Win.Trojan.Minimal-53 — Office (OLE) malware analysis

Static analysis result for SHA-256 c227cf55aad12fb6…

MALICIOUS

Office (OLE)

88.0 KB Created: 1997-10-29 20:35:00 Authoring application: Microsoft Word for Windows 95 First seen: 2012-06-14
MD5: 7efe866d84369cbfd9708354569dfe30 SHA-1: 865277bf1fee0cdaa3ef098dfefe5e06a3ed973a SHA-256: c227cf55aad12fb643e873e440d3f958f2f77eba0ae212b6adc978c2a7a44dc2
82 Risk Score

Malware Insights

Win.Trojan.Minimal-53 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The sample is a legacy Office document containing a WordBasic AutoOpen macro, identified by the OLE_LEGACY_WORDBASIC_AUTOEXEC heuristic. This macro is designed to execute automatically upon opening the document, likely to download and execute a secondary payload from the embedded URL http://www.comptechdev.com/cavop/aoe/. The ClamAV detection further confirms its malicious nature.

Heuristics 3

  • ClamAV: Win.Trojan.Minimal-53 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Minimal-53
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.comptechdev.com/cavop/aoe/ In document text (OLE body)

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