Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0c850e85bc3e92d0…

MALICIOUS

Office (OLE) / .DOCX

171.3 KB Created: 2020-09-22 18:42:00 Authoring application: Microsoft Office Word
MD5: 47f24213ea2928832ab4a3d2f2bc0a08 SHA-1: d4dbdade81cc1af9954eeb86299a14a0ae141fdd SHA-256: 0c850e85bc3e92d0551863e1ce5cd03c3c3404ceeb7e38aed586706c4134f4a2
242 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. Heuristics indicate the use of CreateObject and GetObject, suggesting dynamic code execution. The ClamAV detection explicitly names Emotet, reinforcing the family attribution. The VBA script is heavily obfuscated but its structure and the presence of Document_Open indicate it is designed to download and execute a secondary payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765458-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765458-0
  • 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
4c1d45ab400998e9849e03fb488749a88ec1375f45fc179ad034e6ee3d25ecfd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21065 bytes

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