Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0e8a845ad552f2a0…

MALICIOUS

Office (OLE) / .DOCX

172.2 KB Created: 2020-10-02 08:05:00 Authoring application: Microsoft Office Word
MD5: bb5c8efa6e12edd6db0106251cc91d37 SHA-1: ba92ed9bb25a0de2f4b27c5343ce2c6eff168871 SHA-256: 0e8a845ad552f2a0bdf75a1e2772429c8bf38c623b7bc43514c77c2a8c052c98
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 file is identified as malicious by ClamAV with a signature indicating it's an Emotet downloader. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject. The VBA script itself is heavily obfuscated, but the presence of CreateObject and the overall detection signature strongly suggest it's designed to download and execute a second-stage payload. The ClamAV detection name 'EmotetRed02224-9938637-0' directly points to the Emotet family.

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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