Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 87ac4dca1021ffc0…

MALICIOUS

Office (OLE) / .DOCX

188.2 KB Created: 2020-09-16 18:57:00 Authoring application: Microsoft Office Word
MD5: d02f264720b0500e7a4fce5cfdc7208f SHA-1: afa6826762bbc8bc5e5c1b70b09ca85267a35b68 SHA-256: 87ac4dca1021ffc003e85e6d9bfc11ab6834031a1588e28b8bc7cb6e84274493
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The sample was detected by ClamAV as Doc.Downloader.Emotet-9762284-0, indicating a high likelihood of the Emotet family. Heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject. This suggests the macro is designed to download and execute a second-stage payload. The embedded URL, though benign according to reputation, is listed as a potential IOC.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9762284-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9762284-0
  • 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
c8eacd47a01532c076db7a43a0d927f95cb78ca92fb9fc841101993b58287d9b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19132 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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