Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 11b6433cc50996ea…

MALICIOUS

Office (OLE) / .DOCX

129.6 KB Created: 2020-10-14 12:13:00 Authoring application: Microsoft Office Word
MD5: 7ba9e7c93a59d2ced1afe71e0e0a1853 SHA-1: 80fd66595a931cb447e3e3e2a31299386e6b8ab6 SHA-256: 11b6433cc50996eaa60f48be87ac8627f7ef22e82111415e743daee3d32b613a
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample was identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9778018-0. Static analysis revealed the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject to execute code. This macro is designed to download and execute a second-stage payload, a common behavior for Emotet. No specific download URLs were extracted, but the presence of the macro and the ClamAV signature strongly indicate this family and attack pattern.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778018-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778018-0
  • 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
9ff2f6164d63cd97fef8963d2b7a6ca348ed28032df5d8d3d018a1f3d500bd9b
vba-macro oletools.olevba.extract_macros (decoded VBA source) 9476 bytes