Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6d9cad95f8aa3d82…

MALICIOUS

Office (OLE) / .DOCX

187.3 KB Created: 2020-09-16 18:57:00 Authoring application: Microsoft Office Word
MD5: 48a5ecfb4d3d862a6e44cc11129e3cd5 SHA-1: 42be361a52e99b24073cfb1c3dd150b93fa7fb40 SHA-256: 6d9cad95f8aa3d8219f21391e294a8dedbde904308f501b7f4be63eb92a8dcf4
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for OLE_VBA_MACROS, OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate malicious VBA code designed to execute upon opening the document. The VBA macro's structure, particularly the `Document_open` subroutine and the use of `CreateObject`, suggests it is a downloader for a second-stage payload, consistent with Emotet's typical behavior.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9762284-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9762284-0
  • 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
c8eacd47a01532c076db7a43a0d927f95cb78ca92fb9fc841101993b58287d9b
vba-macro oletools.olevba.extract_macros (decoded VBA source) 19132 bytes