Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 912e6b82fee5f9b6…

MALICIOUS

Office (OLE) / .DOCX

201.1 KB Created: 2020-09-25 06:51:00 Authoring application: Microsoft Office Word
MD5: 948f591ca0825a6298b648bf4eccbefb SHA-1: f8001b5d311b0d6de41bcdccac9821439ea5f45a SHA-256: 912e6b82fee5f9b6770150fa456e40051bfae0d70f696e3cde2b0c82e9a1f891
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for VBA macros, including auto-execution via Document_Open and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro named 'macros.bas' and the detection as 'Doc.Downloader.Emotet' further support this. The document body, though heavily obfuscated, appears to be an attempt to disguise the execution of PowerShell commands, likely for downloading and executing a secondary payload, which is a common Emotet tactic.

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
d802c65eb8f9df036cf46e9408744e30c5d95dae54b582b9f65ecb84ecb28fa8		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25261 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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