Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7a72109b0acc2550…

MALICIOUS

Office (OLE) / .DOCX

205.0 KB Created: 2020-10-28 12:00:00 Authoring application: Microsoft Office Word
MD5: 40d88fbb2fe3a90a62123951f447ad4d SHA-1: 0e0c6c2073ff2881a89353aaece634c40ace594d SHA-256: 7a72109b0acc2550c896a52c28eea9bbb2ad5f22579e0b57bd5f5fc2559cee90
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.Malware.Emotet-9784450-1'. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. The VBA script itself is heavily obfuscated but appears to construct a string for execution, likely to download and run a secondary payload. This is consistent with Emotet's typical behavior of using malicious documents to deliver further malware.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
  • 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
b98bc6262a06d3ed5a9ef1ffbdbcd180eadae66998aa40fa38b234fae6ec34b7
vba-macro oletools.olevba.extract_macros (decoded VBA source) 17061 bytes