Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 ba2bc32f4daa30fd…

MALICIOUS

Office (OLE) / .DOCX

191.7 KB Created: 2020-12-21 21:21:00 Authoring application: Microsoft Office Word
MD5: 67bb0396ea14a1dce262763d43c0f861 SHA-1: 27126b32a9e3f29afc00348215c175fe3289d657 SHA-256: ba2bc32f4daa30fda2e05c5960a6a160167101889384e98690e6abbeff973434
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open macro that uses CreateObject, indicating it's designed to execute automatically upon opening. ClamAV identifies this as Emotet. The document body, though obfuscated, suggests a lure related to a Word error, likely to prompt the user to enable macros. The primary function of the macro is to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-10024800-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10024800-0
  • 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
8aae0e70694468f75c3b71f11fefc9e062894c6e53b1f2a4dd3530766c509e7d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10278 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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