{
  "type": "malware",
  "spec_version": "2.1",
  "id": "malware--a020a61c-423f-4195-8c46-ba1d21abba37",
  "created": "2020-05-13T20:14:53.171Z",
  "created_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5",
  "revoked": false,
  "external_references": [
    {
      "source_name": "mitre-attack",
      "url": "https://attack.mitre.org/software/S0446",
      "external_id": "S0446"
    },
    {
      "source_name": "Ryuk",
      "description": "(Citation: CrowdStrike Ryuk January 2019) (Citation: Bleeping Computer - Ryuk WoL) "
    },
    {
      "source_name": "Bleeping Computer - Ryuk WoL",
      "description": "Abrams, L. (2021, January 14). Ryuk Ransomware Uses Wake-on-Lan To Encrypt Offline Devices. Retrieved February 11, 2021.",
      "url": "https://www.bleepingcomputer.com/news/security/ryuk-ransomware-uses-wake-on-lan-to-encrypt-offline-devices/"
    },
    {
      "source_name": "FireEye Ryuk and Trickbot January 2019",
      "description": "Goody, K., et al (2019, January 11). A Nasty Trick: From Credential Theft Malware to Business Disruption. Retrieved May 12, 2020.",
      "url": "https://www.fireeye.com/blog/threat-research/2019/01/a-nasty-trick-from-credential-theft-malware-to-business-disruption.html"
    },
    {
      "source_name": "CrowdStrike Ryuk January 2019",
      "description": "Hanel, A. (2019, January 10). Big Game Hunting with Ryuk: Another Lucrative Targeted Ransomware. Retrieved May 12, 2020.",
      "url": "https://www.crowdstrike.com/blog/big-game-hunting-with-ryuk-another-lucrative-targeted-ransomware/"
    },
    {
      "source_name": "FireEye FIN6 Apr 2019",
      "description": "McKeague, B. et al. (2019, April 5). Pick-Six: Intercepting a FIN6 Intrusion, an Actor Recently Tied to Ryuk and LockerGoga Ransomware. Retrieved April 17, 2019.",
      "url": "https://www.fireeye.com/blog/threat-research/2019/04/pick-six-intercepting-a-fin6-intrusion.html"
    }
  ],
  "object_marking_refs": [
    "marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168"
  ],
  "modified": "2025-04-22T22:21:23.589Z",
  "name": "Ryuk",
  "description": "[Ryuk](https://attack.mitre.org/software/S0446) is a ransomware designed to target enterprise environments that has been used in attacks since at least 2018. [Ryuk](https://attack.mitre.org/software/S0446) shares code similarities with Hermes ransomware.(Citation: CrowdStrike Ryuk January 2019)(Citation: FireEye Ryuk and Trickbot January 2019)(Citation: FireEye FIN6 Apr 2019)",
  "is_family": true,
  "x_mitre_modified_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5",
  "x_mitre_platforms": [
    "Windows"
  ],
  "x_mitre_deprecated": false,
  "x_mitre_domains": [
    "enterprise-attack",
    "ics-attack"
  ],
  "x_mitre_version": "1.4",
  "x_mitre_attack_spec_version": "3.2.0",
  "x_mitre_contributors": [
    "Matt Brenton, Zurich Insurance Group",
    "The DFIR Report"
  ],
  "x_mitre_aliases": [
    "Ryuk"
  ]
}