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Linux.Siggen.6485

Added to the Dr.Web virus database: 2024-01-24

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /var/spool/cron/crontabs/root
  • /etc/init.d/mushi_1697006310
  • /etc/rc.d/mushi_1697006311
Malicious functions:
Launches itself as a daemon
Manages services:
  • ['systemctl', 'daemon-reload']
  • ['systemctl', 'enable', '/etc/systemd/system/mushi1697006311.service']
Launches processes:
  • crontab -l
  • cp \x27<SAMPLE_FULL_PATH>\x27 \x27/usr/bin/4752558e\x27
  • (crontab -l 2>/dev/null; echo \x22@reboot /usr/bin/4752558e\x22) | crontab -
  • chmod +x \x27/etc/init.d/mushi_1697006310\x27 && update-rc.d \x27/etc/init.d/mushi_1697006310\x27 defaults
  • cp <SAMPLE_FULL_PATH> /usr/bin/4752558e
  • chmod +x /etc/init.d/mushi_1697006310
  • /usr/bin/perl /usr/sbin/update-rc.d /etc/init.d/mushi_1697006310 defaults
  • systemctl daemon-reload && systemctl enable /etc/systemd/system/mushi1697006311.service
  • crontab -
Kills the following processes:
  • <SAMPLE>
Performs operations with the file system:
Modifies file access rights:
  • /var/spool/cron/crontabs/tmp.yrp5Or
  • /etc/init.d/mushi_1697006310
Creates or modifies files:
  • /usr/bin/4752558e
  • /dev/full
  • /var/spool/cron/crontabs/tmp.yrp5Or
  • /usr/share/perl/5.28.1/warnings.pm
  • /etc/systemd/system/mushi1697006311.service
Changes time of creation/access/modification of files:
  • /var/spool/cron/crontabs
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:45832
Establishes connection:
  • 127.0.0.1:45832
  • 1.#.1.1:53
  • 18#.###.128.11:51515
DNS ASK:
  • wq.gy
Sends data to the following servers:
  • 18#.###.128.11:51515
Receives data from the following servers:
  • 18#.###.128.11:51515

Curing recommendations


Linux

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