Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 bd21271de1d8e4df…

MALICIOUS

Office (OLE) / .DOCX

167.5 KB Created: 2021-01-05 17:50:00 Authoring application: Microsoft Office Word
MD5: 432fd63423b98d7865f60da6cea20942 SHA-1: 5c46e7528c7419ebf538664dddca20e184979435 SHA-256: bd21271de1d8e4dfdb4da98b571d82d8caa13fda29af457831138a2a988b5c9c
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1105 Ingress Tool Transfer

The file contains a VBA macro that is automatically executed upon opening, as indicated by the 'Document_Open' macro and 'CreateObject' call heuristics. The ClamAV detection 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests Emotet. The macro likely downloads and executes a second-stage payload, a common Emotet delivery technique. The embedded URL, though benign according to the analysis, is listed as an IOC due to its presence in the document.

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
4ad47f06387c2fe26b40af7c5c3febabd490580f16728c81acf291150b2fb0bb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10757 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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