Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 799ad9ba2f68222b…

MALICIOUS

Office (OLE) / .DOCX

140.1 KB Created: 2020-09-30 06:24:00 Authoring application: Microsoft Office Word
MD5: 6d5fb1f9f63a4bf2564619cb9022641c SHA-1: 39079e7e52dbae85179676541bdbf15ce1ad8d73 SHA-256: 799ad9ba2f68222b08e1a3728b0e9ec9ba943db3978c06ce8febd8e74f57a0d8
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The presence of a "Document_Open" macro and a "CreateObject" call within the VBA code strongly suggests malicious intent. The ClamAV detection as "Doc.Downloader.Emotet" further supports this, indicating the file is designed to download and execute additional malware. The obfuscated nature of the VBA script, with repeated, seemingly random calculations and function calls, is characteristic of Emotet's downloader modules.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9769539-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769539-0
  • 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
bf242d2b3eef8a928e95104450a1995792bbbbd70e8fa1b795dc489b41229ac6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10567 bytes

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