Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 ec811f99560c8f48…

MALICIOUS

Office (OLE) / .DOCX

209.7 KB Created: 2020-10-30 08:52:00 Authoring application: Microsoft Office Word
MD5: 6c459d9d7a41e6f710206ce4b040a200 SHA-1: 0f099246f483085504a232554ca2c579a77fd3fd SHA-256: ec811f99560c8f4860adfb72b96d3aaf41b3e36b3a80d2036a3e3b1048255d8d
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro within the document, coupled with the 'Doc.Downloader' classification, suggests the primary function is to download and execute a secondary payload. The obfuscated document body content does not provide further context on the lure, but the technical indicators are sufficient for a high-confidence assessment.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
3b4c2a22d0b516cd2d6141ac35df0fe0efc5e56c8812d3fa768461278bc89f15		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17545 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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