Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 4ea6a10f1ef889f6…

MALICIOUS

Office (OLE)

13.5 KB Created: 1999-02-07 15:35:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 5aa0c16b29455818b5c990f3f36446e5 SHA-1: b991699d8ff58a381d0474a642db32e9667972b5 SHA-256: 4ea6a10f1ef889f6ce86b13b91dd9b45decaa372511faac57e4d70ac7d0f630f
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.Over-1. Static analysis revealed a legacy WordBasic macro, specifically the 'AutoClose' auto-executing macro, which is a strong indicator of malicious intent. The macro's presence suggests it's designed to run automatically upon closing the document, likely to download or execute a secondary payload.

Heuristics 2

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