Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0d25480f7fb0442c…

MALICIOUS

Office (OLE) / .DOCX

142.2 KB Created: 2020-09-25 16:17:00 Authoring application: Microsoft Office Word
MD5: 52aa8f346d3f5c05d90b82a9aa752caf SHA-1: ee1d273aae9f4e73456361a86f0dd26f7ee6e94e SHA-256: 0d25480f7fb0442cb9d124c3472aa09312193ef9dcdce9a31e29d3ff42cc9d02
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 was detected as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9768415-1', indicating a known downloader variant of the Emotet family. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject to likely initiate the download and execution of a secondary payload. The VBA script itself is heavily obfuscated but its structure and the detected heuristics strongly suggest its purpose is to download and run additional malware.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9768415-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9768415-1
  • 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
24dc32bb0bf265d759acaab1be69526609f3f4e182439affcdf3ab2add969ffb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17320 bytes

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