Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 86ac7048f50c87d0…

MALICIOUS

Office (OLE) / .DOCX

168.7 KB Created: 2020-10-20 06:24:00 Authoring application: Microsoft Office Word
MD5: a5216bdf49ebded97e866aaf1dcb4dc8 SHA-1: e13c5deb48428b069e835f88afc0f010d8a0570c SHA-256: 86ac7048f50c87d0174161d7d99e91381613dc2baa59b4c7b3a75174c1bf73ce
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The macro uses CreateObject to likely download and execute a second-stage payload. The ClamAV detection explicitly names Emotet, increasing confidence in the family attribution.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9780995-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780995-0
  • 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
9c144e4934aa06f4a846d3460cf32982827c1cabf227410ae75b7d2e86969ea7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17539 bytes

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