Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5f21cb8fe8e76f93…

MALICIOUS

Office (OLE) / .DOCX

177.4 KB Created: 2020-10-20 22:39:00 Authoring application: Microsoft Office Word
MD5: 5c7a033971e56a0b28b95bee7dcb56db SHA-1: 98b01c98bf36baac75ad9a75a36c81577a678bd9 SHA-256: 5f21cb8fe8e76f9363dee1df0517de6b04e70c797c10a473a7acdd92048b1260
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-9781039-0. 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 its structure and the presence of CreateObject strongly suggest it's designed to download and execute a second-stage payload. This aligns with typical Emotet infection chains.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9781039-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9781039-0
  • 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
130bc91dd8b5ad391a87daabf287b6e2ceed1d78136a29ff57bedf25aa736586
vba-macro oletools.olevba.extract_macros (decoded VBA source) 18991 bytes