Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 dad8170988a315cb…

MALICIOUS

Office (OLE)

121.2 KB Created: 2018-10-02 21:46:00 Authoring application: Microsoft Office Word First seen: 2018-10-19
MD5: 6cce3844ae7ae9cc8da0c5a2bd2842bc SHA-1: 41f165a10fd171f95b1ed658430a60a70bef54d2 SHA-256: dad8170988a315cb1ec7522c6b096f5ec9d96843daab4c086471f7d68f5a3362
84 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-6826541-0, strongly suggesting the Emotet family. The presence of a legacy WordBasic AutoOpen macro marker indicates an attempt to automatically execute malicious code upon opening the document. While VBA extraction failed, the ClamAV detection and the legacy macro marker are sufficient indicators of malicious intent.

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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