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Linux.Siggen.4265

Added to the Dr.Web virus database: 2021-11-11

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/init.d/.chinaz{1636573899
  • /etc/cron.hourly/cron.sh
  • /etc/crontab
Creates or modifies the following symlinks:
  • /etc/rc1.d/S90.chinaz{1636573899
  • /etc/rc2.d/S90.chinaz{1636573899
  • /etc/rc3.d/S90.chinaz{1636573899
  • /etc/rc4.d/S90.chinaz{1636573899
  • /etc/rc5.d/S90.chinaz{1636573899
  • /etc/rc0.d/K02urandom
  • /etc/rc2.d/S01.chinaz{1636573899
  • /etc/rc2.d/S05rc.local
  • /etc/rc2.d/S05rmnologin
Malicious functions:
Removes itself
Launches itself as a daemon
Modifies firewall settings:
  • iptables --flush
  • iptables -A OUTPUT -p tcp --dport 0 -j DROP
Manages services:
  • update-rc.d <SAMPLE> remove
  • update-rc.d .chinaz{1636573899 defaults
  • systemctl daemon-reload
Launches processes:
  • chkconfig --del <SAMPLE>
  • chkconfig --add .chinaz{1636573899
  • /bin/sh ##-c #
  • sed -i /\/etc\/cron.hourly\/cron.sh/d /etc/crontab
  • rm -rf /etc/resolv.conf
  • /sbin/insserv .chinaz{1636573899
  • /sbin/insserv
  • whoami
  • /bin/sh ##-c touch /home/root/ConfigDatecz
  • touch /home/root/ConfigDatecz
  • /bin/sh ##-c iptables -A OUTPUT -p tcp --dport 0 -j DROP
Performs operations with the file system:
Modifies file access rights:
  • /etc/sedvdkALj
Creates or modifies files:
  • /tmp/.chinaz{1636573899
  • /etc/sedvdkALj
  • /home/root/ConfigDatecz
  • /usr/share/perl/5.20.2/strict.pm
Deletes files:
  • /etc/init.d/<SAMPLE>
  • /etc/rc1.d/S90<SAMPLE>
  • /etc/rc2.d/S90<SAMPLE>
  • /etc/rc3.d/S90<SAMPLE>
  • /etc/rc4.d/S90<SAMPLE>
  • /etc/rc5.d/S90<SAMPLE>
  • /etc/rc1.d/S90.chinaz{1636573899
  • /etc/rc2.d/S90.chinaz{1636573899
  • /etc/rc3.d/S90.chinaz{1636573899
  • /etc/rc4.d/S90.chinaz{1636573899
  • /etc/rc5.d/S90.chinaz{1636573899
  • /etc/rc.d/rc1.d/S90.chinaz{1636573899
  • /etc/rc.d/rc2.d/S90.chinaz{1636573899
  • /etc/rc.d/rc3.d/S90.chinaz{1636573899
  • /etc/rc.d/rc4.d/S90.chinaz{1636573899
  • /etc/rc.d/rc5.d/S90.chinaz{1636573899
  • /etc/resolv.conf
  • /etc/rc0.d/K01urandom
  • /etc/rc0.d/S90.chinaz{1636573899
  • /etc/rc0.d/S04rc.local
  • /etc/rc0.d/S04rmnologin
Network activity:
Establishes connection:
  • 127.0.0.1:53
  • 0.0.0.0:2553
  • 8.#.8.8:53
DNS ASK:
  • ji###.monster
Sends data to the following servers:
  • 0.0.0.0:0
  • 127.0.0.1:2553
Other:
Collects CPU information
Collects RAM information

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