Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 13bffdfdae90ac90…

MALICIOUS

Office (OLE) / .DOCX

178.5 KB Created: 2020-10-26 12:50:00 Authoring application: Microsoft Office Word
MD5: 83892649e61cba0732ff416e6f056a82 SHA-1: 054d758af7e29dc3cc7100a0b9e2d464ecfaaa7b SHA-256: 13bffdfdae90ac9042f91b949bb000bb6ebabf040075c527d6dd88445ebd1b82
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject to execute obfuscated code. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9784039-0', strongly suggesting Emotet family. The VBA script's primary function appears to be downloading and executing a secondary payload, a common tactic for Emotet.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784039-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784039-0
  • 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
f1dc9112e8c9da061a4c5323ee9b2ea6b91271f7826b740d7f08af4c09fa4698		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15863 bytes

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