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Linux.Siggen.6501

Added to the Dr.Web virus database: 2024-01-29

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/profile.d/bash_cfg.sh
  • /etc/crontab
  • /etc/init.d/apparmor
  • /etc/init.d/cron
  • /etc/init.d/dbus
  • /etc/init.d/hwclock.sh
  • /etc/init.d/kmod
  • /etc/init.d/networking
  • /etc/init.d/procps
  • /etc/init.d/rsyslog
  • /etc/init.d/ssh
  • /etc/init.d/sudo
  • /etc/init.d/udev
  • /etc/profile.d/gateway.sh
Malicious functions:
Launches itself as a daemon
Manages services:
  • ['systemctl', 'list-unit-files', '--full', '--type=socket']
  • ['systemctl', 'start', 'crond.service']
  • ['systemctl', 'daemon-reload']
  • ['systemctl', 'enable', 'quotaoff.service']
  • ['systemctl', 'start', 'quotaoff.service']
Launches processes:
  • basename /usr/sbin/service
  • <SAMPLE_FULL_PATH> \x0a
  • /bin/sh /usr/sbin/service cron start
  • renice -20 419
  • mount -o bind /tmp/ /proc/419
  • /bin/bash -c cd /boot;ausearch -c \x27System.mod\x27 --raw | audit2allow -M my-Systemmod;semodule -X 300 -i my-Systemmod.pp
  • /bin/bash -c cd /boot;systemctl daemon-reload;systemctl enable quotaoff.service;systemctl start quotaoff.service;journalctl -xe --no-pager
  • journalctl -xe --no-pager
  • /bin/bash -c /etc/32675&
  • /bin/bash -c echo \x22*/1 * * * * root /.mod \x22 >> /etc/crontab
  • /bin/sh /usr/sbin/service crond start
  • sed -ne s/\x5c.socket\x5cs*[a-z]*\x5cs*$/.socket/p
Performs operations with the file system:
Modifies file access rights:
  • /etc/opt.services.cfg
  • /etc/32675
  • /boot/System.mod
  • /etc/profile.d/bash_cfg
  • /usr/lib/libgdi.so.0.8.1
  • /usr/lib/system-mark
  • /usr/bin/include/ps
  • /usr/bin/include/ss
  • /usr/bin/include/ls
  • /usr/bin/include/dir
  • /usr/bin/include/find
  • /usr/bin/include/lsof
  • /usr/bin/ps
  • /usr/bin/ss
  • /usr/bin/ls
  • /usr/bin/dir
  • /usr/bin/find
  • /usr/bin/lsof
Creates folders:
  • /usr/bin/include
Creates or modifies files:
  • /etc/.walk
  • /etc/32675
  • /usr/lib/systemd/system/quotaoff.service
  • /.mod
Deletes files:
  • /etc/.ares
Locks files:
  • /dev/.walk.lod
  • /dev/.img
Mounts file systems:
  • /tmp
Changes time of creation/access/modification of files:
  • /etc/opt.services.cfg
  • /boot/System.mod
  • /etc/profile.d/bash_cfg
  • /usr/lib/libgdi.so.0.8.1
  • /lib/system-mark
  • /etc/init.d/apparmor
  • /etc/init.d/cron
  • /etc/init.d/dbus
  • /etc/init.d/hwclock.sh
  • /etc/init.d/kmod
  • /etc/init.d/networking
  • /etc/init.d/procps
  • /etc/init.d/rsyslog
  • /etc/init.d/ssh
  • /etc/init.d/sudo
  • /etc/init.d/udev
  • <SAMPLE_FULL_PATH>
  • /usr/bin/include/ps
  • /usr/bin/include/ss
  • /usr/bin/include/ls
  • /usr/bin/include/dir
  • /usr/bin/include/find
  • /usr/bin/include/lsof
  • /usr/bin/ps
  • /usr/bin/ss
  • /usr/bin/ls
  • /usr/bin/dir
  • /usr/bin/find
  • /usr/bin/lsof

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