Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 11b7cce663e70bde…

MALICIOUS

Office (OLE) / .DOCX

145.6 KB Created: 2020-09-30 13:54:00 Authoring application: Microsoft Office Word
MD5: 32eaa6765a5b29a740076a09398ed9a4 SHA-1: 4f12c4708467c1af39f29f93e5ea446759912e3b SHA-256: 11b7cce663e70bde75cbf0b81b54ab96d97eac177d58c0abbc44f8c250854a8c
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 macro that executes obfuscated code. This macro utilizes CreateObject, a common technique for Emotet to download and execute further stages. The ClamAV detection explicitly names Emotet, reinforcing this family attribution. The obfuscated nature of the VBA code suggests an attempt to hide its malicious intent, likely to download and execute a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9769801-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9769801-1
  • 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
b0a96d5f70fa37f74dd6926b04c01f24a02f2a82bef41b3183b9207cf3a20fca		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10253 bytes

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