Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 70a35d75979116a3…

MALICIOUS

Office (OLE) / .DOCX

163.0 KB Created: 2020-10-16 14:09:00 Authoring application: Microsoft Office Word
MD5: 4e4e66d10c9b6e01af545f82aa6ed356 SHA-1: 653cd4cad5005930237de4736fa885fa04e6804e SHA-256: 70a35d75979116a3deb5a05fd800b019ce1a1e3cfa73a22c3e547f5fdfc702d6
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open macro and CreateObject heuristic firings. The ClamAV detection name 'Doc.Malware.Emotet-9778566-0' strongly suggests the Emotet family. The VBA code is heavily obfuscated, but its structure and the presence of auto-execution routines are typical for Emotet's initial payload delivery mechanism, which often involves downloading and executing further stages.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9778566-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9778566-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
29095f417e940309e4c3b74017a13ff70f85d23507d6b5296a03fa98c635a78b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15315 bytes

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