Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 c3a3c4b5fe05e1ca…

MALICIOUS

Office (OLE) / .DOCX

174.9 KB Created: 2020-10-30 13:48:00 Authoring application: Microsoft Office Word
MD5: c3658e7dbf6d482e4a001f1128c94bde SHA-1: 50c0c3ca7f633b6714f5ce72929d20de1419bf7a SHA-256: c3a3c4b5fe05e1cabea15022173fa5a6f9fb05c83f0cb2d70441f0d415fb9405
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a Microsoft Word document containing a Document_Open VBA macro. This macro utilizes CreateObject and p-code auto-execution, strongly indicating malicious intent. The ClamAV detection and heuristic firings align with the Emotet family, known for its macro-based delivery. The macro likely downloads and executes a second-stage payload.

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
6ef446d7bbe59b96b37194ceef7dfc21ebc83ff1edf01838a31098c50a7e733f
vba-macro oletools.olevba.extract_macros (decoded VBA source) 17445 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.