Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0a4df91739fd2a4d…

MALICIOUS

Office (OLE) / .DOCX

168.0 KB Created: 2020-10-26 10:57:00 Authoring application: Microsoft Office Word
MD5: 0a1a85de07648d4b024e1f30a1137011 SHA-1: f2e2010e7d367b42b11588f97b38e8c9c18e7b32 SHA-256: 0a4df91739fd2a4dafd1861bf4a39d3c637c38dedc0688d7c12e08b65c432681
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating malicious intent. ClamAV detection confirms it as Doc.Downloader.Emotet-9783962-0. The VBA script appears to be heavily obfuscated, but its structure suggests it's designed to download and execute a secondary payload, a common tactic for Emotet.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9783962-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9783962-0
  • 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
73da4e56546636c0246d24a128ee097e3f12e124f4b51048532455144fb1d70c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15915 bytes

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