Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5dc4c3f58fab032d…

MALICIOUS

Office (OLE) / .DOCX

157.4 KB Created: 2021-01-12 22:19:00 Authoring application: Microsoft Office Word
MD5: bc41effbb8679a9e076aded6e0387523 SHA-1: 5ca2be30a9e8f294eb2af259237365e657ebf8db SHA-256: 5dc4c3f58fab032df0417e80aff4b59576063bf6de4933fb9c726823e26bfd0a
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample 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, a common technique for Emotet. The VBA script is heavily obfuscated but its structure and the presence of the Document_Open macro strongly suggest it's designed to download and execute a secondary payload.

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
f080f423f3af32bf8c04d24f919af2345f2f15905193e2101e5f7b51599e8466		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 7512 bytes

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