Fysbis

MITRE ATT&CK: S0410 View on attack.mitre.org

Aliases: Fysbis

First seen
2014-01-01 00:00:00
Malware type
backdoor
Family
Malware family
Operating systems
linux
Profile updated
2026-07-07 15:29:02

Targeted industries: government-and-public-sector defense-and-aerospace

Targeted regions: country_code:ua country_code:us

Context

Fysbis is a Linux-based backdoor used by APT28 that dates back to at least 2014.

Detection coverage

  • 111 Sigma rules

Malware & tools used

  • Standard Encoding (attack-pattern)
  • File and Directory Discovery (attack-pattern)
  • Keylogging (attack-pattern)
  • Masquerade Task or Service (attack-pattern)
  • Process Discovery (attack-pattern)
  • Encrypted/Encoded File (attack-pattern)
  • File Deletion (attack-pattern)
  • System Information Discovery (attack-pattern)
  • Systemd Service (attack-pattern)
  • Match Legitimate Resource Name or Location (attack-pattern)
  • XDG Autostart Entries (attack-pattern)
  • Unix Shell (attack-pattern)

Used by threat actors

Reports & references

  • MITRE ATT&CK — S0410 (report)
  • researchcenter.paloaltonetworks.com — A Look Into Fysbis Sofacys Linux Backdoor (report)

External references