Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 cbb3adf5cba7669a…

MALICIOUS

Office (OLE) / .DOCX

191.4 KB Created: 2020-10-01 13:24:00 Authoring application: Microsoft Office Word
MD5: 1d3fe9c51f33caa1be2babb1b8924ea9 SHA-1: 75fc3a06d3355be721676ad8b43e908c03cb886d SHA-256: cbb3adf5cba7669a3b642d6a7d8c97e772b4d6ff0b03f09288c207eb6fa35ed8
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, specifically a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly names this as 'Doc.Downloader.Emotet-9770099-0', and the heuristics confirm the presence of VBA p-code auto-execution with CreateObject calls. This suggests the macro is designed to download and execute a secondary payload, a common Emotet distribution technique. The document body content appears to be obfuscated or corrupted, providing no direct user-facing lure.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9770099-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9770099-0
  • 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
036fd4509daa7ddddbb4b351244a67d134d9405ade9668761579d4b986a83b62
vba-macro oletools.olevba.extract_macros (decoded VBA source) 10439 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.