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Linux.Siggen.6325

Added to the Dr.Web virus database: 2023-12-31

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/rc.local
  • /etc/init.d/linux_kill
  • /etc/init.d/.depend.boot
  • /etc/init.d/.depend.start
  • /etc/init.d/.depend.stop
  • /etc/profile.d/bash_config.sh
  • /etc/profile.d/bash_config
  • /etc/crontab
  • /etc/init.d/ssh
  • /etc/profile.d/linux.sh
Malicious functions:
Substitutes application name for:
  • ksoftirqd/0
Replaces the following system files:
  • /usr/bin/lsof
Manages services:
  • ['systemctl', 'list-unit-files', '--full', '--type=socket']
  • ['systemctl', '-p', 'Triggers', 'show', 'dbus.socket']
  • ['systemctl', '-p', 'Triggers', 'show', 'ssh.socket']
  • ['systemctl', '-p', 'Triggers', 'show', 'syslog.socket']
  • ['systemctl', '-p', 'Triggers', 'show', 'systemd-initctl.socket']
  • ['systemctl', '-p', 'Triggers', 'show', 'systemd-journald-dev-log.socket']
  • ['systemctl', '-p', 'Triggers', 'show', 'systemd-journald.socket']
  • ['systemctl', '-p', 'Triggers', 'show', 'systemd-shutdownd.socket']
  • ['systemctl', 'daemon-reload']
  • ['systemctl', '-p', 'Triggers', 'show', 'systemd-udevd-control.socket']
  • ['systemctl', '-p', 'Triggers', 'show', 'systemd-udevd-kernel.socket']
  • ['systemctl', 'start', 'cron.service']
  • ['systemctl', 'start', 'crond.service']
Launches processes:
  • bash -c echo \x22*/1 * * * * root /.img \x22 >> /etc/crontab
  • basename /usr/sbin/service
  • /usr/bin/perl /usr/sbin/update-rc.d linux_kill defaults
  • mount -o bind /tmp/ /proc/823
  • /bin/sh /etc/32678
  • sleep 60
  • /sbin/insserv linux_kill
  • /bin/sh /usr/sbin/service crond start
  • renice -20 823
  • <SAMPLE_FULL_PATH> \x0a
  • /bin/sh /usr/sbin/service cron start
  • sed -ne s/\x5c.socket\x5cs*[a-z]*\x5cs*$/.socket/p
Kills the following processes:
  • tmux
Performs operations with the file system:
Modifies file access rights:
  • /etc/id.services.conf
  • /etc/32678
  • /etc/rc.local
  • /usr/sbin/ifconfig.conf
  • /boot/System.img.config
  • /etc/profile.d/bash_config
  • /usr/lib/libdlrpcld.so
  • /lib/system-monitor
  • /usr/bin/find
  • /usr/bin/lsof
Creates folders:
  • /usr/bin/lib
Creates or modifies files:
  • /etc/id.services.conf
  • /etc/32678
  • /dev/.old
  • /dev/.img
  • /dev/watchdog
  • /dev/misc/watchdog
  • /usr/sbin/ifconfig.conf
  • /boot/System.img.config
  • /usr/lib/libdlrpcld.so
  • /.img
  • /lib/system-monitor
  • /usr/bin/find
  • /usr/bin/lsof
  • /run/mount/utab
Locks files:
  • /dev/.img
Mounts file systems:
  • /tmp
Changes time of creation/access/modification of files:
  • /etc/id.services.conf
  • /etc/rc.local
  • /usr/sbin/ifconfig.conf
  • /boot/System.img.config
  • /etc/profile.d/bash_config
  • /usr/lib/libdlrpcld.so
  • /lib/system-monitor
  • /etc/init.d/ssh
  • <SAMPLE_FULL_PATH>
  • /usr/bin/find
  • /usr/bin/lsof
Network activity:
Establishes connection:
  • <LOCAL_DNS_SERVER>
  • 8.#.8.8:53
DNS ASK:
  • ww#.#oogle.com
  • my###duobao.xyz
  • my###nlibao.xyz
Other:
Collects RAM information

Curing recommendations


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