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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
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