Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 627c23b11e6048db…

MALICIOUS

Office (OLE) / .DOCX

159.0 KB Created: 2020-10-26 20:02:00 Authoring application: Microsoft Office Word
MD5: 7da38ac717e8570ae0e03f8be4500b43 SHA-1: 2b3fd7f4ed22bfd20b11787bd4576b0113a0010d SHA-256: 627c23b11e6048db0ff6e2a44fc9bcd0555c4aedfd31ee768b764b084ecfa5c7
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample is a Microsoft Word document containing obfuscated VBA macros, including a Document_Open macro that uses CreateObject to execute code. ClamAV identifies this as 'Doc.Downloader.Emotet-9784039-0', strongly suggesting Emotet family. The VBA code is heavily obfuscated but the presence of a Document_Open macro and CreateObject calls indicates a downloader functionality, likely to fetch and execute a secondary payload.

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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