Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 446984c6e82fb80b…

MALICIOUS

Office (OLE) / .DOCX

189.5 KB Created: 2020-10-21 08:44:00 Authoring application: Microsoft Office Word
MD5: af0a81f64de86d32243175e4e8556d06 SHA-1: 8a4b8507e19a10d7588d133b79c301ee2b6ae2ef SHA-256: 446984c6e82fb80bf931ba816a5d3da71a7cc64172c4904f80b59f4fbb80346f
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified by ClamAV as 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0', strongly suggesting the Emotet family. Critical heuristics indicate a VBA macro with auto-execution capabilities ('Document_Open') and the use of 'CreateObject', typical for downloading and executing further stages. The presence of the 'macros.bas' artifact confirms the VBA macro's existence. The document body is obfuscated and unreadable, but the heuristics and ClamAV signature are sufficient for a high-confidence assessment.

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
1495f7c7ced0d5d67a50de030db1d404fcece38568f93b06e33d3100a17ee340		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20761 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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