Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 11a15490c73f98ac…

MALICIOUS

Office (OLE) / .DOCX

141.7 KB Created: 2020-09-29 09:08:00 Authoring application: Microsoft Office Word
MD5: cec7be3f32f882833b269e7895c3bb65 SHA-1: 24f2c8f8c117614fac0630559043be035dae76a6 SHA-256: 11a15490c73f98ac1d0d1caa24d7643be4c4a1e8ccb97c68112844bbc1ec12f6
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9769137-0', indicating it is likely an Emotet downloader. The presence of a 'Document_Open' VBA macro and a 'CreateObject' call strongly suggests that the macro is designed to execute automatically when the document is opened. While the VBA code is heavily obfuscated, the overall structure and heuristic firings point to a downloader attempting to fetch and execute a secondary payload.

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

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