Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 71c73b1d88d50e29…

MALICIOUS

Office (OLE) / .DOCX

181.5 KB Created: 2020-10-27 09:55:00 Authoring application: Microsoft Office Word
MD5: 0525c3317be9caf81cffd0e3100050cb SHA-1: 8128c4eb783a7c1481bdb1bbeb5ed5668e4a4b03 SHA-256: 71c73b1d88d50e2982f5f633cf03be4da68db518fcf131f2f22787aa0cd54650
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. ClamAV detection identifies it as Emotet, a known downloader. The VBA code is heavily obfuscated but appears to be designed to download and execute a second-stage payload, a common Emotet behavior.

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
d266e0e433b4f1ca206b8db182ee793bd3229a389f65ad6b52e9aace0436fd0a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15938 bytes

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