Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 09ab13ed5cc26d51…

MALICIOUS

Office (OLE) / .DOCX

219.0 KB Created: 2020-10-28 06:34:00 Authoring application: Microsoft Office Word
MD5: c05deb7ffa789461506a196d0ae3fca2 SHA-1: cd2ad7110e1c771e0df98aad595fb12c81f4f3c4 SHA-256: 09ab13ed5cc26d51e726e1121895e9887d1d2b3ac02edc6e7d86c73ada3ecf40
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with a specific Emotet signature. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject. The extracted VBA script confirms this, with the Document_open subroutine calling an obfuscated function that likely performs malicious actions. The presence of the 'macros.bas' artifact and the ClamAV detection strongly suggest Emotet.

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
5c8508b4422f9cf9f0517311e463bebb8a10b40538c4b01e1d12399253dacfe3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16608 bytes

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