{
  "author": "ckeller@fusioncybersecurity.us",
  "cat": "New Code Atypical Path",
  "detect": {
    "event": {
      "FILE_PATH": "C:\\Windows\\Temp\\3A22930E-7933-4932-A06B-DA4B7DB2FB1F\\DlpUserAgent.exe",
      "HASH": "bd0207d59c13bca939d1e9b79eedadcdd0eebd52c78bd6f659e3ede52d44ccc3",
      "PROCESS_ID": 17988
    },
    "routing": {
      "arch": 2,
      "did": "",
      "event_id": "190e794a-f14e-44d0-a47c-dda84caf8778",
      "event_time": 1774468112236,
      "event_type": "NEW_DOCUMENT",
      "ext_ip": "23.128.32.10",
      "hostname": "desktop-3nfb237",
      "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
      "int_ip": "192.168.50.40",
      "latency": 2844,
      "moduleid": 2,
      "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
      "parent": "9727bc761f07cc5e5c90b93a69c43c07",
      "plat": 268435456,
      "sid": "ed8f7c3f-3a1a-493e-8fa4-35eb8c30b136",
      "tags": [
        "fusion-soc-alert",
        "fusion-soc-case",
        "fusion-soc-pulled",
        "fusion-soc-triage",
        "fusionsoc-critical",
        "fusionsoc-high",
        "fusionsoc-investigated",
        "qucikbooks",
        "windows",
        "yara_detection_memory"
      ],
      "this": "ccfee5e1dea71267f9542c7469c43c12"
    }
  },
  "detect_id": "f6c41f33-9c2a-43df-918f-839f69c43c13",
  "gen_time": 1774468115080,
  "link": "https://app.limacharlie.io/orgs/d3541070-8b0e-4663-8a6a-aa0727aacd36/sensors/ed8f7c3f-3a1a-493e-8fa4-35eb8c30b136/timeline?time=1774468112\u0026selected=ccfee5e1dea71267f9542c7469c43c12",
  "namespace": "general",
  "routing": {
    "arch": 2,
    "did": "",
    "event_id": "190e794a-f14e-44d0-a47c-dda84caf8778",
    "event_time": 1774468112236,
    "event_type": "NEW_DOCUMENT",
    "ext_ip": "23.128.32.10",
    "hostname": "desktop-3nfb237",
    "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
    "int_ip": "192.168.50.40",
    "latency": 2844,
    "moduleid": 2,
    "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
    "parent": "9727bc761f07cc5e5c90b93a69c43c07",
    "plat": 268435456,
    "sid": "ed8f7c3f-3a1a-493e-8fa4-35eb8c30b136",
    "tags": [
      "fusion-soc-alert",
      "fusion-soc-case",
      "fusion-soc-pulled",
      "fusion-soc-triage",
      "fusionsoc-critical",
      "fusionsoc-high",
      "fusionsoc-investigated",
      "qucikbooks",
      "windows",
      "yara_detection_memory"
    ],
    "this": "ccfee5e1dea71267f9542c7469c43c12"
  },
  "source": "d3541070-8b0e-4663-8a6a-aa0727aacd36.b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175.ed8f7c3f-3a1a-493e-8fa4-35eb8c30b136.10000000.2",
  "source_rule": "general.NEW FILE WRITE BYTES SAMPLE GRAB",
  "ts": 1774468115000
}

{
  "virustotal": {
    "malicious": false,
    "provider": "virustotal",
    "reputation": 0,
    "stats": {
      "confirmed-timeout": 0,
      "failure": 4,
      "harmless": 0,
      "malicious": 0,
      "suspicious": 0,
      "timeout": 18,
      "type-unsupported": 4,
      "undetected": 50
    }
  }
}

{
  "confidence": 0.617,
  "false_positive_reason": null,
  "investigation_questions": [],
  "ioc_analysis": "",
  "iocs_extracted": [],
  "mitre_techniques": [],
  "recommended_actions": [
    "Manual analyst review required \u2014 AI models (majority)",
    "Manual review required"
  ],
  "risk_score": 27,
  "severity": "high",
  "summary": "**Vote: MAJORITY (2/3 -\u003e FALSE POSITIVE)**\n\n### \ud83e\udd16 qwen3.5:4b Analysis (Secondary + RAG)\n**Verdict:** false_positive | **Confidence:** 0.95\nThe detection flagged a new file write in the Windows Temp directory, but investigation reveals it is part of Microsoft Defender SmartScreen signature stub execution, which is a legitimate Windows security component.\n\n**IOC Analysis:** The process DlpUserAgent.exe spawned MpSigStub.exe running under SYSTEM context. This pattern matches known Microsoft Defender behavior for validating application signatures. The file location in Temp is standard for temporary execution artifacts, and the investigation found no suspicious activity or malicious indicators.\n\n---\n\n### \ud83e\udd16 deepseek-r1:8b Analysis (Secondary + RAG)\n**Verdict:** false_positive | **Confidence:** 0.9\nThe detection event involves a file write in the Windows Temp directory, but investigation confirmed no malicious activity. The child process MpSigStub.exe is legitimate, and the file path and hash do not indicate known threats.\n\n**IOC Analysis:** The FILE_PATH is in C:\\Windows\\Temp, which can be legitimate for temporary files. The hash is not verified against known malware databases, but the presence of a legitimate child process (MpSigStub.exe) and no suspicious activity in the investigation window suggest benign behavior. IOC validation rules indicate that processes like MpSigStub.exe are typically legitimate.",
  "verdict": "false_positive",
  "voting": {
    "auto_action": "manual_review",
    "mode": "majority",
    "total_models": 3,
    "vote_summary": [
      "gemini-cli: true_positive (medium, 0% confidence)",
      "qwen3.5:4b +RAG: false_positive (low, 95% confidence)",
      "deepseek-r1:8b +RAG: false_positive (low, 90% confidence)"
    ],
    "votes": [
      {
        "confidence": 0.0,
        "model": "gemini-cli",
        "verdict": "true_positive"
      },
      {
        "confidence": 0.95,
        "had_rag": true,
        "model": "qwen3.5:4b",
        "verdict": "false_positive"
      },
      {
        "confidence": 0.9,
        "had_rag": true,
        "model": "deepseek-r1:8b",
        "verdict": "false_positive"
      }
    ],
    "winning_count": 2,
    "winning_verdict": "false_positive"
  }
}