Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 53894a66cb2c5b78…

MALICIOUS

Office (OLE) / .DOCX

160.6 KB Created: 2020-09-24 14:59:00 Authoring application: Microsoft Office Word
MD5: d82d60e5ef88f353d8159f60fefa8440 SHA-1: efc8cf9070a2f97d0b85f81b575df5ed1c4ab473 SHA-256: 53894a66cb2c5b7803247d709fb0ddd3352721e5b03c2a381085a5018a2eda0f
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9765780-0. Critical heuristics indicate a VBA auto-execution macro (Document_Open) that uses CreateObject, suggesting it's designed to run code upon opening. The presence of VBA macros and the Emotet family attribution strongly indicate a downloader functionality. The document body, though heavily obfuscated, appears to contain encoded strings that likely form part of the malicious script's execution chain, possibly involving PowerShell.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
  • 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
478e525c35da71173721eac25da86734da83f0768f80b277d373c9cc7716a5ba		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 27607 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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