Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6c0ae95f51a00be8…

MALICIOUS

Office (OLE) / .DOCX

171.5 KB Created: 2020-10-21 13:56:00 Authoring application: Microsoft Office Word
MD5: dc3e77e9136870331b7f9bfef2ff63c1 SHA-1: 697857fe19f392eafa269915c4bd5162883fa94f SHA-256: 6c0ae95f51a00be8dfda2a6cb025bc98ffcabead12c246527001c4f3ba4097e2
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with a signature indicating it's an Emotet dropper. Heuristics confirm the presence of VBA macros, specifically a Document_Open macro that uses CreateObject, indicative of malicious execution. The VBA script itself is heavily obfuscated but its structure and the presence of the Emotet signature strongly suggest it's designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetUpdate1020-9778523-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetUpdate1020-9778523-0
  • 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
113d36c64715b3a3694b52821b832bd3a24df7013a1eebeaaceb4571875cbc4c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23319 bytes

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