{
  "author": "ckeller@fusioncybersecurity.us",
  "cat": "New Code Atypical Path",
  "detect": {
    "event": {
      "ERROR": 3,
      "FILE_PATH": "C:\\Windows\\Temp\\{9C93220D-1A33-48B8-A055-AFB0F5AF53AE}\\.be\\VC_redist.x64.exe",
      "PROCESS_ID": 24540
    },
    "routing": {
      "arch": 2,
      "did": "",
      "event_id": "1318566c-6db2-4199-8530-3c48f4d227fc",
      "event_time": 1773675824342,
      "event_type": "NEW_DOCUMENT",
      "ext_ip": "23.128.32.10",
      "hostname": "desktop-atsepsk",
      "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
      "int_ip": "192.168.50.200",
      "latency": 390,
      "moduleid": 2,
      "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
      "parent": "5922b127db3c422b3cc0097469b82531",
      "plat": 268435456,
      "sid": "8f3a47be-5629-4c66-921d-17c39ed07e87",
      "tags": [
        "fusion-soc-alert",
        "fusion-soc-case",
        "fusion-soc-pulled",
        "fusion-soc-triage",
        "fusionsoc-critical",
        "fusionsoc-high",
        "fusionsoc-investigated",
        "joys",
        "windows",
        "yara_detection_memory"
      ],
      "this": "f9f4c4fd0fd33f40f8b6c2d469b82531"
    }
  },
  "detect_id": "6186401e-5220-44fb-ab90-f8a769b82530",
  "gen_time": 1773675824732,
  "link": "https://app.limacharlie.io/orgs/d3541070-8b0e-4663-8a6a-aa0727aacd36/sensors/8f3a47be-5629-4c66-921d-17c39ed07e87/timeline?time=1773675824\u0026selected=f9f4c4fd0fd33f40f8b6c2d469b82531",
  "namespace": "general",
  "routing": {
    "arch": 2,
    "did": "",
    "event_id": "1318566c-6db2-4199-8530-3c48f4d227fc",
    "event_time": 1773675824342,
    "event_type": "NEW_DOCUMENT",
    "ext_ip": "23.128.32.10",
    "hostname": "desktop-atsepsk",
    "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
    "int_ip": "192.168.50.200",
    "latency": 390,
    "moduleid": 2,
    "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
    "parent": "5922b127db3c422b3cc0097469b82531",
    "plat": 268435456,
    "sid": "8f3a47be-5629-4c66-921d-17c39ed07e87",
    "tags": [
      "fusion-soc-alert",
      "fusion-soc-case",
      "fusion-soc-pulled",
      "fusion-soc-triage",
      "fusionsoc-critical",
      "fusionsoc-high",
      "fusionsoc-investigated",
      "joys",
      "windows",
      "yara_detection_memory"
    ],
    "this": "f9f4c4fd0fd33f40f8b6c2d469b82531"
  },
  "source": "d3541070-8b0e-4663-8a6a-aa0727aacd36.b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175.8f3a47be-5629-4c66-921d-17c39ed07e87.10000000.2",
  "source_rule": "general.NEW FILE WRITE BYTES SAMPLE GRAB",
  "ts": 1773675824000
}

{
  "confidence": 0.9,
  "false_positive_reason": "Microsoft-signed binary in expected location with no malicious indicators",
  "investigation_questions": [
    "What application triggered the VC_redist.x64.exe installation?",
    "Is there a known software dependency requiring Visual C++ runtime libraries?"
  ],
  "ioc_analysis": "VC_redist.x64.exe is a well-known Microsoft-signed binary used to install runtime libraries for Visual Studio applications. Its presence in the Temp folder indicates a recent installation attempt by legitimate software, not malicious activity.",
  "iocs_extracted": [
    {
      "type": "file_path",
      "value": "C:\\Windows\\Temp\\{9C93220D-1A33-48B8-A055-AFB0F5AF53AE}\\.be\\VC_redist.x64.exe"
    }
  ],
  "mitre_techniques": [],
  "recommended_actions": [
    "Manual analyst review required \u2014 AI models disagree or one model failed",
    "Allow the process to complete its installation",
    "Monitor for subsequent suspicious behavior from this installer"
  ],
  "risk_score": 10,
  "severity": "high",
  "summary": "**Vote: SPLIT (1/2 -\u003e SUSPICIOUS)**\n\n### \u264a Gemini Analysis (Primary)\nFailed or timed out.\n\n---\n\n### \ud83e\udd16 Qwen Analysis (Secondary)\n**Verdict:** false_positive | **Confidence:** 0.9\nThe detection flagged a Microsoft Visual C++ Redistributable installer in the Windows Temp directory, which is a common false positive scenario for legitimate software installation.\n\n**IOC Analysis:** VC_redist.x64.exe is a well-known Microsoft-signed binary used to install runtime libraries for Visual Studio applications. Its presence in the Temp folder indicates a recent installation attempt by legitimate software, not malicious activity.",
  "verdict": "suspicious",
  "voting": {
    "auto_action": "manual_review",
    "mode": "split",
    "total_models": 2,
    "vote_summary": [
      "qwen3.5:4b: false_positive (low, 90% confidence)"
    ],
    "votes": [],
    "winning_count": 1,
    "winning_verdict": "suspicious"
  }
}