Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 33c804fd01b23e7d…

MALICIOUS

Office (OLE)

131.4 KB Created: 2018-10-02 15:51:00 Authoring application: Microsoft Office Word First seen: 2019-05-16
MD5: c026065d562a240238d656b54bbdda77 SHA-1: c40f240de19e5306f438b3549f6e67fc7e29b319 SHA-256: 33c804fd01b23e7d8b011874183412572787fe54dd5fba3bc8f1db19ef211cb1
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-6883995-0', strongly suggesting the Emotet family. The presence of a legacy WordBasic AutoOpen macro marker indicates an attempt to automatically execute malicious code upon opening. Although VBA extraction failed, the ClamAV detection and macro marker point to a downloader functionality, likely used to retrieve and execute further payloads.

Heuristics 4

  • ClamAV: Doc.Downloader.Emotet-6883995-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6883995-0
  • 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)