Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 fb0b5027990aa1ae…

MALICIOUS

Office (OLE)

12.0 KB Created: 1997-04-27 14:37:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 5c1b704167c05c516923b68799de661f SHA-1: 70e4a10e3edc4d7f51df6b4776569c2b6dc3749e SHA-256: fb0b5027990aa1ae0881038c7964d34fdbe1648e54cd06670a8bf75a3080e421
80 Risk Score

Malware Insights

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

The file is a legacy Word document containing a WordBasic AutoClose macro, indicated by the OLE_LEGACY_WORDBASIC_AUTOEXEC heuristic. This macro is designed to execute automatically when the document is closed, a common technique for initiating malicious actions such as downloading and executing further stages. The ClamAV detection further supports its malicious nature.

Heuristics 2

  • ClamAV: Doc.Trojan.Helper-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Helper-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.