任务，以实现持久化。</p><span style="color: black;">/<span style="color: black;">var</span>/spool/cron/root <span style="color: black;">#计划任务:这个目录是以账号来区分<span style="color: black;">每一个</span>用户自己的执行计划 </span></span><span style="color: black;">/etc/crontab<span style="color: black;">#计划任务:系统执行计划，需要在五个*后面加上用户</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">6.4 /usr/目录</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">WorkMiner挖矿木马创建了/usr/.work 文件夹，以实现持久化。</p><span style="color: black;">/usr/ <span style="color: black;">#/usr/目录是linux系统核心所在，<span style="color: black;">包括</span>了所有的共享文件，涵盖了二进制文件，<span style="color: black;">各样</span>文档，<span style="color: black;">各样</span>头文件，还有<span style="color: black;">各样</span>库文件，还有<span style="color: black;">许多</span>程序等等</span></span><span style="color: black;">/usr/.work <span style="color: black;">#WorkMiner挖矿木马就在/usr/目录下创建了该<span style="color: black;">隐匿</span>文件夹，需重点排查。</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">6.5 防火墙开放端口</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">WorkMiner挖矿木马会修改防火墙规则分别开放TCP端口和UDP端口。</p><span style="color: black;"><span style="color: black;">iptabels</span> -nv -L <span style="color: black;">#<span style="color: black;">运用</span>该命令可查看<span style="color: black;">是不是</span>有额外的TCP和UDP端口开放</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">6.6 系统命令</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">WorkMiner挖矿木马会把wegt命令修改为wget1，curl命令修改为curl1。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">此处仅<span style="color: black;">做为</span>抛砖引玉，在排查该系统命令时<span style="color: black;">不可</span>仅局限于wget1和curl1，挖矿木马可能会将系统命令修改为任意字符，<span style="color: black;">乃至</span>是劫持系统命令，需要在排查时<span style="color: black;">重视</span>辨别。在扩展知识点中<span style="color: black;">亦</span>介绍了<span style="color: black;">怎样</span><span style="color: black;">运用</span>工具排查系统命令被劫持，可供<span style="color: black;">大众</span>参考。</p><span style="color: black;">/usr/bin&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: black;">#/usr/bin下存放<span style="color: black;">有些</span>用户的基本命令如wget,curl等</span></span><span style="color: black;">/usr/bin/wget <span style="color: black;">#查看wget命令<span style="color: black;">是不是</span>被修改为wget1，若被修改则可能是WorkMiner挖矿木马，仅<span style="color: black;">做为</span>参考<span style="color: black;">不可</span><span style="color: black;">做为</span><span style="color: black;">独一</span>依据。</span></span><span style="color: black;">/usr/bin/curl<span style="color: black;">#查看curl命令<span style="color: black;">是不是</span>被修改为curl1，若被修改则可能是WorkMiner挖矿木马，仅<span style="color: black;">做为</span>参考<span style="color: black;">不可</span><span style="color: black;">做为</span><span style="color: black;">独一</span>依据。</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">07</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">扩展知识点</strong></span></p><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">7.1、系统命令被劫持</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">7.1.1 AIDE入侵监测</strong></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">AIDE &nbsp;是一款入侵检测工具，<span style="color: black;">重点</span>用途是<span style="color: black;">检测</span>文档的完整性。<span style="color: black;">经过</span>构建一个基准的数据库，<span style="color: black;">保留</span>文档的<span style="color: black;">各样</span>属性，一旦系统被入侵，<span style="color: black;">能够</span><span style="color: black;">经过</span>对比基准数据库而获取文件变更记录。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、安装配置：</p><span style="color: black;"><span style="color: black;">#直接安装aide&nbsp;</span></span><span style="color: black;">yum <span style="color: black;">install</span> aide -y </span><span style="color: black;"><span style="color: black;">#生产初始化数据库 </span></span><span style="color: black;">sudo aide <span style="color: black;">--init </span></span><span style="color: black;"><span style="color: black;">#<span style="color: black;">按照</span>配置文件命名规则生成新的数据库文件，需要重命名，以便AIDE读取。 </span></span><span style="color: black;">sudo mv /<span style="color: black;">var</span>/lib/aide/aide.db.new.gz /<span style="color: black;">var</span>/lib/aide/aide.db.gz </span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、进行监测对比：</p><span style="color: black;"><span style="color: black;">sudo</span> aide --check </span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">经过</span>对比可快速<span style="color: black;">发掘</span><span style="color: black;">那些</span>系统命令被篡改。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">7.1.2 top命令被劫持</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">top命令被劫持<span style="color: black;">没法</span>正确<span style="color: black;">表示</span>出进程<span style="color: black;">关联</span>信息。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、busybox</p><span style="color: black;"><span style="color: black;">wget</span> <span style="color: black;">https://busybox.net/downloads/binaries/1.21.1/busybox-x86_64 --no-check-certificate</span></span><span style="color: black;"><span style="color: black;">chmod</span> <span style="color: black;">+x busybox-x86_64</span></span><span style="color: black;"><span style="color: black;">mv</span> <span style="color: black;">busybox-x86_64 /usr/local/bin/</span></span><span style="color: black;"><span style="color: black;">busybox</span> <span style="color: black;">top</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">若wget命令<span style="color: black;">亦</span><span style="color: black;">没法</span><span style="color: black;">运用</span><span style="color: black;">能够</span>先将busybox文件下载后上传。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、恢复top面板</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">恢复top面板的<span style="color: black;">过程</span>是将原top文件恢复。<span style="color: black;">此刻</span>，原top文件名为top.lanigiro，只要将<span style="color: black;">此刻</span>的top文件删除，再将top.lanigiro文件重命名为top<span style="color: black;">就可</span>。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">做好备份：</p><span style="color: black;"><span style="color: black;">cp</span> <span style="color: black;">top</span> <span style="color: black;">top</span><span style="color: black;">.bak</span></span><span style="color: black;"><span style="color: black;">cp</span> <span style="color: black;">top</span><span style="color: black;">.lanigiro</span><span style="color: black;">.bak</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">重命名：</p><span style="color: black;"><span style="color: black;">mv</span> <span style="color: black;">top</span> <span style="color: black;">top</span><span style="color: black;">.rm</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">若<span style="color: black;">没法</span>重命名可能是文件被加锁<span style="color: black;">运用</span>lsattr命令查看：</p><span style="color: black;"><span style="color: black;">lsattr</span> top</span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">运用</span>chattr命令解锁：</p><span style="color: black;"><span style="color: black;">chattr</span> <span style="color: black;">-i top</span></span><span style="color: black;"><span style="color: black;">chattr</span> <span style="color: black;">top.lanigiro</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">若chattr命令被删除<span style="color: black;">能够</span>重新安装。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、先查看chattr命令，即查看e2fsprogs包。</p><span style="color: black;"><span style="color: black;">rpm</span> -qa|grep e2fsprogs <span style="color: black;">#查看e2fsprogs包<span style="color: black;">是不是</span>存在（可能会<span style="color: black;">表示</span>存在，但还是依旧<span style="color: black;">没法</span><span style="color: black;">运用</span>chattr命令）</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、下载chattr命令</p><span style="color: black;"><span style="color: black;">yum</span> install e2fsprogs <span style="color: black;">#可能会<span style="color: black;">表示</span>e2fsprogs<span style="color: black;">已然</span>被安装了，<span style="color: black;">然则</span>依旧<span style="color: black;">没法</span><span style="color: black;">运用</span>chattr命令</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">3、安装</p><span style="color: black;"><span style="color: black;">yum</span> <span style="color: black;">install</span> <span style="color: black;">e2fsprogs-1</span><span style="color: black;">.42</span><span style="color: black;">.9-19</span><span style="color: black;">.el7</span><span style="color: black;">.x86_64</span> （若还是<span style="color: black;">没法</span><span style="color: black;">运用</span>，可<span style="color: black;">运用</span>上一步<span style="color: black;">查找</span>到的<span style="color: black;">详细</span>的<span style="color: black;">e2fsprogs</span>包名安装<span style="color: black;">就可</span>）</span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">#<span style="color: black;">上下</span>滑动查看<span style="color: black;">更加多</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">恢复成功后删除刚才的备份文件：</p><span style="color: black;"><span style="color: black;">mv</span> <span style="color: black;">top</span> <span style="color: black;">top</span><span style="color: black;">.rm</span></span><span style="color: black;"><span style="color: black;">mv</span> <span style="color: black;">top</span><span style="color: black;">.lanigiro</span> <span style="color: black;">top</span></span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">08</strong></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">防护<span style="color: black;">意见</span></strong></span></p><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;">
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、<span style="color: black;">定时</span><span style="color: black;">检测</span>系统SSH服务的<span style="color: black;">秘码</span>，设置高强度<span style="color: black;">秘码</span>避免被暴力破解，并<span style="color: black;">定时</span>修改<span style="color: black;">秘码</span>。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、修改SSH服务22端口为非默认端口以降低被攻击的可能性。</p><span style="color: black;"><strong style="color: blue;"><span style="color: black;">— &nbsp;往期回顾 &nbsp;—</span></strong></span><strong style="color: blue;"><a style="color: black;"><span style="color: black;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"></span></a></strong><a style="color: black;"><span style="color: black;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"></span></a><a style="color: black;"><span style="color: black;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"></span></a><a style="color: black;"><span style="color: black;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"></span></a><a style="color: black;"><span style="color: black;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"></span></a><strong style="color: blue;"><span style="color: black;">关于安恒信息安全服务团队</span></strong><strong style="color: blue;"><span style="color: black;">安恒信息安全服务团队由九维安全能力专家<span style="color: black;">形成</span>，其职责分别为：红队<span style="color: black;">连续</span>突破、橙队擅于赋能、黄队致力建设、绿队跟踪改进、青队快速处置、蓝队实时防御，紫队<span style="color: black;">持续</span>优化、暗队专注情报和<span style="color: black;">科研</span>、白队运营管理，以体系化的安全人才及技术为客户赋能。</span></strong><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;">




星☆雨 发表于 2024-8-23 13:13:26

外链发布论坛学习网络优化SEO。

wrjc1hod 发表于 2024-10-5 18:57:04

谷歌网站排名优化 http://www.fok120.com/

wrjc1hod 发表于 2024-11-9 11:25:40

你说得对，我们一起加油，未来可期。
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