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Linux.Siggen.4326

Added to the Dr.Web virus database: 2022-01-12

Virus description added:

Technical Information

Malicious functions:
Removes itself
Gets access to SSH keys
  • /root/.ssh/authorized_keys
Launches processes:
  • uname -a
  • cat /proc/cpuinfo
  • cat /etc/issue
  • free -h
  • uptime
  • journalctl -S @0 -u sshd
  • cat /var/log/auth*
  • zcat /var/log/auth*
  • gzip -cd /var/log/auth*
Performs operations with the file system:
Creates folders:
  • /root/.ssh
Deletes files:
  • /dev/shm/<SAMPLE_FULL_PATH>
  • /tmp/<SAMPLE_FULL_PATH>
  • /var/tmp/<SAMPLE_FULL_PATH>
  • /root/<SAMPLE_FULL_PATH>
  • /etc/<SAMPLE_FULL_PATH>
Network activity:
Establishes connection:
  • 127.0.0.1:9
  • [:#1]:9
  • [:##]:1234
  • 127.0.0.1:1234
  • [:##]:22
Sends data to the following servers:
  • 0.0.0.0:22
Receives data from the following servers:
  • 0.0.0.0:22
Other:
Collects OS information
Collects CPU information
Collects RAM information
Collects information about network activity

Curing recommendations


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