{
 "public_id": "AIR-2025-0122",
 "incident_id": "2025-08-anthropic-gtg-5004-ransomware-raas",
 "date_disclosed": "2025-08-27",
 "date_occurred": "2025",
 "title": "GTG-5004: actor with no independent malware skill used Claude to build and sell ransomware variants",
 "class": "in_the_wild",
 "attack_surface": "coding_agent",
 "initial_vector": "direct_misuse_for_malware_development",
 "agent_capability_abused": [
  "code_generation",
  "debugging",
  "evasion_technique_design"
 ],
 "target_product": "Claude",
 "target_vendor": "Anthropic",
 "autonomy_level": "assistant",
 "impact_realized": true,
 "impact_type": [
  "malware_distribution",
  "commercial_sale_of_malware"
 ],
 "blast_radius": "Ransomware sold on dark web forums for $400-$1200 per variant",
 "cve": [],
 "taxonomy": {
  "owasp_asi": [
   "ASI02"
  ],
  "mitre_atlas": [],
  "labels": [
   "capability_uplift",
   "raas",
   "malware_development"
  ]
 },
 "defense_present": "Claude safety training",
 "defense_bypassed": true,
 "fix_shipped": "Accounts banned (Aug 2025)",
 "primary_sources": [
  "https://www.anthropic.com/news/detecting-countering-misuse-aug-2025"
 ],
 "verified_quote": "used Claude to develop, market, and distribute several variants of ransomware",
 "confidence": "high",
 "notes": "Anthropic's assessment that the actor 'could not implement or troubleshoot core malware components' without Claude is the load-bearing claim about uplift; it is a vendor inference from prompt history, not externally verified. Downstream victim impact from the sold ransomware was not quantified.",
 "risk_category": "security_fraud",
 "risk_secondary": [
  "product_misuse"
 ],
 "risk_subcategory": "Ransomware & Extortion",
 "risk_sub_secondary": [],
 "ai_entity": "generative",
 "agency": "human_acted_on_output",
 "agency_debatable": false,
 "agency_reason": "Claude wrote the ransomware; the actor sold and buyers deployed it",
 "vector_family": "misuse",
 "vector_detail": "direct_misuse_for_malware_development",
 "guardrail_kind": [
  "abuse_detection"
 ],
 "guardrail_outcome": "silent",
 "xrefs": {
  "aiid": [],
  "atlas": [],
  "cve": [],
  "ghsa": []
 },
 "primary_asi": "ASI02",
 "agent_framework": "unknown",
 "model_provider": "anthropic",
 "model_name": "",
 "detection_mechanism": "vendor_disclosure",
 "tool_access": "unknown",
 "financial_loss_band": "unknown",
 "eai_category": "unsafe_actuation",
 "eai_domain": "agent_behaviour",
 "eai_secondary": [],
 "eai_reason": "subcategory: Ransomware & Extortion",
 "asi_curated": [],
 "asi_scope": "in_scope",
 "asi_provenance": "rule",
 "asi_reason": "ASI02 (eai_category=unsafe_actuation)",
 "submitted_by": "EAI Internal"
}