Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 29a93fe65b8f0d9f…

MALICIOUS

Office (OLE)

134.4 KB Created: 2018-10-02 21:46:00 Authoring application: Microsoft Office Word First seen: 2018-11-05
MD5: d3a89f2e7e87510e6a140e80f476f2c4 SHA-1: a6bf570e60c44d5234d0a2f96996eddce6554143 SHA-256: 29a93fe65b8f0d9fd68000119faca4e10622a4c2f54763b3656f080b6d471aec
84 Risk Score

Malware Insights

Emotet · confidence 90%

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

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-6826541-0, strongly suggesting the Emotet family. A legacy WordBasic auto-exec macro marker (AutoOpen) was detected, indicating an attempt to execute code upon opening. Although VBA extraction failed, the presence of the marker and the ClamAV signature point to a macro-based downloader.

Heuristics 4

  • ClamAV: Doc.Downloader.Emotet-6826541-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6826541-0
  • 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.
  • Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTED
    olevba could not extract VBA macros (AssertionError); format-agnostic byte-level scans still ran. Likely legacy, encrypted, or malformed OLE/OOXML — re-scanning the same bytes will yield the same outcome.
  • 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://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)

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