Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 37d51be391145df8…

MALICIOUS

Office (OLE)

7.0 KB Created: 1995-10-17 15:47:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 410a2314f9842de19198a541185264a1 SHA-1: 9744bf02ef33da914507ab9a2027c1ea1571558e SHA-256: 37d51be391145df8e8f5c2721a1797c7173e2f86b3404dcb01e15ef0e91bcd3d
80 Risk Score

Malware Insights

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

The sample is an OLE file containing legacy WordBasic macros, indicated by the AutoOpen macro marker and the OLE_LEGACY_WORDBASIC_AUTOEXEC heuristic. The ClamAV detection as Win.Trojan.Hunter-2 further confirms its malicious nature. The presence of AutoOpen suggests an attempt to automatically execute code when the document is opened, a common technique for delivering secondary payloads.

Heuristics 2

  • ClamAV: Win.Trojan.Hunter-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Hunter-2
  • 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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