Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 5281537f62ccec52…

MALICIOUS

Office (OLE)

12.0 KB Created: 1997-02-16 19:02:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 1a8f59d709468a14e36f6157d6d41db2 SHA-1: ead9ed6aa90fe4635e7b9f849e7f36a39dec0112 SHA-256: 5281537f62ccec526e71892a57f88d6b002d4485aa6cec49b29d6915270bd4b0
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is an OLE document containing legacy WordBasic macros, indicated by the AUTOOPEN marker and the OLE_LEGACY_WORDBASIC_AUTOEXEC heuristic. The presence of AUTOOPEN suggests automatic execution upon opening, a common technique for malware to download and execute further stages. ClamAV also detected this file as Win.Trojan.WMVH1-1, reinforcing its malicious nature.

Heuristics 2

  • ClamAV: Win.Trojan.WMVH1-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.WMVH1-1
  • 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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