{
  "id": "cleaver",
  "name": "Cleaver",
  "aliases": [
    "Threat Group 2889",
    "TG-2889"
  ],
  "domain": "cyber",
  "country": "IRN",
  "category": "Suspected state-linked cyber threat group",
  "status": "tracked",
  "fielded": null,
  "operators": [
    "IRN"
  ],
  "summary": "Cleaver is a threat group that has been attributed to Iranian actors and is responsible for activity tracked as Operation Cleaver. Strong circumstantial evidence suggests Cleaver is linked to Threat Group 2889 (TG-2889).",
  "specs": [
    {
      "k": "sponsor",
      "v": "Attributed to Iranian actors",
      "src": [
        "mitre-g0003"
      ],
      "conf": "medium"
    },
    {
      "k": "attack_id",
      "v": "G0003",
      "src": [
        "mitre-g0003"
      ],
      "conf": "high"
    },
    {
      "k": "techniques_count",
      "v": 5,
      "src": [
        "mitre-g0003"
      ],
      "conf": "high",
      "note": "ATT&CK v20.1"
    },
    {
      "k": "software",
      "v": "Mimikatz, Net Crawler, PsExec, TinyZBot",
      "src": [
        "mitre-g0003"
      ],
      "conf": "high",
      "note": "4 malware and tool entries linked in ATT&CK"
    }
  ],
  "payloads": [],
  "variants": [],
  "art": "cyber",
  "image": null,
  "verified": null,
  "notes": "Cleaver is a threat group that has been attributed to Iranian actors and is responsible for activity tracked as Operation Cleaver. Strong circumstantial evidence suggests Cleaver is linked to Threat Group 2889 (TG-2889). Description adapted from MITRE ATT&CK®, © The MITRE Corporation, used under the ATT&CK Terms of Use.",
  "changelog": [
    {
      "date": "2026-11-08",
      "change": "Entry created from MITRE ATT&CK Enterprise v20.1 (group G0003)"
    }
  ],
  "url": "https://www.defensepedia.com/systems/cleaver.html",
  "sources": {
    "mitre-g0003": {
      "title": "Cleaver, Group G0003",
      "publisher": "MITRE ATT&CK",
      "url": "https://attack.mitre.org/groups/G0003/",
      "published": "2026-07-31",
      "tier": 2,
      "checked": "2026-11-08"
    }
  }
}