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Linux.Siggen.3144

Added to the Dr.Web virus database: 2020-06-19

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/inittab
  • /var/spool/cron/crontabs/root
Malicious functions:
Substitutes application name for:
  • w7tbbnuafcpbv25antd1cn22
Launches processes:
  • sh -c cat /etc/inittab | grep -v \"<SAMPLE_FULL_PATH>\" > /etc/inittab2
  • sh -c crontab -l | grep <SAMPLE_FULL_PATH> | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * <SAMPLE_FULL_PATH> > /dev/null 2>&1 &\") | crontab - > /dev/null 2>&1 &
  • sh -c crontab -r
  • grep -v no cron
  • grep <SAMPLE_FULL_PATH>
  • crontab -l
  • cat /etc/inittab
  • crontab -r
  • grep -v <SAMPLE_FULL_PATH>
  • sh -c echo \"0:2345:respawn:<SAMPLE_FULL_PATH>\" >> /etc/inittab2
  • sh -c cat /etc/inittab2 > /etc/inittab
  • crontab -
  • cat /etc/inittab2
  • sh -c rm -rf /etc/inittab2
  • rm -rf /etc/inittab2
Performs operations with the file system:
Modifies file access rights:
  • /var/spool/cron/crontabs/tmp.xIO2hY
Creates or modifies files:
  • /etc/inittab2
  • /var/spool/cron/crontabs/tmp.xIO2hY
Deletes files:
  • /etc/inittab2
Locks files:
  • /tmp/.bawtz
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:59000

Curing recommendations


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