Felismus

MITRE ATT&CK: S0171 View on attack.mitre.org

Aliases: Felismus

First seen
2017-04-01 00:00:00
Malware type
backdoor
Family
Malware family
Operating systems
windows
Profile updated
2026-07-07 15:44:45

Targeted industries: government-and-public-sector

Targeted regions: country_code:ar country_code:br country_code:uk

Context

Felismus is a modular backdoor that has been used by Sowbug.

Detection coverage

  • 1 YARA rules
  • 222 Sigma rules

Malware & tools used

  • Match Legitimate Resource Name or Location (attack-pattern)
  • System Owner/User Discovery (attack-pattern)
  • Web Protocols (attack-pattern)
  • Security Software Discovery (attack-pattern)
  • System Information Discovery (attack-pattern)
  • Standard Encoding (attack-pattern)
  • System Network Configuration Discovery (attack-pattern)
  • Ingress Tool Transfer (attack-pattern)
  • Symmetric Cryptography (attack-pattern)
  • Windows Command Shell (attack-pattern)

Used by threat actors

Detection rules

  • MALPEDIA_Win_Felismus_Auto (yara-rule)

Reports & references

  • Broadcom/Symantec — Sowbug Cyber Espionage Group Targets South American And Southeast Asian Governments (report)
  • malpedia.caad.fkie.fraunhofer.de — Win.Felismus (report)
  • MITRE ATT&CK — S0171 (report)
  • blogs.forcepoint.com — Playing Cat Mouse Introducing Felismus Malware (report)

External references