Linux.Siggen.3867
Added to the Dr.Web virus database:
2021-05-01
Virus description added:
2021-05-01
Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- /etc/init.d/sysetmd792d80b2
- /etc/init.d/.depend.boot
- /etc/init.d/.depend.start
- /etc/init.d/.depend.stop
- /etc/cron.hourly/cron.sh
- /etc/crontab
Creates or modifies the following symlinks:
- /etc/rc1.d/S90sysetmd792d80b2
- /etc/rc2.d/S90sysetmd792d80b2
- /etc/rc3.d/S90sysetmd792d80b2
- /etc/rc4.d/S90sysetmd792d80b2
- /etc/rc5.d/S90sysetmd792d80b2
- /etc/rc1.d/S01sysetmd792d80b2
- /etc/rc2.d/S01sysetmd792d80b2
- /etc/rc3.d/S01sysetmd792d80b2
- /etc/rc4.d/S01sysetmd792d80b2
- /etc/rc5.d/S01sysetmd792d80b2
Malicious functions:
Launches itself as a daemon
Manages services:
- update-rc.d sysetmd792d80b2 defaults
- systemctl daemon-reload
Launches processes:
- sh -c chattr -i /bin/sysetmd792d80b2
- chattr -i /bin/sysetmd792d80b2
- sh -c chattr +i /bin/sysetmd792d80b2
- chattr +i /bin/sysetmd792d80b2
- sh -c chkconfig --add sysetmd792d80b2
- sh -c update-rc.d sysetmd792d80b2 defaults
- /sbin/insserv sysetmd792d80b2
- sh -c sed -i '/\/etc\/cron.hourly\/cron.sh/d' /etc/crontab ; echo '*/3 * * * * root /etc/cron.hourly/cron.sh' >> /etc/crontab
- sed -i /\/etc\/cron.hourly\/cron.sh/d /etc/crontab
- sh -c sed -i '/\/bin\/sysetmd792d80b2/d' /root/.profile; echo '/bin/sysetmd792d80b2 d > /dev/null 2>&1' >> /root/.profile
- sed -i /\/bin\/sysetmd792d80b2/d /root/.profile
- sh -c sed -i '/\/bin\/sysetmd792d80b2/d' /root/.bashrc; echo '/bin/sysetmd792d80b2 d > /dev/null 2>&1' >> /root/.bashrc
- sed -i /\/bin\/sysetmd792d80b2/d /root/.bashrc
- /bin/sysetmd792d80b2
- sh -c sed -i '/\/etc\/cron.hourly\/cron.sh/d' /etc/crontab
- sh -c sed -i '/\/bin\/sysetmd792d80b2/d' /root/.profile
- sh -c sed -i '/\/bin\/sysetmd792d80b2/d' /root/.bashrc
Performs operations with the file system:
Modifies file access rights:
- /tmp/.systemd
- /tmp/.systemd/792d80b2
- /bin/sysetmd792d80b2
- /etc/sedxEXwD9
- /root/sedeswRjm
- /root/sed5XtEez
- /etc/sedORBR2g
- /root/sed9e5PHF
- /root/sedysBYm8
- /etc/sedI1m1vX
- /root/sednqRN1j
- /root/sedEOuQVx
Creates folders:
- /tmp/.systemd
- /tmp/.systemd/792d80b2
Creates or modifies files:
- /bin/sysetmd792d80b2
- /etc/sedxEXwD9
- /root/sedeswRjm
- /root/.profile
- /root/sed5XtEez
- /root/.bashrc
- /tmp/.systemd/792d80b2/systemd.lockroot
- <SAMPLE_FULL_PATH>tmp
- /etc/sedORBR2g
- /root/sed9e5PHF
- /root/sedysBYm8
- /etc/sedI1m1vX
- /root/sednqRN1j
- /root/sedEOuQVx
Deletes files:
- /bin/sysetmd792d80b2
- /etc/rc1.d/S90sysetmd792d80b2
- /etc/rc2.d/S90sysetmd792d80b2
- /etc/rc3.d/S90sysetmd792d80b2
- /etc/rc4.d/S90sysetmd792d80b2
- /etc/rc5.d/S90sysetmd792d80b2
- /etc/rc.d/rc1.d/S90sysetmd792d80b2
- /etc/rc.d/rc2.d/S90sysetmd792d80b2
- /etc/rc.d/rc3.d/S90sysetmd792d80b2
- /etc/rc.d/rc4.d/S90sysetmd792d80b2
- /etc/rc.d/rc5.d/S90sysetmd792d80b2
- /etc/cron.hourly/cron.sh
Locks files:
- /tmp/.systemd/792d80b2/systemd.lockroot
Curing recommendations
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