Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 8184716f0f234f32…

MALICIOUS

Office (OLE) / .DOCX

162.0 KB Created: 2020-09-25 11:29:00 Authoring application: Microsoft Office Word
MD5: 9807d1a6346d391ac257bbbc4c6c0396 SHA-1: 8871aeeea5d459c35855ef51670fa7860135b80b SHA-256: 8184716f0f234f3296e458730d9d455caeecfdc39fd53ecb85372e504927d125
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, specifically a Document_Open macro that is auto-executing. This macro is designed to create and execute PowerShell commands, as indicated by the 'CreateObject' call and the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. The ClamAV detection name 'Doc.Downloader.Emotet-9767804-1' strongly suggests the Emotet family. The obfuscated PowerShell commands are likely responsible for downloading and executing a second-stage payload.

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.

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