Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 e070330805e94d23…

MALICIOUS

Office (OLE) / .DOCX

210.9 KB Created: 2020-10-16 06:01:00 Authoring application: Microsoft Office Word
MD5: abc51f324aef42a366604284f3d8c31a SHA-1: 4a6340df72bebe079eb78061e1c1cf9809479ddb SHA-256: e070330805e94d235412c1d54a2c6a015bc8732679f996cc34fc03b0f9ae1bce
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1140 Deobfuscate or Obfuscate

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious macro downloader. The garbled document body is a common lure to prompt users to enable macros. The presence of the 'EmotetRed' signature in the ClamAV detection further supports the Emotet family attribution. The extracted 'macros.bas' file and the embedded URL are key indicators of the payload delivery mechanism.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
3863408a8bdeee0ec9a7fd53b63559adf9564fc8373ad4e3bb83f95fe3393045		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15324 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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