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Linux.Siggen.7833

Added to the Dr.Web virus database: 2024-07-24

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /var/spool/cron/crontabs/root
Malicious functions:
Launches itself as a daemon
Substitutes application name for:
  • aeeghpac7gqvtujaktig44tc
Launches processes:
  • crontab -l
  • grep -v no cron
  • grep -v /sh5
  • grep -v /init5
  • grep -v /<SAMPLE_FULL_PATH>
  • crontab /var/run/.hh21804289383
  • /bin/uname -n
  • grep -v /bash5
  • (crontab -l | grep -v \x22/<SAMPLE_FULL_PATH>\x22 | grep -v \x22/sh5\x22 | grep -v \x22/init5\x22 | grep -v \x22/bash5\x22 | grep -v \x22no cron\x22 > /var/run/.hh21804289383) > /dev/null 2>&1
Performs operations with the file system:
Modifies file access rights:
  • /root/init5
  • /var/tmp/sh5
  • /run/init5
  • /run/lock/init5
  • /dev/shm/sh5
  • /tmp/bash5
  • /var/spool/cron/crontabs/tmp.1njp4G
Creates or modifies files:
  • /run/.hh21804289383
  • /root/init5
  • /var/tmp/sh5
  • /run/init5
  • /run/lock/init5
  • /dev/shm/sh5
  • /tmp/bash5
  • /var/spool/cron/crontabs/tmp.1njp4G
Deletes files:
  • /.hh21804289383
Changes time of creation/access/modification of files:
  • /var/spool/cron/crontabs
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:47302
Establishes connection:
  • 5.###.84.159:8080
  • 8.#.8.8:53
DNS ASK:
  • du##.giraffe.su

Curing recommendations


Linux

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