Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 dac9204ec2d1eae3…

MALICIOUS

Office (OLE) / .DOCX

185.0 KB Created: 2020-10-21 05:24:00 Authoring application: Microsoft Office Word
MD5: a60d471e935439dea61f4c54f731ba41 SHA-1: 1e2219378706fb5fcbfa3bb1f3e6c9f4d3cf7df3 SHA-256: dac9204ec2d1eae3db8716f540b247c46b28ba5a9f4b75a0fe13c9014d25a9d3
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file contains a VBA macro that automatically executes upon opening, as indicated by the OLE_VBA_DOCOPEN and OLE_VBA_PCODE_AUTOEXEC_EXEC heuristics. The ClamAV detection name 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0' strongly suggests a dropper functionality, likely for Emotet. The macro's use of CreateObject further supports the execution of arbitrary code to download and install further malicious components.

Heuristics 7

  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
c2d782ff362afeab0ff3ffdb3997adeebbc3bedc56fb1ea2722e18a99469723b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20637 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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