Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 db4b755620492d66…

MALICIOUS

Office (OLE)

13.0 KB Created: 1999-01-07 17:37:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 231f4010f2bd1980fff0e272914e107c SHA-1: 3fc85419beabc73c3a3f3868e67381948500db84 SHA-256: db4b755620492d66eec3f278b4c0254264bc94556e1f7bf5f62e710500ec9946
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 auto-exec macros, specifically the 'aUtOoPeN' marker. This indicates an attempt to automatically run malicious code when the document is opened, a common technique for delivering malware. The ClamAV detection as Win.Trojan.Tiny-91 further supports its malicious nature. No specific family could be identified, and no direct IOCs like URLs or hashes were extracted from the provided evidence.

Heuristics 2

  • ClamAV: Win.Trojan.Tiny-91 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Tiny-91
  • 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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