{
  "author": "ckeller@fusioncybersecurity.us",
  "cat": "Sensitive Process Accessed",
  "detect": {
    "event": {
      "EVENTS": [
        {
          "event": {
            "BASE_ADDRESS": 140702525030400,
            "COMMAND_LINE": "C:\\WINDOWS\\system32\\lsass.exe",
            "CREATION_TIME": 1773245868875,
            "FILE_IS_SIGNED": 1,
            "FILE_PATH": "C:\\WINDOWS\\system32\\lsass.exe",
            "HASH": "055a1226a769948a79ed0972bdee2d91937c4b521e0b9046f9b8ccc63d110115",
            "MEMORY_USAGE": 19705856,
            "PARENT": {
              "FILE_IS_SIGNED": 1,
              "FILE_PATH": "\\Device\\HarddiskVolume3\\Windows\\System32\\wininit.exe",
              "HASH": "ba26910be549b8700c08fbe2f160952288864470a30dd35c3c6b7782f7dbf857",
              "MEMORY_USAGE": 7323648,
              "PARENT_PROCESS_ID": 720,
              "PROCESS_ID": 840,
              "THIS_ATOM": "58b1f2a11a942a48999a6fbd69b1964c",
              "THREADS": 1,
              "TIMESTAMP": 1773246028618,
              "USER_NAME": "NT AUTHORITY\\SYSTEM"
            },
            "PARENT_PROCESS_ID": 840,
            "PROCESS_ID": 980,
            "THREADS": 16,
            "USER_NAME": "NT AUTHORITY\\SYSTEM"
          },
          "routing": {
            "arch": 2,
            "did": "",
            "event_id": "a3433b63-7f8c-4039-b457-6be6b11a2cf8",
            "event_time": 1773246029212,
            "event_type": "EXISTING_PROCESS",
            "ext_ip": "23.128.32.10",
            "hostname": "desktop-3nfb237",
            "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
            "int_ip": "192.168.50.40",
            "latency": 359283714,
            "moduleid": 2,
            "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
            "parent": "58b1f2a11a942a48999a6fbd69b1964c",
            "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": "b2fe617fb2365f162bc5846069b1964d"
          }
        },
        {
          "event": {
            "ACCESS_FLAGS": 5136,
            "PARENT_PROCESS_ID": 16804,
            "PROCESS_ID": 980,
            "SOURCE": {
              "BASE_ADDRESS": 140700148563968,
              "COMMAND_LINE": "OfficeClickToRun.exe /update",
              "FILE_IS_SIGNED": 1,
              "FILE_PATH": "C:\\Program Files\\Common Files\\Microsoft Shared\\ClickToRun\\Updates\\16.0.19725.20172\\OfficeClickToRun.exe",
              "HASH": "900d5869c90b3cce31fa911e737a35743c86e7393d82356229ced041a731c948",
              "MEMORY_USAGE": 2220032,
              "PARENT_ATOM": "be02bec5374849cad08f8e2b69b1966c",
              "PARENT_PROCESS_ID": 3820,
              "PROCESS_ID": 16804,
              "THIS_ATOM": "24adb12ff6701003373a926c69b70f50",
              "THREADS": 1,
              "TIMESTAMP": 1773604687680,
              "USER_NAME": "NT AUTHORITY\\SYSTEM"
            },
            "TARGET": {
              "BASE_ADDRESS": 140702525030400,
              "COMMAND_LINE": "C:\\WINDOWS\\system32\\lsass.exe",
              "CREATION_TIME": 1773245868875,
              "FILE_IS_SIGNED": 1,
              "FILE_PATH": "C:\\WINDOWS\\system32\\lsass.exe",
              "HASH": "055a1226a769948a79ed0972bdee2d91937c4b521e0b9046f9b8ccc63d110115",
              "MEMORY_USAGE": 19705856,
              "PARENT_ATOM": "58b1f2a11a942a48999a6fbd69b1964c",
              "PARENT_PROCESS_ID": 840,
              "PROCESS_ID": 980,
              "THIS_ATOM": "b2fe617fb2365f162bc5846069b1964d",
              "THREADS": 16,
              "TIMESTAMP": 1773246029212,
              "USER_NAME": "NT AUTHORITY\\SYSTEM"
            }
          },
          "routing": {
            "arch": 2,
            "did": "",
            "event_id": "72be5a00-428e-4303-8eaf-a10a2cb9f3ed",
            "event_time": 1773605312767,
            "event_type": "REMOTE_PROCESS_HANDLE",
            "ext_ip": "23.128.32.10",
            "hostname": "desktop-3nfb237",
            "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
            "int_ip": "192.168.50.40",
            "latency": 159,
            "moduleid": 2,
            "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
            "parent": "24adb12ff6701003373a926c69b70f50",
            "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"
            ],
            "target": "b2fe617fb2365f162bc5846069b1964d",
            "this": "baa8520ce8465d5d88662b6669b711c1"
          }
        }
      ]
    },
    "routing": {
      "arch": 2,
      "did": "",
      "event_id": "fa6f03c3-a647-481e-8165-cee570701b9f",
      "event_time": 1773605313142,
      "event_type": "SENSITIVE_PROCESS_ACCESS",
      "ext_ip": "23.128.32.10",
      "hostname": "desktop-3nfb237",
      "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
      "int_ip": "192.168.50.40",
      "latency": -215,
      "moduleid": 2,
      "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
      "parent": "24adb12ff6701003373a926c69b70f50",
      "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"
      ],
      "target": "b2fe617fb2365f162bc5846069b1964d",
      "this": "2f21c6709e58ede9d31c12d469b711c1"
    }
  },
  "detect_id": "0089588e-3190-4c8b-b320-541569b711c0",
  "gen_time": 1773605312926,
  "link": "https://app.limacharlie.io/orgs/d3541070-8b0e-4663-8a6a-aa0727aacd36/sensors/ed8f7c3f-3a1a-493e-8fa4-35eb8c30b136/timeline?time=1773605313\u0026selected=2f21c6709e58ede9d31c12d469b711c1",
  "namespace": "general",
  "routing": {
    "arch": 2,
    "did": "",
    "event_id": "fa6f03c3-a647-481e-8165-cee570701b9f",
    "event_time": 1773605313142,
    "event_type": "SENSITIVE_PROCESS_ACCESS",
    "ext_ip": "23.128.32.10",
    "hostname": "desktop-3nfb237",
    "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
    "int_ip": "192.168.50.40",
    "latency": -215,
    "moduleid": 2,
    "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
    "parent": "24adb12ff6701003373a926c69b70f50",
    "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"
    ],
    "target": "b2fe617fb2365f162bc5846069b1964d",
    "this": "2f21c6709e58ede9d31c12d469b711c1"
  },
  "source": "d3541070-8b0e-4663-8a6a-aa0727aacd36.b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175.ed8f7c3f-3a1a-493e-8fa4-35eb8c30b136.10000000.2",
  "source_rule": "general.Sensitive Process Accessed",
  "ts": 1773605312000
}

{
  "confidence": 0.95,
  "false_positive_reason": "Legitimate Windows system binary (lsass.exe) running from expected location with valid Microsoft signature, consistent with historical analyst feedback marking this rule as false positive for normal system activity.",
  "investigation_questions": [
    "Is this process running as expected during normal system operations?",
    "Are there any recent changes to lsass.exe permissions or behavior?"
  ],
  "ioc_analysis": "lsass.exe is a critical Windows system process responsible for authentication and security. The hash matches the known good signature, it is signed by Microsoft, and it is running from C:\\WINDOWS\\system32\\ with parent process wininit.exe under SYSTEM user. This pattern indicates normal OS operation.",
  "iocs_extracted": [
    {
      "type": "file_path",
      "value": "C:\\WINDOWS\\system32\\lsass.exe"
    },
    {
      "type": "hash",
      "value": "055a1226a769948a79ed0972bdee2d91937c4b521e0b9046f9b8ccc63d110115"
    }
  ],
  "mitre_techniques": [],
  "recommended_actions": [
    "Manual analyst review required \u2014 AI models disagree or one model failed",
    "Log the event for audit purposes",
    "No immediate action required",
    "Continue monitoring for anomalous behavior patterns"
  ],
  "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:** 0.95\nThe detection flagged lsass.exe access, but the process is a known Windows system binary running from its expected location in System32 and is Microsoft-signed. Historical analyst feedback consistently marks this rule as false positive for legitimate system activity.\n\n**IOC Analysis:** lsass.exe is a critical Windows system process responsible for authentication and security. The hash matches the known good signature, it is signed by Microsoft, and it is running from C:\\WINDOWS\\system32\\ with parent process wininit.exe under SYSTEM user. This pattern indicates normal OS operation.",
  "verdict": "suspicious",
  "voting": {
    "auto_action": "manual_review",
    "mode": "split",
    "total_models": 2,
    "vote_summary": [
      "qwen3.5:4b: false_positive (informational, 95% confidence)"
    ],
    "votes": [],
    "winning_count": 1,
    "winning_verdict": "suspicious"
  }
}