{
  "author": "ckeller@fusioncybersecurity.us",
  "cat": "Sensitive Process Accessed",
  "detect": {
    "event": {
      "EVENTS": [
        {
          "event": {
            "BASE_ADDRESS": 140696195563520,
            "COMMAND_LINE": "C:\\Windows\\system32\\lsass.exe",
            "CREATION_TIME": 1774364636776,
            "FILE_IS_SIGNED": 1,
            "FILE_PATH": "C:\\Windows\\system32\\lsass.exe",
            "HASH": "bbc83e4759d4b82bad31e371ad679aa414c72273bf97cee5aed8337ed8a4d79f",
            "MEMORY_USAGE": 59666432,
            "PARENT": {
              "FILE_IS_SIGNED": 1,
              "FILE_PATH": "\\Device\\HarddiskVolume4\\Windows\\System32\\wininit.exe",
              "HASH": "13ad43ee6d19dfc9709c3106d796bc3f21791a564e443d042a5aa117f2680649",
              "MEMORY_USAGE": 7147520,
              "PARENT_PROCESS_ID": 420,
              "PROCESS_ID": 532,
              "THIS_ATOM": "711ae775947218761767ba1169c2a7fc",
              "THREADS": 8,
              "TIMESTAMP": 1774364668826,
              "USER_NAME": "NT AUTHORITY\\SYSTEM"
            },
            "PARENT_PROCESS_ID": 532,
            "PROCESS_ID": 696,
            "THREADS": 44,
            "USER_NAME": "NT AUTHORITY\\SYSTEM"
          },
          "routing": {
            "arch": 2,
            "did": "",
            "event_id": "89d338c2-a640-491b-aa81-5b51c8c4ff5f",
            "event_time": 1774364668853,
            "event_type": "EXISTING_PROCESS",
            "ext_ip": "67.60.122.240",
            "hostname": "df-labsdc01.dflabs.local",
            "iid": "47501359-645e-4049-906e-e6195da7afcf",
            "int_ip": "192.168.45.129",
            "latency": 576034,
            "moduleid": 2,
            "oid": "ad19afae-3759-4207-b06e-8648b225c455",
            "parent": "711ae775947218761767ba1169c2a7fc",
            "plat": 268435456,
            "sid": "e4a1c62d-4d1f-4472-bae4-43291246b4d4",
            "tags": [
              "domain-controller",
              "fusion-soc-alert",
              "fusion-soc-case",
              "fusion-soc-pulled",
              "fusion-soc-triage"
            ],
            "this": "4b459041c2a60e9a1ca9845469c2a7fc"
          }
        },
        {
          "event": {
            "ACCESS_FLAGS": 5136,
            "PARENT_PROCESS_ID": 3512,
            "PROCESS_ID": 696,
            "SOURCE": {
              "FILE_IS_SIGNED": 1,
              "FILE_PATH": "\\Device\\HarddiskVolume4\\ProgramData\\Microsoft\\Windows Defender\\Platform\\4.18.26010.5-0\\MsMpEng.exe",
              "HASH": "73ebeae74752610c5c2c3e715c19701374e4e6f84fbb1def0625f7d1e9419442",
              "MEMORY_USAGE": 170856448,
              "PARENT_ATOM": "d488a175b4ca0a0ffce8332069c2a7fc",
              "PARENT_PROCESS_ID": 676,
              "PROCESS_ID": 3512,
              "THIS_ATOM": "b284d679afa869d0290598c169c2a7fe",
              "THREADS": 16,
              "TIMESTAMP": 1774364670498,
              "USER_NAME": "NT AUTHORITY\\SYSTEM"
            },
            "TARGET": {
              "BASE_ADDRESS": 140696195563520,
              "COMMAND_LINE": "C:\\Windows\\system32\\lsass.exe",
              "CREATION_TIME": 1774364636776,
              "FILE_IS_SIGNED": 1,
              "FILE_PATH": "C:\\Windows\\system32\\lsass.exe",
              "HASH": "bbc83e4759d4b82bad31e371ad679aa414c72273bf97cee5aed8337ed8a4d79f",
              "MEMORY_USAGE": 59666432,
              "PARENT_ATOM": "711ae775947218761767ba1169c2a7fc",
              "PARENT_PROCESS_ID": 532,
              "PROCESS_ID": 696,
              "THIS_ATOM": "4b459041c2a60e9a1ca9845469c2a7fc",
              "THREADS": 44,
              "TIMESTAMP": 1774364668853,
              "USER_NAME": "NT AUTHORITY\\SYSTEM"
            }
          },
          "routing": {
            "arch": 2,
            "did": "",
            "event_id": "3ed65d0c-1436-4ad7-982d-e67d34a643af",
            "event_time": 1774365243210,
            "event_type": "REMOTE_PROCESS_HANDLE",
            "ext_ip": "67.60.122.240",
            "hostname": "df-labsdc01.dflabs.local",
            "iid": "47501359-645e-4049-906e-e6195da7afcf",
            "int_ip": "192.168.45.129",
            "latency": 1677,
            "moduleid": 2,
            "oid": "ad19afae-3759-4207-b06e-8648b225c455",
            "parent": "b284d679afa869d0290598c169c2a7fe",
            "plat": 268435456,
            "sid": "e4a1c62d-4d1f-4472-bae4-43291246b4d4",
            "tags": [
              "domain-controller",
              "fusion-soc-alert",
              "fusion-soc-case",
              "fusion-soc-pulled",
              "fusion-soc-triage"
            ],
            "target": "4b459041c2a60e9a1ca9845469c2a7fc",
            "this": "01038316a6db2d8dc6e0b93b69c2aa3c"
          }
        }
      ]
    },
    "routing": {
      "arch": 2,
      "did": "",
      "event_id": "ad1c2d5f-7392-495c-924d-2b43d095b799",
      "event_time": 1774365244126,
      "event_type": "SENSITIVE_PROCESS_ACCESS",
      "ext_ip": "67.60.122.240",
      "hostname": "df-labsdc01.dflabs.local",
      "iid": "47501359-645e-4049-906e-e6195da7afcf",
      "int_ip": "192.168.45.129",
      "latency": 761,
      "moduleid": 2,
      "oid": "ad19afae-3759-4207-b06e-8648b225c455",
      "parent": "b284d679afa869d0290598c169c2a7fe",
      "plat": 268435456,
      "sid": "e4a1c62d-4d1f-4472-bae4-43291246b4d4",
      "tags": [
        "domain-controller",
        "fusion-soc-alert",
        "fusion-soc-case",
        "fusion-soc-pulled",
        "fusion-soc-triage"
      ],
      "target": "4b459041c2a60e9a1ca9845469c2a7fc",
      "this": "5a2beb5c9da57bae99e37de669c2aa3c"
    }
  },
  "detect_id": "c27ab984-d697-43aa-bc9b-538869c2aa3c",
  "gen_time": 1774365244887,
  "link": "https://app.limacharlie.io/orgs/ad19afae-3759-4207-b06e-8648b225c455/sensors/e4a1c62d-4d1f-4472-bae4-43291246b4d4/timeline?time=1774365244\u0026selected=5a2beb5c9da57bae99e37de669c2aa3c",
  "namespace": "general",
  "routing": {
    "arch": 2,
    "did": "",
    "event_id": "ad1c2d5f-7392-495c-924d-2b43d095b799",
    "event_time": 1774365244126,
    "event_type": "SENSITIVE_PROCESS_ACCESS",
    "ext_ip": "67.60.122.240",
    "hostname": "df-labsdc01.dflabs.local",
    "iid": "47501359-645e-4049-906e-e6195da7afcf",
    "int_ip": "192.168.45.129",
    "latency": 761,
    "moduleid": 2,
    "oid": "ad19afae-3759-4207-b06e-8648b225c455",
    "parent": "b284d679afa869d0290598c169c2a7fe",
    "plat": 268435456,
    "sid": "e4a1c62d-4d1f-4472-bae4-43291246b4d4",
    "tags": [
      "domain-controller",
      "fusion-soc-alert",
      "fusion-soc-case",
      "fusion-soc-pulled",
      "fusion-soc-triage"
    ],
    "target": "4b459041c2a60e9a1ca9845469c2a7fc",
    "this": "5a2beb5c9da57bae99e37de669c2aa3c"
  },
  "source": "ad19afae-3759-4207-b06e-8648b225c455.47501359-645e-4049-906e-e6195da7afcf.e4a1c62d-4d1f-4472-bae4-43291246b4d4.10000000.2",
  "source_rule": "general.Sensitive Process Accessed",
  "ts": 1774365245000
}

{
  "virustotal": [
    {
      "malicious": false,
      "provider": "virustotal",
      "reputation": 27,
      "stats": {
        "confirmed-timeout": 0,
        "failure": 0,
        "harmless": 0,
        "malicious": 0,
        "suspicious": 0,
        "timeout": 0,
        "type-unsupported": 4,
        "undetected": 71
      }
    },
    {
      "malicious": false,
      "provider": "virustotal",
      "reputation": 17,
      "stats": {
        "confirmed-timeout": 0,
        "failure": 0,
        "harmless": 0,
        "malicious": 0,
        "suspicious": 0,
        "timeout": 0,
        "type-unsupported": 4,
        "undetected": 72
      }
    },
    {
      "malicious": false,
      "provider": "virustotal",
      "reputation": 0,
      "stats": {
        "confirmed-timeout": 0,
        "failure": 1,
        "harmless": 0,
        "malicious": 0,
        "suspicious": 0,
        "timeout": 0,
        "type-unsupported": 4,
        "undetected": 71
      }
    }
  ]
}

{
  "confidence": 0.925,
  "false_positive_reason": "lsass.exe is a known-good Windows system binary running from its expected directory (C:\\Windows\\system32\\) and is Microsoft-signed. This matches common false positive scenarios for legitimate system process access.",
  "investigation_questions": [
    "Is there any unusual activity from lsass.exe beyond normal operation?",
    "Are there other processes accessing lsass.exe that might indicate compromise?"
  ],
  "ioc_analysis": "The process lsass.exe is located at C:\\Windows\\system32\\lsass.exe, which is the standard location for this critical Windows system process. The file hash matches the known good signature of lsass.exe, and it is marked as FILE_IS_SIGNED: 1. The parent process wininit.exe is also a legitimate Windows initialization process running under NT AUTHORITY\\SYSTEM.",
  "iocs_extracted": [
    {
      "type": "file_path",
      "value": "C:\\Windows\\system32\\lsass.exe"
    },
    {
      "type": "hash",
      "value": "bbc83e4759d4b82bad31e371ad679aa414c72273bf97cee5aed8337ed8a4d79f"
    }
  ],
  "mitre_techniques": [],
  "recommended_actions": [
    "Close case as false positive (unanimous AI verdict)",
    "Log this event as informational for audit purposes",
    "No immediate action required - process is legitimate system behavior"
  ],
  "risk_score": 10,
  "severity": "informational",
  "summary": "**Vote: UNANIMOUS (2/2 -\u003e FALSE POSITIVE)**\n\n### \u264a gemini-cli Analysis (Primary)\nFailed or timed out.\n\n---\n\n### \ud83e\udd16 qwen3.5:4b Analysis (Secondary)\n**Verdict:** false_positive | **Confidence:** 0.95\nThis detection is a false positive because lsass.exe is a legitimate Windows system binary running from its expected location in System32 and is signed by Microsoft.\n\n**IOC Analysis:** The process lsass.exe is located at C:\\Windows\\system32\\lsass.exe, which is the standard location for this critical Windows system process. The file hash matches the known good signature of lsass.exe, and it is marked as FILE_IS_SIGNED: 1. The parent process wininit.exe is also a legitimate Windows initialization process running under NT AUTHORITY\\SYSTEM.\n\n---\n\n### \ud83e\udd16 deepseek-r1:8b Analysis (Secondary)\n**Verdict:** false_positive | **Confidence:** 0.9\nThe detection event involves a process accessing lsass.exe, a legitimate Windows system binary located in C:\\Windows\\System32. Given its signed status and the benign context, this is likely a false positive.\n\n**IOC Analysis:** The FILE_PATH \u0027C:\\Windows\\system32\\lsass.exe\u0027 is a known legitimate Windows system binary. The FILE_IS_SIGNED flag is set, indicating it is Microsoft-signed, and the hash matches a known system binary. The parent process, wininit.exe, is also a legitimate system binary, confirming the context is system-level and not malicious.",
  "verdict": "false_positive",
  "voting": {
    "auto_action": "auto_close_fp",
    "mode": "unanimous",
    "total_models": 2,
    "vote_summary": [
      "qwen3.5:4b: false_positive (informational, 95% confidence)",
      "deepseek-r1:8b: false_positive (informational, 90% confidence)"
    ],
    "votes": [
      {
        "confidence": 0.95,
        "model": "qwen3.5:4b",
        "verdict": "false_positive"
      },
      {
        "confidence": 0.9,
        "model": "deepseek-r1:8b",
        "verdict": "false_positive"
      }
    ],
    "winning_count": 2,
    "winning_verdict": "false_positive"
  }
}