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

Static analysis result for SHA-256 b67bf3a8aba6b7d0…

MALICIOUS

Office (OLE)

13.5 KB Created: 1996-08-26 04:22:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 37c36a83e92e891b997c11be555bb340 SHA-1: f962bdd6ba86bf7db665187b16c236e19515b75d SHA-256: b67bf3a8aba6b7d0abfbea2ba60022c2865c0c6d48ac17c8aa6ffa8f3fe72bc1
80 Risk Score

Malware Insights

Win.Trojan.NPad-1 · confidence 90%

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

The file is identified as a legacy Word document containing an AutoOpen macro, a common technique for executing malicious code upon document opening. The heuristic 'OLE_LEGACY_WORDBASIC_AUTOEXEC' specifically flags the presence of an AutoOpen macro. ClamAV detection confirms this as Win.Trojan.NPad-1, indicating a known malicious variant. The document body contains references to 'AutoOpen' and file paths, further supporting the macro execution vector.

Heuristics 2

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