Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 15513b191f34ecc5…

MALICIOUS

Office (OLE) / .DOCX

143.2 KB Created: 2020-09-29 09:08:00 Authoring application: Microsoft Office Word
MD5: 1b18f4c0d61102bdaa105d7df9763af2 SHA-1: 909887afef51635ae1a6a6a862911d0c5397f49c SHA-256: 15513b191f34ecc5434e13d6ff1294840e3ca161628edc0caa89e89f6988f357
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The script utilizes CreateObject, indicating it's designed to execute arbitrary code, likely to download and run a secondary payload. The ClamAV detection explicitly names this as an Emotet downloader.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9769137-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769137-0
  • 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.
  • 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
2f5b3223d32b6b79c027453efef3c5410c27df5205b9cb2b32dd9a1e0304e007
vba-macro oletools.olevba.extract_macros (decoded VBA source) 8132 bytes