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Linux.Siggen.7788

Added to the Dr.Web virus database: 2024-07-12

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/init.d/dpkg-deb-package
  • /etc/cron.d/dbus-manager
  • /etc/cron.hourly/dbus-manager
  • /etc/cron.daily/dbus-manager
  • /etc/cron.weekly/dbus-manager
  • /etc/cron.monthly/dbus-manager
  • /var/spool/cron/crontabs/root
Malicious functions:
Launches itself as a daemon
Launches processes:
  • bash -c echo \x22*/2 * * * * nohup /run/user/0/6a954ee5-5528-4193-9e69-8978fd2693a2 >/dev/null 2>&1 &\x22 | crontab -
  • ps -A -ostat,ppid
  • /usr/bin/mawk awk {print $1}
  • ps aux
  • chattr -ia /etc/cron.weekly/.placeholder
  • /tmp/592f1dcd-d7e9-4242-be46-1a4b1befa18f kworker/R-debug
  • head -n 1
  • bash -c find /run/user/0 -type f -regextype egrep -regex \x27.*[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}\x27 -exec rm -rf {} +
  • whoami
  • grep /etc/cron
  • grep -v /usr/sbin/httpd
  • find /run/user/0 -type f -regextype egrep -regex .*[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12} -exec rm -rf {} +
  • chattr -ia /etc/cron.daily/logrotate
  • hostname -I
  • ps -A -ostat,ppid 2>/dev/null | awk \x27/[zZ]/ && !a[$2]++ {print $2}\x27 2>/dev/null | while read procid; do kill -9 $procid 2>/dev/null; done;if `id -u 2>/dev/null` -eq \x270\x27 ; then ps x 2>/dev/null | grep /etc/cron 2>/dev/null | grep -v grep 2>/dev/null | while read procid; do kill -9 $procid 2>/dev/null; done fi
  • grep -v grep
  • chattr -ia /etc/cron.daily/dpkg
  • cat /etc/ssh/sshd_config
  • crontab -
  • sed -e s/$//
  • /tmp/-python37-88bf08d7-81c8-4ada-a240-b8e6f9cf8add /tmp/-python37-88bf08d7-81c8-4ada-a240-b8e6f9cf8add
  • chattr -ia /etc/cron.weekly/man-db
  • chattr -ia /etc/cron.d/e2scrub_all
  • chattr -ia /etc/cron.daily/apt-compat
  • /usr/bin/mawk awk {print \x22-\x22$2}
  • <0x1b2>
  • grep -v -- -bash[[:space:]]*$
  • grep -- -bash[[:space:]]*$
  • cut -d: -f2
  • <0x1a>
  • <0xf5>
  • id -u
  • grep -c ^processor /proc/cpuinfo
  • hostname
  • chattr -ia /etc/cron.monthly/.placeholder
  • chattr -ia /etc/cron.hourly/.placeholder
  • /tmp/-bash-88bf08d7-81c8-4ada-a240-b8e6f9cf8add /tmp/-bash-88bf08d7-81c8-4ada-a240-b8e6f9cf8add -c -p 80 -p 8080 -p 443 -tls -dp 80 -dp 8080 -dp 443 -tls -d
  • grep -m 1 model name /proc/cpuinfo
  • chattr -ia /etc/cron.daily/.placeholder
  • grep Port
  • chattr -ia /var/spool/cron/crontabs
  • wc -l
  • /usr/bin/mawk awk {if($3>30.0) print $2}
  • ps x
  • chattr -ia /etc/cron.daily/man-db
  • /usr/bin/mawk awk /[zZ]/ && !a[$2]++ {print $2}
  • chattr -ia /etc/cron.d/.placeholder
  • sed -e s/^ *//
Kills the following processes:
  • 6a954ee5-5528-4
  • ps
Performs operations with the file system:
Modifies file access rights:
  • /tmp/592f1dcd-d7e9-4242-be46-1a4b1befa18f
  • /etc/init.d/dpkg-deb-package
  • /usr/bin/dpkg-debian
  • /var/spool/cron/crontabs/tmp.nyoEZB
Modifies file owner:
  • /var/spool/cron/crontabs
Creates folders:
  • /var/spool/cron/crontabs
Deletes folders:
  • /var/spool/cron/crontabs
Creates or modifies files:
  • /tmp/592f1dcd-d7e9-4242-be46-1a4b1befa18f
  • /tmp/fd7a9cc2-4fdd-4b3f-8855-5df83ddef75e
  • /etc/systemd/system/dpkg-deb-package.service
  • /usr/bin/dpkg-debian
  • /tmp/-bash-88bf08d7-81c8-4ada-a240-b8e6f9cf8add
  • /var/spool/cron/dbus-manager
  • /run/user/0/6a954ee5-5528-4193-9e69-8978fd2693a2
  • /var/spool/cron/crontabs/tmp.nyoEZB
  • /tmp/.lock
  • /tmp/-python37-88bf08d7-81c8-4ada-a240-b8e6f9cf8add
  • /tmp/.bashirc
Deletes files:
  • /etc/cron.d/.placeholder
  • /etc/cron.d/e2scrub_all
  • /var/spool/cron/crontabs
  • /etc/cron.hourly/.placeholder
  • /etc/cron.daily/.placeholder
  • /etc/cron.daily/apt-compat
  • /etc/cron.daily/dpkg
  • /etc/cron.daily/logrotate
  • /etc/cron.daily/man-db
  • /etc/cron.weekly/.placeholder
  • /etc/cron.weekly/man-db
  • /etc/cron.monthly/.placeholder
  • /tmp/-bash-88bf08d7-81c8-4ada-a240-b8e6f9cf8add
  • /tmp/-python37-88bf08d7-81c8-4ada-a240-b8e6f9cf8add
Locks files:
  • /tmp/.lock
  • /tmp/.bashirc
Changes time of creation/access/modification of files:
  • /var/spool/cron/crontabs
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:10444
Establishes connection:
  • 16#.##.162.175:80
  • 80.##.24.30:80
DNS ASK:
  • ru#.##-demand.pw
  • c4####cd.pwndns.pw
Sends data to the following servers:
  • 16#.##.162.175:80
Other:
Collects OS information
Collects CPU information
Collects RAM information
Collects information about network activity

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