Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 25f4749bcb427e07…

MALICIOUS

Office (OLE) / .DOCX

163.3 KB Created: 2020-10-01 15:57:00 Authoring application: Microsoft Office Word
MD5: d279e8d320e68e0b1e8d700cd1e38786 SHA-1: 9f5cc6eda172e52166ca10ec8c7fc76f045fdc03 SHA-256: 25f4749bcb427e0730638cf23b3bfaee1e5d927e929b35f7e4f980f169196b5d
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9770197-0'. Static analysis detected VBA macros, specifically a 'Document_Open' macro that uses 'CreateObject' and p-code auto-execution, indicating it's designed to run code automatically when the document is opened. This strongly suggests a macro-based malware delivery, consistent with Emotet's typical behavior of downloading and executing further stages. No specific URLs were extracted, but the presence of the 'macros.bas' file is a key indicator.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9770197-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9770197-0
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
34626713db5720b3147c8823fb8dfd0fe34a12fce4df5a0aa65f24e3eab9d078		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10368 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 53 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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