Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6d43717aa6587cc1…

MALICIOUS

Office (OLE) / .DOCX

196.6 KB Created: 2020-09-24 13:34:00 Authoring application: Microsoft Office Word
MD5: 168323a55f7a82a940fd74bb1f4f32d9 SHA-1: 552296f51d047e3848061cdd111c52a6f08d112c SHA-256: 6d43717aa6587cc1a8d029dcad43de1a604e0e854bc22f651ca12066bc796713
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject to execute code. Heuristics and ClamAV detection strongly indicate this is an Emotet downloader. The obfuscated VBA script likely decodes and executes PowerShell commands, a common tactic for Emotet to fetch and run further stages.

Heuristics 6

  • 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.
  • 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
a837a74c15cb3b2b06d70805c30f06a3d350fde6faccbab7be73edc42a69bb80		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25402 bytes

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