Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 52fb764db35c295e…

MALICIOUS

Office (OLE)

12.5 KB Created: 1996-10-26 01:48:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: cccee774a591ee42fd636e948ae1d2ac SHA-1: f98c29fdde8f0c34f87bbddbc4780e4b55743c6f SHA-256: 52fb764db35c295efba3eb81caaf4f99a1d66f231828ef465e554fbf560ca627
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Win.Trojan.TWNO-1. Static analysis revealed a legacy WordBasic AUTOOPEN macro, which is a known indicator of malicious activity in older Office documents. The presence of the AUTOOPEN marker strongly suggests the document is designed to automatically execute embedded code when opened.

Heuristics 2

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