一.背景
最近公司一台虚拟机被攻击，其中一种挖矿病毒、会伪CPU数、即如果用top命令只能看到一个cpu、并且负载不高、实际上整个负载300%以上,及时定时任务关掉也不起作用。
二.言归正传开始干掉这个麻烦的病毒（脚本如下）:
- #关掉定时任务
- service crond stop
- #删除so库
- busybox rm -f /etc/ld.so.preload
- busybox rm -f /usr/local/lib/libcset.so
- chattr -i /etc/ld.so.preload
- busybox rm -f /etc/ld.so.preload
- busybox rm -f /usr/local/lib/libcset.so
- # 清理异常进程
- busybox ps -ef | busybox grep -v grep | busybox egrep 'ksoftirqds' | busybox awk '{print $1}' | busybox xargs kill -9
- busybox ps -ef | busybox grep -v grep | busybox egrep 'kthrotlds' | busybox awk '{print $1}' | busybox xargs kill -9
- busybox ps -ef | busybox grep -v grep | busybox egrep 'kpsmouseds' | busybox awk '{print $1}' | busybox xargs kill -9
- busybox ps -ef | busybox grep -v grep | busybox egrep 'kintegrityds' | busybox awk '{print $1}' | busybox xargs kill -9
- busybox ps -ef | busybox grep -v grep | busybox egrep 'khugepageds' | busybox awk '{print $1}' | busybox xargs kill -9
- busybox rm -f /tmp/kthrotlds
- busybox rm -f /tmp/kintegrityds
- busybox rm -f /tmp/khugepageds
- busybox rm -f /tmp/kpsmouseds
- busybox rm -f /etc/cron.d/tomcat
- busybox rm -f /etc/cron.d/root
- busybox rm -f /var/spool/cron/root
- busybox rm -f /var/spool/cron/crontabs/root
- busybox rm -f /etc/rc.d/init.d/kthrotlds
- busybox rm -f /etc/rc.d/init.d/kpsmouseds
- busybox rm -f /etc/rc.d/init.d/kintegrityds
- busybox rm -f /usr/sbin/kthrotlds
- busybox rm -f /usr/sbin/kintegrityds
- busybox rm -f /usr/sbin/kpsmouseds
- busybox rm -f /etc/init.d/netdns
- busybox rm -f /tmp/ld.so.preload*
- ldconfig
- # 再次清理异常进程
- busybox ps -ef | busybox grep -v grep | busybox egrep 'ksoftirqds' | busybox awk '{print $1}' | busybox xargs kill -9
- busybox ps -ef | busybox grep -v grep | busybox egrep 'kthrotlds' | busybox awk '{print $1}' | busybox xargs kill -9
- busybox ps -ef | busybox grep -v grep | busybox egrep 'kpsmouseds' | busybox awk '{print $1}' | busybox xargs kill -9
- busybox ps -ef | busybox grep -v grep | busybox egrep 'kintegrityds' | busybox awk '{print $1}' | busybox xargs kill -9
- busybox ps -ef | busybox grep -v grep | busybox egrep 'khugepageds' | busybox awk '{print $1}' | busybox xargs kill -9
# 清理开机启动项
chkconfig netdns off
chkconfig –del netdns
service crond start
echo "Done, Please reboot!"
补充：由于近期很多人咨询有wiki，redis,jenkins中招的情况，建议尽快备份数据，重装系统，默认端口修改复杂端口，服务仅供内部使用。