Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6c73d0f17a9c1e3d…

MALICIOUS

Office (OLE) / .DOCX

172.5 KB Created: 2020-10-26 07:07:00 Authoring application: Microsoft Office Word
MD5: bf6e476901bc1aaa4fb2a3b8cd6183f8 SHA-1: 5413e3f833350c8480c74e661d7b2b2ba368c5bb SHA-256: 6c73d0f17a9c1e3d6139834005569d2622fcb6c0b85c46b91e924b0377e9d997
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common Emotet infection vector. The ClamAV detection explicitly names Emotet. The VBA script uses CreateObject and appears to be heavily obfuscated, likely to download and execute a secondary payload, a common tactic for Emotet.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9783942-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9783942-0
  • 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
c68bd7af3cf9a50b88bbe135228cd5b393b6d0143e5a959d6b377f6063b17e65		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15733 bytes

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