Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 71d96bc2d91359d6…

MALICIOUS

Office (OLE) / .DOCX

181.0 KB Created: 2020-10-21 10:22:00 Authoring application: Microsoft Office Word
MD5: 0e69bbf40f4b043dbb472bb2f79add0d SHA-1: dd96345ae5c45ae493e67d79634dd8d8508bff2a SHA-256: 71d96bc2d91359d628975432bbb1069677d816b7876e45e740e6c7a53f694043
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 uses CreateObject to execute obfuscated VBA p-code. This is indicative of a downloader or dropper functionality, consistent with the Emotet family. The ClamAV detection name also explicitly mentions Emotet. The primary IOC is the VBA macro file itself, which contains the malicious code.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
2d652a5f62c7cd7db265ab6f01298582724932c4485a1fde21ad075960ba4c72		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20722 bytes

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