Win.Trojan.Crow-3 — Office (OLE) malware analysis

Static analysis result for SHA-256 6491ecd170e5fdd5…

MALICIOUS

Office (OLE)

27.0 KB Created: 1997-12-31 17:52:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 4ca1a549075050d5efffff6094ecfb9f SHA-1: c18c2fc16ed6fffd1a06892cd16976ffc43a5660 SHA-256: 6491ecd170e5fdd58bfe5ca90d7fef208b3645a2f6ace5c22a7d9d73120c6c9e
80 Risk Score

Malware Insights

Win.Trojan.Crow-3 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Win.Trojan.Crow-3. It contains a legacy WordBasic auto-exec macro named 'autoOpen', which is a known indicator for malicious macro execution. The macro's presence suggests an attempt to run arbitrary code when the document is opened, likely for further system compromise.

Heuristics 2

  • ClamAV: Win.Trojan.Crow-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Crow-3
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.

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