Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 d3e012af393d0c31…

MALICIOUS

Office (OLE) / .DOCX

162.6 KB Created: 2020-09-25 11:29:00 Authoring application: Microsoft Office Word
MD5: 13a6c09ed14f03fb3dc90c063ac70e80 SHA-1: 462b2a9fb45092ab0d2b0440c5e6b65f99e9b67c SHA-256: d3e012af393d0c3110d710e9e5847ea22d96f727c9ac4f6aae00aca450a6a555
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The critical ClamAV heuristic identifies this file as Doc.Downloader.Emotet-9767804-1, a known Emotet downloader. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject. This indicates the macro is designed to run automatically upon opening the document. The presence of the 'macros.bas' artifact further supports this. The document body, though heavily obfuscated, appears to contain encoded strings that likely form part of the PowerShell command executed by the VBA macro, which is a common Emotet delivery technique.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9767804-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9767804-1
  • 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
426aca538f654441d66e245a00bfc928dacf37832bbf946df52799fa3650ecb1
vba-macro oletools.olevba.extract_macros (decoded VBA source) 24489 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.