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Linux.Siggen.392

Added to the Dr.Web virus database: 2018-01-24

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/inittab
Malicious functions:
Launches processes:
  • sh -c cat /etc/inittab | grep -v \"<SAMPLE_FULL_PATH>\" > /etc/inittab2
  • sh -c crontab -l | grep <SAMPLE_FULL_PATH> || (crontab -l ; echo \"*/5 * * * * <SAMPLE_FULL_PATH> > /dev/null 2>&1 &\") | crontab - > /dev/null 2>&1 &
  • cat /etc/inittab
  • grep -v <SAMPLE_FULL_PATH>
  • crontab -l
  • grep <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.sJpfnk
Creates or modifies files:
  • /etc/inittab2
  • /var/spool/cron/crontabs/tmp.sJpfnk
Deletes files:
  • /etc/inittab2"
Locks files:
  • /tmp/.ubntmuh
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:61000

Curing recommendations


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