Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 27bbc0a8e9269d59…

MALICIOUS

Office (OLE)

14.0 KB Created: 1999-05-13 14:23:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: b72a3d6a01d61a81ce0306a86955b41b SHA-1: 31d3c220741d8c15f88c8806484da391c5cf167d SHA-256: 27bbc0a8e9269d596b3d06ecc58a39f20a709d4c3552e9973a8dd746313d0517
80 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and contains legacy WordBasic auto-execution markers, specifically 'AutoOpen'. This indicates an attempt to run embedded macro code when the document is opened, a common technique for delivering malware. The presence of 'AutoOpen' suggests the macro is designed to execute automatically, likely to download and execute a secondary payload.

Heuristics 2

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