Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 2519f67b350476b6…

MALICIOUS

Office (OLE) / .DOCX

161.8 KB Created: 2020-09-25 11:29:00 Authoring application: Microsoft Office Word
MD5: 9d300e529e76b1a214ba7fd11417b1bc SHA-1: 6992d11bb596a4f936cfc88790dbcf716259b8d9 SHA-256: 2519f67b350476b6d570de0011835354d854288a9fec3a2e734a2843de12393c
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open auto-exec macro, which is designed to run automatically when the document is opened. This macro utilizes CreateObject to execute a PowerShell command. The ClamAV detection and heuristic firings strongly indicate this is an Emotet downloader. The document body appears to be heavily obfuscated or corrupted, but the presence of the VBA macro and its execution of PowerShell are clear indicators of malicious intent.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9767804-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9767804-1
  • 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
426aca538f654441d66e245a00bfc928dacf37832bbf946df52799fa3650ecb1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 24489 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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