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Linux.Siggen.3400

Added to the Dr.Web virus database: 2020-11-15

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /var/spool/cron/crontabs/root
Malicious functions:
Removes itself
Gets access to SSH keys
  • /root/.ssh/java/bin/Jserv
Substitutes application name for:
  • softd/2
Launches processes:
  • sh -c ( crontab -l | grep -v -F \"/root/.ssh/java/bin/Jserv\" ; echo \"0 8 * * * ('/root/.ssh/java/bin/Jserv' &) >/dev/null 2>&1 \" ) | crontab - >/dev/null 2>&1
  • crontab -
  • crontab -l
  • grep -v -F /root/.ssh/java/bin/Jserv
  • /root/.ssh/java/bin/Jserv
Performs operations with the file system:
Modifies file access rights:
  • /root/.ssh/java/bin/Jserv
  • /var/spool/cron/crontabs/tmp.DY7stH
Creates folders:
  • /root/.ssh
  • /root/.ssh/java
  • /root/.ssh/java/bin
Creates or modifies files:
  • /var/spool/cron/crontabs/tmp.DY7stH
  • /tmp/.edv
Network activity:
Establishes connection:
  • <LOCAL_DNS_SERVER>
  • 13#.##2.58.101:443
DNS ASK:
  • za#####saservice.com

Curing recommendations


Linux

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