Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 d0336326c8876a29…

MALICIOUS

Office (OLE)

15.5 KB Created: 1996-11-26 13:54:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 6b697a40f17580660dfa01cefa03eaeb SHA-1: eedf2c6b7cf999609b95b875479349a299446d58 SHA-256: d0336326c8876a2995bd6b9c9357b59f1cd5501a22f4497bf23e95eb383ac8f3
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample contains legacy WordBasic macros, specifically an AutoOpen macro, which is a strong indicator of malicious intent. The macro's content includes commands to format the C: drive and delete all files, indicating a destructive payload. The presence of the 'Win.Trojan.FormatS-1' ClamAV detection further supports the malicious classification.

Heuristics 2

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