Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 731c494ee06a5fe1…

MALICIOUS

Office (OLE) / .DOCX

157.4 KB Created: 2020-10-20 04:30:00 Authoring application: Microsoft Office Word
MD5: 9d7b76027271f32735fa07dbde5becd4 SHA-1: ecb527da66fe7b1ec02f7161f5a1f58d47880f49 SHA-256: 731c494ee06a5fe125c88bd6c5962d440734d6237fd8dd68d3fae0950cdb153d
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a Microsoft Word document containing VBA macros, specifically a Document_Open macro that uses CreateObject, indicative of malicious activity. ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9780400-0'. The VBA macro code, though obfuscated, suggests it is designed to download and execute a second-stage payload. The presence of VBA macros and the Emotet family attribution strongly suggest a spearphishing attachment attack vector.

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
bec182db065394791f950a49edfb2bfa66cb6693b62758841681c782964c8b6d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15615 bytes

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