Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9ce8f7664a271279…

MALICIOUS

Office (OLE)

158.5 KB Created: 1999-04-03 18:49:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: c623bac354ef798307e0d6714675dd33 SHA-1: e55a1607ad151b59a8c3741586621fecdd21f9d7 SHA-256: 9ce8f7664a271279b78477b6a4ffcd9fb8d6985f0dac632c910fd1c08f83ae6a
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as a legacy WordBasic auto-exec macro marker, specifically 'AutoClose', and is detected by ClamAV as Win.Trojan.Ctvck-2. The document body explicitly states it is a 'Macro Word Virus Construction Kit' and contains VBA code that appears to copy macros and potentially embed other viruses, as indicated by the 'MacroCopy' calls and the selection of different virus names like 'Win32.Emotion'.

Heuristics 2

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