Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6588df39b1cfd797…

MALICIOUS

Office (OLE) / .DOCX

188.5 KB Created: 2020-09-16 12:20:00 Authoring application: Microsoft Office Word
MD5: 4112b7ff720dff2e2b12e496d698584d SHA-1: fddab1921a52dd1632b49d342c33dcb29a1e5608 SHA-256: 6588df39b1cfd797af1644aedff24c2f62e80a5c800b8e8187becb4d8881c73d
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample is identified as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9762404-0', indicating a high likelihood of it belonging to the Emotet family. Static analysis revealed the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject', a common technique for executing malicious code. The VBA script, though obfuscated, appears to be designed to download and execute a secondary payload, a hallmark of Emotet's infection chain.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9762404-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762404-0
  • 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
49b4ebbf014fb7982286797412148a9d5a2325fbd8b23512b4e2381b987c3c86		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21867 bytes

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