Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 87a7289961845b4c…

MALICIOUS

Office (OLE) / .DOCX

154.2 KB Created: 2020-10-19 20:10:00 Authoring application: Microsoft Office Word
MD5: 06a3bbcf000c30791e853db4e7672afb SHA-1: 159bfbd6b492624a202e17fe47eb96778fb57973 SHA-256: 87a7289961845b4c5d06554d318aa51a1e4fc5aeb580d9dea164398d968caf14
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a DOCX file containing obfuscated VBA macros, including a Document_Open auto-execution macro. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9780400-0', strongly suggesting the Emotet family. The VBA code uses CreateObject and appears to be designed to download and execute a second-stage payload, indicated by the 'downloader' classification.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9780400-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780400-0
  • 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
2d3ce3834af78f24fa31a527ad1e694aefe01bd9c74b26ec94954a5af657ad56		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15599 bytes

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