Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7657a3126475025d…

MALICIOUS

Office (OLE) / .DOCX

163.6 KB Created: 2020-10-20 12:48:00 Authoring application: Microsoft Office Word
MD5: 6337d8ec161178be9dea69bc4f0056d9 SHA-1: 42815247b3827e4fef228d1e1600581a83bb5ff7 SHA-256: 7657a3126475025d75847d7b8229b923bd019fa911a3ba7c26da3dce76f8aaba
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9780849-0, indicating it is likely part of the Emotet botnet. The presence of a VBA macro, specifically a Document_Open macro that uses CreateObject, strongly suggests it's designed to download and execute a secondary payload. The macro's obfuscated nature and the embedded URL point towards a downloader functionality.

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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