Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 4d2101934458fea8…

MALICIOUS

Office (OLE)

11.0 KB Created: 1995-12-01 18:06:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 00c61647e8b9f45c43c181ee46f115d6 SHA-1: 644dd4c29703d1585e98571017715922103120ed SHA-256: 4d2101934458fea8b349b85d0ce15c7d033102092f23b8d2cd51eec71541b861
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is a legacy Word document containing a WordBasic auto-exec macro named 'aUToOpen'. This macro is designed to run automatically when the document is opened, indicating a likely attempt to execute malicious code. The presence of the 'CLAMAV_DETECTION' heuristic further confirms its malicious nature.

Heuristics 2

  • ClamAV: Doc.Trojan.MinSize-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.MinSize-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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