Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 14b878d7208fdf92…

MALICIOUS

Office (OLE) / .DOCX

208.8 KB Created: 2020-12-22 21:50:00 Authoring application: Microsoft Office Word
MD5: 9511e0561e3c06840d0ea5208fc7ed46 SHA-1: ca59f9c9112904079fb92379940f925d74f6148b SHA-256: 14b878d7208fdf92d601e33a77f38b05f586c568ff44cf3e7e73b8b2e1dadad6
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 contains VBA macros, specifically a Document_Open auto-execution macro, which is a common technique for Emotet. The ClamAV detection name also strongly suggests Emotet. The VBA code is heavily obfuscated, but the presence of CreateObject and the auto-execution routine indicates it's designed to download and execute a secondary payload. The embedded URL was confirmed benign, so no IOCs were extracted from it.

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
b559ca2a4b6431779fe74d7481a6f916cab3c2b891432c5ee8c97f5a35ecea25		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15388 bytes

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