NanHaiShu

MITRE ATT&CK: S0228 View on attack.mitre.org

Aliases: NanHaiShu

First seen
2015-06-01 00:00:00
Malware type
rat, backdoor
Family
Malware family
Operating systems
windows
Profile updated
2026-07-07 12:52:47

Targeted industries: government-and-public-sector professional-services

Targeted regions: country_code:ph country_code:vn

Context

NanHaiShu is a remote access tool and JScript backdoor used by Leviathan. NanHaiShu has been used to target government and private-sector organizations that have relations to the South China Sea dispute.

Detection coverage

  • 400 Sigma rules

Malware & tools used

  • Encrypted/Encoded File (attack-pattern)
  • JavaScript (attack-pattern)
  • Disable or Modify Tools (attack-pattern)
  • Visual Basic (attack-pattern)
  • System Network Configuration Discovery (attack-pattern)
  • Ingress Tool Transfer (attack-pattern)
  • File Deletion (attack-pattern)
  • Mshta (attack-pattern)
  • DNS (attack-pattern)
  • Registry Run Keys / Startup Folder (attack-pattern)
  • System Information Discovery (attack-pattern)
  • System Owner/User Discovery (attack-pattern)

Used by threat actors

Reports & references

  • proofpoint.com — Leviathan Espionage Actor Spearphishes Maritime And Defense Targets (report)
  • malpedia.caad.fkie.fraunhofer.de — Js.Nanhaishu (report)
  • f-secure.com — Nanhaishu Whitepaper (report)
  • MITRE ATT&CK — S0228 (report)
  • community.spiceworks.com — 1028936 Stealthy Cyberespionage Campaign Attacks With Social Engineering (report)

External references