Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 bb0bd4259f7a68fc…

MALICIOUS

Office (OLE) / .DOCX

172.5 KB Created: 2020-10-26 07:07:00 Authoring application: Microsoft Office Word
MD5: d16e17a6e290816e4ef9a54f6ace2daf SHA-1: 4984f345d4ec7c6c5196ba5de5053a46ef8615ae SHA-256: bb0bd4259f7a68fcbea33a17f5f1694bed9d55db4c224ce81cbdc771c2ef3b90
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The critical ClamAV detection explicitly identifies this file as 'Doc.Downloader.Emotet-9783942-0'. Heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject, indicating it's designed to run malicious code upon opening. The presence of VBA macros and the Emotet family attribution strongly suggest the document's purpose is to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9783942-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9783942-0
  • 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
c68bd7af3cf9a50b88bbe135228cd5b393b6d0143e5a959d6b377f6063b17e65		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15733 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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