Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7a09b43c9584200c…

MALICIOUS

Office (OLE) / .DOCX

162.2 KB Created: 2020-09-25 11:29:00 Authoring application: Microsoft Office Word
MD5: 57aa87edf47f8063f1fb64613a6f7ad5 SHA-1: 9b9461d73df465e43ecc5bb43819000cdaf53ac6 SHA-256: 7a09b43c9584200c30aae0470e3e9de4a2e6c09a6c3f3ff20eea41b0a2441825
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating malicious intent. ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9767804-1'. The VBA code is heavily obfuscated, but the presence of auto-execution macros and the CreateObject call strongly suggest it's designed to download and execute a secondary payload, consistent with Emotet's typical behavior.

Heuristics 6

  • 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.
  • 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