Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 a886955819a43158…

MALICIOUS

Office (OLE) / .DOCX

175.8 KB Created: 2020-10-20 21:25:00 Authoring application: Microsoft Office Word
MD5: 2f18dbcaceb1933c65cea1f516f9c2ba SHA-1: 78187c5ba54f90ff530d8afba039ac8c534b0932 SHA-256: a886955819a431586bb94b3b3960c906f5cdf2246de18906fbd6b469f021bf91
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious macro-based document. The presence of a VBA macro file named 'macros.bas' further supports this. The ClamAV signature 'Doc.Malware.Emotet-9781039-0' directly attributes this sample to the Emotet family. The document body content is heavily obfuscated and unreadable, but the macro execution is the primary indicator of malicious intent, likely to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9781039-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9781039-0
  • 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
71f866a5571402330f425e0ab90aed18ba72c53599dc9c41907ca6e320ae2301
vba-macro oletools.olevba.extract_macros (decoded VBA source) 18801 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.