Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0b9cb9b5ad70986b…

MALICIOUS

Office (OLE) / .DOCX

180.5 KB Created: 2020-10-21 10:22:00 Authoring application: Microsoft Office Word
MD5: 85b0d20ee509b5ab522bb9c4db9c0760 SHA-1: a1bf487692f736e44be080bdfa704298ef05f8a9 SHA-256: 0b9cb9b5ad70986bf8a1e178895ddb94bd3d7cb3edf2692bd9b40ee88bef3ac5
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initial execution. The ClamAV detection name 'Doc.Dropper.EmotetiBlueUpdate1020' strongly suggests Emotet. The VBA code uses CreateObject, a common method for launching malicious processes or downloading further stages. The presence of an embedded URL, though benign in this case, is typical for droppers.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
2d652a5f62c7cd7db265ab6f01298582724932c4485a1fde21ad075960ba4c72		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20722 bytes

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