{
  "id": "ta577",
  "name": "TA577",
  "aliases": [],
  "domain": "cyber",
  "country": "UNK",
  "category": "Cybercriminal group",
  "status": "tracked",
  "fielded": null,
  "operators": [],
  "summary": "TA577 is an initial access broker (IAB) that has distributed QakBot and Pikabot, and was among the first observed groups distributing Latrodectus in 2023.",
  "specs": [
    {
      "k": "sponsor",
      "v": "Initial access broker",
      "src": [
        "mitre-g1037"
      ],
      "conf": "medium"
    },
    {
      "k": "attack_id",
      "v": "G1037",
      "src": [
        "mitre-g1037"
      ],
      "conf": "high"
    },
    {
      "k": "techniques_count",
      "v": 6,
      "src": [
        "mitre-g1037"
      ],
      "conf": "high",
      "note": "ATT&CK v20.1"
    },
    {
      "k": "software",
      "v": "Latrodectus, Pikabot, QakBot",
      "src": [
        "mitre-g1037"
      ],
      "conf": "high",
      "note": "3 malware and tool entries linked in ATT&CK"
    }
  ],
  "payloads": [],
  "variants": [],
  "art": "cyber",
  "image": null,
  "verified": null,
  "notes": "TA577 is an initial access broker (IAB) that has distributed QakBot and Pikabot, and was among the first observed groups distributing Latrodectus in 2023. 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 G1037)"
    }
  ],
  "url": "https://www.defensepedia.com/systems/ta577.html",
  "sources": {
    "mitre-g1037": {
      "title": "TA577, Group G1037",
      "publisher": "MITRE ATT&CK",
      "url": "https://attack.mitre.org/groups/G1037/",
      "published": "2026-07-31",
      "tier": 2,
      "checked": "2026-11-08"
    }
  }
}