Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 03c21b6bcbe5fa49…

MALICIOUS

Office (OLE) / .DOCX

159.0 KB Created: 2020-10-26 20:02:00 Authoring application: Microsoft Office Word
MD5: b3950d960bbb2420caba1e7093c8d8cf SHA-1: 51c9ad9ca4c29200a59000ae142e8f8600df53ce SHA-256: 03c21b6bcbe5fa49917ab3be83b2d132ca4fed5fabfe944b25790964442b63e9
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. Heuristics indicate the use of CreateObject and p-code execution, further supporting this. ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9784039-0'. The obfuscated VBA script likely attempts to download and execute a second-stage payload, potentially using PowerShell, consistent with Emotet's behavior.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784039-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784039-0
  • 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
25a58c4e712d1085864e82f7ab775526ec6adf7a6a7c9b5168c373897e87509d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15931 bytes

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