Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 a9f403e468c452e2…

MALICIOUS

Office (OLE) / .DOCX

191.3 KB Created: 2020-10-01 23:03:00 Authoring application: Microsoft Office Word
MD5: de50731dcf89d7b3f1e5c1e35da35f2a SHA-1: fd7f47319cf2f381ad61ad8a6aba213335a8c4c8 SHA-256: a9f403e468c452e2e87f9bb7fc347106f772f0a9aa8c36daeac0e2847a02a1c2
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a Document_Open macro that uses CreateObject suggests the script attempts to download and execute a second-stage payload. The ClamAV signature 'Doc.Downloader.EmotetRed02224-9938637-0' directly points to the Emotet family, known for its downloader capabilities.

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
6e0386e028be270039c4fe002fdf7015e999e4b27f1ccfca8c4209474f6ee6f3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10412 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 53 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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