Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 17c83f382021e702…

MALICIOUS

Office (OLE) / .DOC

147.9 KB Created: 2020-10-16 06:52:00 Authoring application: Microsoft Office Word
MD5: c803620a367e4b683fb5aa5c008ad592 SHA-1: 3786a25a6d97e3b36a8249071f28a3df6b17a90e SHA-256: 17c83f382021e70207cc2a53a82c6ccc5115f91ffab1bbadf5712c9c6f6afe06
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. ClamAV detection confirms it as Doc.Trojan.Emotet-9778443-1. The VBA script is heavily obfuscated but its structure and the presence of CreateObject indicate it's designed to download and execute a second-stage payload, a common Emotet behavior.

Heuristics 6

  • ClamAV: Doc.Trojan.Emotet-9778443-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Emotet-9778443-1
  • 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
54ccb2978dc791799651cc6c51a326cfd57296c98b87fa2adc3d5b7f8b3276d7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15442 bytes

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