Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 022c542c4f534efc…

MALICIOUS

Office (OLE) / .DOCX

178.5 KB Created: 2020-10-27 08:32:00 Authoring application: Microsoft Office Word
MD5: f70924be7bafbbee27dc8b183c5d9576 SHA-1: 81b82d35a6c9b93db6fe8d9860e79a5b49075cf6 SHA-256: 022c542c4f534efca7d03792999a8b9d8f46101a543cea780bef369ea4bbd9fa
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 contains VBA macros, specifically a Document_Open macro, which is a strong indicator of malicious intent. The ClamAV detection and heuristic firings for CreateObject and p-code execution suggest the macro is designed to download and execute a secondary payload. The embedded URL, although benign, is present, and the macro itself is a common delivery mechanism for Emotet.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
  • 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
baddc5814f280b1183f5ed27ce7fb5b9c59037bb5bb89b6abd277ce8e9a0cbe5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15918 bytes

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