Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 10c403fa94671432…

MALICIOUS

Office (OLE) / .DOCX

221.5 KB Created: 2020-10-28 06:34:00 Authoring application: Microsoft Office Word
MD5: 4325fbf264369976d8e5b6aca5b6df7a SHA-1: e85d484d9e7b6de183df397281c1db507c6762fe SHA-256: 10c403fa94671432962dcf60d4e7facf2e4a9cd2c44964a9b16e6e79cc2625c5
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. Heuristics indicate the presence of VBA macros, specifically a Document_Open macro that uses CreateObject, suggesting an attempt to execute code automatically. The VBA script contains obfuscated functions and string manipulation, typical of Emotet, which likely aims to download and execute a second-stage payload.

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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