Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 c4649638862d5801…

MALICIOUS

Office (OLE) / .DOCX

183.2 KB Created: 2020-10-30 14:06:00 Authoring application: Microsoft Office Word
MD5: 93f7429df40b8259c0f2d93e6cafc9f8 SHA-1: 13de0b75e3cedf0e957fa6f931227ede4fed01e6 SHA-256: c4649638862d5801151aff557ca515260568cadbde4f09cc66f99133f5b5fe62
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically an auto-executing Document_Open macro using CreateObject, strongly indicate Emotet activity. The presence of a VBA macro in the macros.bas file, combined with the detection name, confirms the malicious intent to download and execute a secondary payload. The document body content is heavily obfuscated and unreadable, providing no additional context.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9785300-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9785300-0
  • 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
953bcc7800f8e12231199058de4be56a41e5df3186000111c4b5440de64866f2
vba-macro oletools.olevba.extract_macros (decoded VBA source) 17395 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.