0xblack.dev Malware research · ARGUS
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ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161.js

Published 2026-08-03 06:28 UTC · ARGUS
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Summary

Verdict
SUSPICIOUS   confidence 75% (moderate)
SHA-256
ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161
Signals
executable-drop

Methodology

The sample was executed in an isolated, instrumented Windows VM (host-only networking with emulated C2 responses) while process, file-system, registry and network activity were recorded. The verdict is derived by correlating observed runtime behaviour with static indicators. No sample binary was uploaded or redistributed.

Dropped files (1)

MITRE ATT&CK

T1105 Ingress Tool Transfer / staged payload

Indicators of Compromise (defanged)

IOCs (JSON)

{
  "sha256": "ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161",
  "verdict": "suspicious",
  "confidence": 75,
  "signals": [
    "executable-drop"
  ],
  "attack": [
    "T1105"
  ],
  "dropped": [
    "C:\\Users\\lab\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161.js"
  ]
}
ARGUS · 0xblack.dev