high investigating false positive

๐Ÿท๏ธ Analyst Verdict Classification

๐Ÿค– AI Analysis

๐Ÿ”” Detections (1)

YARA Detection on Disk - Macos_Infostealer_Wallets_8e469ea0 high
Rule: general.YARA Detection on Disk
Hostname: desktop-atsepsk ยท Sensor: 8f3a47be-5629-4c...
Event Type: YARA_DETECTION
Confidence: 53% ยท Verdict: false positive
Event Data:
FILE_PATH:
C:\Program Files (x86)\Microsoft\Edge\Application\148.0.3967.83\msedge.dll
RULE_NAME:
Macos_Infostealer_Wallets_8e469ea0
Analyst Declaration:
๐Ÿ“„ Raw Detection JSON
{
  "author": "ckeller@fusioncybersecurity.us",
  "cat": "YARA Detection on Disk - Macos_Infostealer_Wallets_8e469ea0",
  "detect": {
    "event": {
      "FILE_PATH": "C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\148.0.3967.83\\msedge.dll",
      "RULE_NAME": "Macos_Infostealer_Wallets_8e469ea0"
    },
    "routing": {
      "arch": 2,
      "did": "",
      "event_id": "856922a2-ca7b-4760-ace7-41c131a7f24e",
      "event_time": 1779539575382,
      "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": 433,
      "moduleid": 2,
      "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
      "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": "c9ff6930a79345846083ba6f6a119e77"
    }
  },
  "detect_id": "0849c2b9-910b-4cad-8a66-de246a119e77",
  "gen_time": 1779539575815,
  "link": "https://app.limacharlie.io/orgs/d3541070-8b0e-4663-8a6a-aa0727aacd36/sensors/8f3a47be-5629-4c66-921d-17c39ed07e87/timeline?time=1779539575\u0026selected=c9ff6930a79345846083ba6f6a119e77",
  "namespace": "general",
  "routing": {
    "arch": 2,
    "did": "",
    "event_id": "856922a2-ca7b-4760-ace7-41c131a7f24e",
    "event_time": 1779539575382,
    "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": 433,
    "moduleid": 2,
    "oid": "d3541070-8b0e-4663-8a6a-aa0727aacd36",
    "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": "c9ff6930a79345846083ba6f6a119e77"
  },
  "source": "d3541070-8b0e-4663-8a6a-aa0727aacd36.b2cd59fc-d09d-49e0-a9f2-1fd79ee9c175.8f3a47be-5629-4c66-921d-17c39ed07e87.10000000.2",
  "source_rule": "general.YARA Detection on Disk",
  "ts": 1779539575000
}
๐Ÿค– Triage JSON
{
  "confidence": 0.533,
  "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": 30,
  "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:** 0.8\nThe detection of msedge.dll matches a historical pattern of false positives. No suspicious activity was found in the recent process ancestry.\n\n**IOC Analysis:** The file path is consistent with legitimate Microsoft Edge installation. The hash and signature are not provided, but the file is likely benign.\n\n---\n\n### \ud83e\udd16 deepseek-r1:16b Analysis (Secondary + RAG)\n**Verdict:** false_positive | **Confidence:** 0.8\nThe detection event for msedge.dll in the specified file path is likely a false positive. The file is a legitimate Microsoft Edge binary located in the expected Program Files directory. No suspicious activity was found during the investigation.\n\n**IOC Analysis:** The file path C: Program Files (x86) Microsoft Edge Application 148.0.3967.83 msedge.dll is a known legitimate binary from Microsoft. The file is signed and matches expected patterns for system binaries.\n\n---\n\n### \ud83e\udd16 gemma3:4b Analysis (Secondary)\nFailed or timed out.",
  "verdict": "false_positive",
  "voting": {
    "auto_action": "manual_review",
    "mode": "majority",
    "total_models": 3,
    "vote_summary": [
      "qwen3.5:35b: true_positive (medium, 0% confidence)",
      "qwen3.5:4b +RAG: false_positive (low, 80% confidence)",
      "deepseek-r1:16b +RAG: false_positive (informational, 80% confidence)"
    ],
    "votes": [
      {
        "confidence": 0.0,
        "model": "qwen3.5:35b",
        "verdict": "true_positive"
      },
      {
        "confidence": 0.8,
        "had_rag": true,
        "model": "qwen3.5:4b",
        "verdict": "false_positive"
      },
      {
        "confidence": 0.8,
        "had_rag": true,
        "model": "deepseek-r1:16b",
        "verdict": "false_positive"
      }
    ],
    "winning_count": 2,
    "winning_verdict": "false_positive"
  }
}

โš™๏ธ Response Actions

Action Target Status Result
tag 8f3a47be-5629-4c66-921d-17c39ed07e87:fusionsoc-investigated executed Tag applied
recommended Manual review required executed General Activity Sweep: 0 events found

๐Ÿ“ Add Note

๐Ÿ’ฌ Notes (3)

๐Ÿค– FusionSOC AI 2026-05-23T12:38
๐Ÿค– FusionSOC AI 2026-05-23T12:38
๐Ÿค– FusionSOC AI 2026-05-23T12:38

๐Ÿ“œ Timeline

2026-05-23T12:38:57
FusionSOC AI
Note by FusionSOC AI: ## ๐Ÿ—ณ๏ธ Secondary Vote (RAG-Enhanced) **Vote:** MAJORITY (2/3 โ†’ FALSE POSITIVE) - qwen3.5:35b: true_positive (medium, 0% ...
2026-05-23T12:38:39
FusionSOC AI
Status changed: open โ†’ investigating
2026-05-23T12:38:39
FusionSOC
Action recommended โ†’ executed: General Activity Sweep: 0 events found
2026-05-23T12:38:39
FusionSOC AI
Note by FusionSOC AI: ## ๐Ÿ” General Activity Sweep **Action:** Manual review required **Sensor:** `8f3a47be-5629-4c...` **Time Window:** +/- 2 ...
2026-05-23T12:38:39
FusionSOC
Response action queued: recommended on Manual review required
2026-05-23T12:38:39
FusionSOC
Action tag โ†’ executed: Tag applied
2026-05-23T12:38:39
FusionSOC
Response action queued: tag on 8f3a47be-5629-4c66-921d-17c39ed07e87:fusionsoc-investigated
2026-05-23T12:38:38
FusionSOC AI
Detection 0849c2b9-910b-4cad-8a66-de246a119e77 triaged as true_positive (medium severity, confidence: 0%)
2026-05-23T12:38:38
FusionSOC AI
Case created from detection: general.YARA Detection on Disk