Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 9e16a1c487318559…

MALICIOUS

Office (OLE) / .DOCX

154.3 KB Created: 2020-10-16 06:31:00 Authoring application: Microsoft Office Word
MD5: 34783c26ab0fd53fbcf4e5a0dfcf7204 SHA-1: 24489ff5e1705c0f6eba76426d106e750ddddf79 SHA-256: 9e16a1c487318559bca602d0c341d760109650549d600ab32ea6c5b07b9c838d
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection explicitly identifies the sample as 'Doc.Downloader.Emotet-9778460-0'. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject. This indicates the macro is designed to run automatically when the document is opened, likely to download and execute a secondary payload. The presence of the 'macros.bas' artifact further supports this. The document body content is heavily obfuscated and does not provide clear user-facing text, but the technical indicators strongly suggest a downloader functionality.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9778460-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778460-0
  • 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
d61a5c08d74b05c0be099936f48870810cfcd0fa95621c486c59e0d00fa9de51		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15430 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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