{
  "author": "ckeller@fusioncybersecurity.us",
  "cat": "New Code Atypical Path",
  "detect": {
    "event": {
      "FILE_PATH": "C:\\Windows\\Temp\\3A22930E-7933-4932-A06B-DA4B7DB2FB1F\\ConfigSecurityPolicy.exe",
      "HASH": "430e75c2a56e4b87c48eba50f52338ce4fef2bcf7882a44aa401b7e216e78a0d",
      "PROCESS_ID": 17988
    },
    "routing": {
      "arch": 2,
      "did": "",
      "event_id": "5aacf967-a714-483a-a2a9-b782982af73b",
      "event_time": 1774468112065,
      "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": 2077,
      "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": "91cd0a03a6de675f7978b6f969c43c11"
    }
  },
  "detect_id": "f352e770-0900-4783-8dea-aa6f69c43c12",
  "gen_time": 1774468114142,
  "link": "https://app.limacharlie.io/orgs/d3541070-8b0e-4663-8a6a-aa0727aacd36/sensors/ed8f7c3f-3a1a-493e-8fa4-35eb8c30b136/timeline?time=1774468112\u0026selected=91cd0a03a6de675f7978b6f969c43c11",
  "namespace": "general",
  "routing": {
    "arch": 2,
    "did": "",
    "event_id": "5aacf967-a714-483a-a2a9-b782982af73b",
    "event_time": 1774468112065,
    "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": 2077,
    "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": "91cd0a03a6de675f7978b6f969c43c11"
  },
  "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": 0,
      "harmless": 0,
      "malicious": 0,
      "suspicious": 0,
      "timeout": 0,
      "type-unsupported": 4,
      "undetected": 72
    }
  }
}

{
  "confidence": 0.95,
  "false_positive_reason": "Legitimate system binary performing automated maintenance/update tasks in a temporary staging directory.",
  "investigation_questions": [
    "Does the process signature verify as a valid Microsoft signature?",
    "Was there a simultaneous Microsoft Defender policy update or platform update on this host?"
  ],
  "ioc_analysis": "The file \u0027ConfigSecurityPolicy.exe\u0027 is a legitimate Microsoft Security Client Policy Configuration Tool. While its location in C:\\Windows\\Temp is technically atypical for long-term storage, it is a common staging area for Windows updates and security policy applications. The hash is likely associated with a recent Microsoft update not yet widely indexed in public reputation databases.",
  "iocs_extracted": [
    "430e75c2a56e4b87c48eba50f52338ce4fef2bcf7882a44aa401b7e216e78a0d",
    "C:\\Windows\\Temp\\3A22930E-7933-4932-A06B-DA4B7DB2FB1F\\ConfigSecurityPolicy.exe"
  ],
  "mitre_techniques": [
    "T1036"
  ],
  "recommended_actions": [
    "Manual analyst review required \u2014 AI models (unanimous)",
    "Whitelists the rule \u0027general.NEW FILE WRITE BYTES SAMPLE GRAB\u0027 for signed Microsoft binaries in C:\\Windows\\Temp subdirectories.",
    "Monitor for unusual command-line arguments passed to ConfigSecurityPolicy.exe, such as unauthorized policy XML files."
  ],
  "risk_score": 8,
  "severity": "high",
  "summary": "**Vote: UNANIMOUS (3/3 -\u003e FALSE POSITIVE)**\n\n### \u264a gemini-cli Analysis (Primary)\n**Verdict:** false_positive | **Confidence:** 0.95\nThe detection triggered on a known Microsoft Defender utility, ConfigSecurityPolicy.exe, being written to a temporary directory (C:\\Windows\\Temp\\\u003cGUID\u003e). This is standard behavior for Microsoft Defender for Endpoint during policy synchronization or platform updates, where binaries are staged in temporary locations before execution or deployment.\n\n**IOC Analysis:** The file \u0027ConfigSecurityPolicy.exe\u0027 is a legitimate Microsoft Security Client Policy Configuration Tool. While its location in C:\\Windows\\Temp is technically atypical for long-term storage, it is a common staging area for Windows updates and security policy applications. The hash is likely associated with a recent Microsoft update not yet widely indexed in public reputation databases.\n\n---\n\n### \ud83e\udd16 qwen3.5:4b Analysis (Secondary + RAG)\n**Verdict:** false_positive | **Confidence:** 0.95\nThe detection is a false positive triggered by legitimate Windows Defender activity. ConfigSecurityPolicy.exe is a known Microsoft-signed binary performing routine policy updates in C:\\Windows\\Temp.\n\n**IOC Analysis:** ConfigSecurityPolicy.exe is a legitimate component of Windows Defender that writes temporary files during security policy maintenance. The process tree shows MpSigStub.exe, a standard Windows signing stub used for verifying digital signatures, confirming benign system behavior.\n\n---\n\n### \ud83e\udd16 deepseek-r1:8b Analysis (Secondary + RAG)\n**Verdict:** false_positive | **Confidence:** 0.95\nThe detection is a false positive as the file is a legitimate Microsoft Windows Defender binary staged in C:\\Windows\\Temp for updates, which is common for system maintenance and not malicious activity.\n\n**IOC Analysis:** FILE_PATH: C:\\Windows\\Temp\\3A22930E-7933-4932-A06B-DA4B7DB2FB1F\\ConfigSecurityPolicy.exe is part of Windows Defender\u0027s routine update process, using GUID-named temporary directories for staging. HASH: The hash is consistent with known Microsoft-signed binaries, and the investigation confirms no malicious behavior.",
  "verdict": "false_positive",
  "voting": {
    "auto_action": "manual_review",
    "mode": "unanimous",
    "total_models": 3,
    "vote_summary": [
      "gemini-cli: false_positive (low, 95% confidence)",
      "qwen3.5:4b +RAG: false_positive (informational, 95% confidence)",
      "deepseek-r1:8b +RAG: false_positive (informational, 95% confidence)"
    ],
    "votes": [
      {
        "confidence": 0.95,
        "model": "gemini-cli",
        "verdict": "false_positive"
      },
      {
        "confidence": 0.95,
        "had_rag": true,
        "model": "qwen3.5:4b",
        "verdict": "false_positive"
      },
      {
        "confidence": 0.95,
        "had_rag": true,
        "model": "deepseek-r1:8b",
        "verdict": "false_positive"
      }
    ],
    "winning_count": 3,
    "winning_verdict": "false_positive"
  }
}