Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6b0ece604bfbf053…

MALICIOUS

Office (OLE) / .DOCX

163.7 KB Created: 2020-10-20 12:48:00 Authoring application: Microsoft Office Word
MD5: 144d540b1d5d24ebd7e4539b43ea65a2 SHA-1: 6643400dd154de0f4196d50fa461e81b283ce859 SHA-256: 6b0ece604bfbf0535b0a74c0781e484692e06279e3052e698775c07b56bac622
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The ClamAV detection explicitly names Emotet. The VBA code is heavily obfuscated but the presence of CreateObject and the auto-execution macro strongly suggest it's designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9780849-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780849-0
  • 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
a791bb7ba5242dbbc595d3114d3368d96d9feda91ba232c650f7097f210ce92c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17778 bytes

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