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

Static analysis result for SHA-256 fd67284dc238e68f…

MALICIOUS

Office (OLE)

295.5 KB Created: 1997-01-06 14:35:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: c5db5f5c22c34e6925b5b045c72bcbf7 SHA-1: ab2aaf8a50c42f46c1c75ec43a108dc8657c2754 SHA-256: fd67284dc238e68ffa73e30e22b6bf6619a22d17469d5d0c88a6c1fd483cc3c4
80 Risk Score

Malware Insights

Win.Trojan.Nomvir-1 · confidence 90%

MITRE ATT&CK
T1059.005 Visual Basic

The critical ClamAV heuristic identified the file as Win.Trojan.Nomvir-1. Additionally, a legacy WordBasic AutoOpen macro marker was detected, indicating the presence of an AutoOpen macro. This macro is likely designed to execute malicious code automatically when the document is opened, a common technique for initial execution.

Heuristics 2

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