Win.Trojan.Why-1 — Office (OLE) malware analysis

Static analysis result for SHA-256 2dfb7132d1bf52d9…

MALICIOUS

Office (OLE)

10.5 KB Created: 1996-10-02 05:06:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 724635b25555583f661352d221a48917 SHA-1: 05b8018fdf0763aa6a231fdad258367dc7ea88c1 SHA-256: 2dfb7132d1bf52d9064cf01fdeb637e1906595c3240ace852882a6ba3f86b3d7
80 Risk Score

Malware Insights

Win.Trojan.Why-1 · confidence 90%

MITRE ATT&CK
T1059.005 Visual Basic

The sample contains legacy WordBasic macros, indicated by the OLE_LEGACY_WORDBASIC_AUTOEXEC heuristic firing and the presence of 'AutoOpen' in the document body. This macro is designed to execute automatically when the document is opened, a common technique for initiating malware execution. The ClamAV detection name 'Win.Trojan.Why-1' further supports its malicious nature.

Heuristics 2

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