{
  "author": "ckeller@fusioncybersecurity.us",
  "cat": "YARA Detection in Memory - Windows_Trojan_Generic_9997489c",
  "detect": {
    "event": {
      "PROCESS": {
        "BASE_ADDRESS": 140702246764544,
        "COMMAND_LINE": "\"C:\\Program Files\\Bitdefender\\Bitdefender Security\\bdservicehost.exe\" \"settings/services/configs/bdshieldsrv_config.json\"",
        "FILE_PATH": "C:\\Program Files\\Bitdefender\\Bitdefender Security\\bdservicehost.exe",
        "MEMORY_USAGE": 1966514176,
        "PARENT_PROCESS_ID": 1680,
        "PROCESS_ID": 6096,
        "THREADS": 274,
        "USER_NAME": "NT AUTHORITY\\SYSTEM"
      },
      "PROCESS_ID": 6096,
      "RULE_NAME": "Windows_Trojan_Generic_9997489c"
    },
    "routing": {
      "arch": 2,
      "did": "",
      "event_id": "cb4be47a-e924-48b1-b04e-fccb9cbb52b8",
      "event_time": 1774166301729,
      "event_type": "YARA_DETECTION",
      "ext_ip": "23.128.32.10",
      "hostname": "desktop-atsepsk",
      "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
      "int_ip": "192.168.50.200",
      "latency": 191,
      "moduleid": 2,
      "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
      "parent": "0e216ebc38526920dcc17e5a69b2ef6f",
      "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": "13a5fd53f7187bdd24d1f6fa69bfa11d"
    }
  },
  "detect_id": "6d6a2e52-d093-4729-af47-4b2b69bfa11d",
  "gen_time": 1774166301920,
  "link": "https://app.limacharlie.io/orgs/d3541070-8b0e-4663-8a6a-aa0727aacd36/sensors/8f3a47be-5629-4c66-921d-17c39ed07e87/timeline?time=1774166301\u0026selected=13a5fd53f7187bdd24d1f6fa69bfa11d",
  "namespace": "general",
  "routing": {
    "arch": 2,
    "did": "",
    "event_id": "cb4be47a-e924-48b1-b04e-fccb9cbb52b8",
    "event_time": 1774166301729,
    "event_type": "YARA_DETECTION",
    "ext_ip": "23.128.32.10",
    "hostname": "desktop-atsepsk",
    "iid": "b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175",
    "int_ip": "192.168.50.200",
    "latency": 191,
    "moduleid": 2,
    "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
    "parent": "0e216ebc38526920dcc17e5a69b2ef6f",
    "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": "13a5fd53f7187bdd24d1f6fa69bfa11d"
  },
  "source": "d3541070-8b0e-4663-8a6a-aa0727aacd36.b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175.8f3a47be-5629-4c66-921d-17c39ed07e87.10000000.2",
  "source_rule": "general.YARA Detection in Memory",
  "ts": 1774166301000
}

{
  "confidence": 0.925,
  "false_positive_reason": "Legitimate antivirus software (Bitdefender) triggered a generic Trojan detection rule. The process is located in its expected directory and is from a known security vendor, making it benign.",
  "investigation_questions": [
    "Is Bitdefender installed on this system?",
    "Has this process been running recently without user intervention?"
  ],
  "ioc_analysis": "The process path C:\\Program Files\\Bitdefender\\Bitdefender Security\\bdservicehost.exe matches known-good Windows application locations, and the executable is from a reputable antivirus vendor. Generic Trojan rules often flag legitimate security software as malicious due to behavioral patterns that mimic malware (e.g., memory usage, service spawning).",
  "iocs_extracted": [
    {
      "type": "process_path",
      "value": "C:\\Program Files\\Bitdefender\\Bitdefender Security\\bdservicehost.exe"
    },
    {
      "type": "rule_name",
      "value": "Windows_Trojan_Generic_9997489c"
    }
  ],
  "mitre_techniques": [],
  "recommended_actions": [
    "Close case as false positive (unanimous AI verdict)",
    "Allow the process in future detections",
    "Review and whitelist Bitdefender processes on this host",
    "Suppress generic Trojan rules for known security vendor binaries"
  ],
  "risk_score": 10,
  "severity": "informational",
  "summary": "**Vote: UNANIMOUS (2/2 -\u003e FALSE POSITIVE)**\n\n### \ud83e\udde0 dgx-122b Analysis (Primary)\nFailed or timed out.\n\n---\n\n### \ud83e\udd16 qwen3.5:4b Analysis (Secondary)\n**Verdict:** false_positive | **Confidence:** 0.95\nThe detection flagged Bitdefender\u0027s bdservicehost.exe as a Trojan, but the process is running from its expected location in Program Files and is signed by a known vendor. This is a classic false positive where legitimate security software triggers generic malware rules.\n\n**IOC Analysis:** The process path C:\\Program Files\\Bitdefender\\Bitdefender Security\\bdservicehost.exe matches known-good Windows application locations, and the executable is from a reputable antivirus vendor. Generic Trojan rules often flag legitimate security software as malicious due to behavioral patterns that mimic malware (e.g., memory usage, service spawning).\n\n---\n\n### \ud83e\udd16 deepseek-r1:8b Analysis (Secondary)\n**Verdict:** false_positive | **Confidence:** 0.9\nThe detection is likely a false positive as the process is part of Bitdefender antivirus software, running with SYSTEM privileges, which is typical for legitimate security tools.\n\n**IOC Analysis:** The FILE_PATH is located in the Bitdefender installation directory, which is a legitimate software location. No malicious hashes or signatures are provided, and it aligns with common false positive scenarios for antivirus processes.",
  "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 (low, 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"
  }
}