Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 79c4ef64a5bd86ea…

MALICIOUS

Office (OLE) / .DOCX

171.3 KB Created: 2020-10-02 08:05:00 Authoring application: Microsoft Office Word
MD5: 02f841d0296b566ac092f0774be5ea73 SHA-1: 3668bcc682533f64bc6164f339f51182a16598ce SHA-256: 79c4ef64a5bd86ea5330dbba8b204c4fa08923fb00364d7f312427db232c3ac1
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 is identified as malicious by ClamAV with the signature 'Doc.Downloader.EmotetRed02224-9938637-0', indicating a downloader. The presence of a 'Document_Open' macro that uses 'CreateObject' strongly suggests it's designed to execute code automatically. The VBA script, while obfuscated, contains typical patterns for downloading and executing further stages, consistent with Emotet's behavior.

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
7051a023ff8c92545e9437031d326fa9393a821a4be28f0566a57a8f3610dd93		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10600 bytes

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