Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 685fbcffb0a52753…

MALICIOUS

Office (OLE) / .DOCX

196.6 KB Created: 2020-09-21 22:06:00 Authoring application: Microsoft Office Word
MD5: dd9ce291768cf5e518211e8fbb8b21c2 SHA-1: 39a4baa2d9f958a7d76711765b283419f046f12f SHA-256: 685fbcffb0a52753c740e16c5102e95d81537f0dc8f375d677b2aeb0f05eede1
242 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a Microsoft Office document containing a VBA macro that is automatically executed via the Document_Open subroutine. Heuristics indicate the use of CreateObject and GetObject, common for malware execution. ClamAV detection explicitly identifies it as Emotet. The VBA script is heavily obfuscated but its structure and the presence of Document_Open strongly suggest it's designed to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9765425-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9765425-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
3f69d910c7ab65b68002c6115856f94d0a2fe7883066824f7d890ec0735d30db		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19084 bytes

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