Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 603619e4d81dda77…

MALICIOUS

Office (OLE) / .DOCX

154.4 KB Created: 2020-10-16 10:17:00 Authoring application: Microsoft Office Word
MD5: 53a79d642a8552f39021adc01ee45d41 SHA-1: 3eb38ecda794a4fb5a7ae7c35374b25f1f207037 SHA-256: 603619e4d81dda77197d6ff40406a6f101a494901653c22f181ecb7be55111d6
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 is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9778520-0. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. The VBA script itself is heavily obfuscated but its structure and the presence of a downloader signature strongly suggest it is designed to fetch and run a secondary payload. The embedded URL, though benign, is a common pattern for initial document content.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778520-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778520-0
  • 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
d61826c134f7c008e59a413c892ffd79c11195763d747a6092f6a3ad25ed6af3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15346 bytes

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