Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0b313ee83e1ee84f…

MALICIOUS

Office (OLE) / .DOCX

154.0 KB Created: 2020-10-19 09:55:00 Authoring application: Microsoft Office Word
MD5: 92a6ec617336153d7d809e90bd041c84 SHA-1: 823733dda473aaceb369598a414f662552ea3be7 SHA-256: 0b313ee83e1ee84fdd033f9fab31cebf4cc2a00b4679f12db3fb262a1e68ce85
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The ClamAV detection explicitly identifies it as Doc.Downloader.Emotet. The VBA script is heavily obfuscated but its presence and the auto-execution heuristic indicate it is designed to run malicious code upon opening the document, likely to download a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9780434-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780434-0
  • 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
1480f6f3dc12ae5544443e21682a29de409fc914bcdbfb39f5c72e71174c3bfb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15487 bytes

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