Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6242af547edfc24b…

MALICIOUS

Office (OLE) / .DOCX

174.5 KB Created: 2020-10-20 19:38:00 Authoring application: Microsoft Office Word
MD5: 4777144979e0112e173db664120a1442 SHA-1: 5a9fea13cb7b8d80d5f51f3da517bd78dd56f670 SHA-256: 6242af547edfc24b0d1d59a0169dd8e612fab4d4ec5f56785ac1620bb52bc218
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The macro uses CreateObject to execute obfuscated VBA code. ClamAV detection also confirms the Emotet family. The primary function of the VBA script appears to be downloading and executing a second-stage payload, although the exact URL is obfuscated.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9781039-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9781039-0
  • 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
cc8c4959929e54bcaa17b9379ada4c4b2b5fe7ea894a71f152f85bce5d465abd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18782 bytes

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