Orz

MITRE ATT&CK: S0229 View on attack.mitre.org

Aliases: AIRBREAK, Orz

First seen
2014-01-01 00:00:00
Malware type
backdoor
Family
Malware family
Operating systems
windows
Profile updated
2026-07-07 12:52:49

Targeted industries: government-and-public-sector energy-and-utilities

Targeted regions: country_code:cn country_code:us country_code:ca

Context

Orz is a custom JavaScript backdoor used by Leviathan. It was observed being used in 2014 as well as in August 2017 when it was dropped by Microsoft Publisher files.

Detection coverage

  • 378 Sigma rules

Malware & tools used

  • Windows Command Shell (attack-pattern)
  • Regsvr32 (attack-pattern)
  • Bidirectional Communication (attack-pattern)
  • Process Discovery (attack-pattern)
  • System Information Discovery (attack-pattern)
  • Indicator Removal (attack-pattern)
  • Software Discovery (attack-pattern)
  • Ingress Tool Transfer (attack-pattern)
  • Modify Registry (attack-pattern)
  • System Network Configuration Discovery (attack-pattern)
  • Process Hollowing (attack-pattern)
  • Obfuscated Files or Information (attack-pattern)
  • File and Directory Discovery (attack-pattern)

Used by threat actors

Related threat objects

Reports & references

  • proofpoint.com — Leviathan Espionage Actor Spearphishes Maritime And Defense Targets (report)
  • Mandiant — Suspected Chinese Espionage Group Targeting Maritime And Engineering Industries (report)
  • MITRE ATT&CK — S0229 (report)

External references