Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 73620e838eb9f25f…

MALICIOUS

Office (OLE) / .DOCX

189.4 KB Created: 2020-09-18 14:02:00 Authoring application: Microsoft Office Word
MD5: 4996087e64fc817d1fa8c555b64a70ab SHA-1: 4fd66c143dff428902c3a2bb06904ed6e5f4ddc9 SHA-256: 73620e838eb9f25fb84489e5a9b183790be59e762fb7aa8cd65a6958e83a00c0
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9763588-0', indicating it's a downloader for the Emotet family. Heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject, a common technique for executing malicious code. No URLs or specific commands were directly extracted from the script, but the presence of the macro and the ClamAV signature strongly suggest its purpose is to download and execute a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9763588-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9763588-0
  • 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
439e57830647c2aa4289de5e25d2759440b9e1601599acc03def2897db1f3da9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20114 bytes

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