Win.Trojan.Nuclear-3 — Office (OLE) malware analysis

Static analysis result for SHA-256 33e784d17e95cd7b…

MALICIOUS

Office (OLE)

22.0 KB Created: 1993-09-28 16:08:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 6dc16a834642d4272b0cd634886965fa SHA-1: 5cedee4d4cc2af2d50c60d310aed5022406f3fd6 SHA-256: 33e784d17e95cd7ba527c625cd551d20626f162326e98ea360b2862ce9b3d158
80 Risk Score

Malware Insights

Win.Trojan.Nuclear-3 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The critical ClamAV heuristic identified the file as Win.Trojan.Nuclear-3. Additionally, a medium severity heuristic detected a legacy WordBasic auto-exec macro marker (AutoOpen), indicating the potential for automatic execution of malicious code when the document is opened. The document body content appears to be unrelated boilerplate text.

Heuristics 2

  • ClamAV: Win.Trojan.Nuclear-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Nuclear-3
  • 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.