Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5f716490d2b5e644…

MALICIOUS

Office (OLE) / .DOCX

131.8 KB Created: 2020-09-28 15:20:00 Authoring application: Microsoft Office Word
MD5: 8e81e14608d82d86e6fbf46e8e1556b6 SHA-1: b93a019b7e33372008778e2c6606d385fdaa878f SHA-256: 5f716490d2b5e6446b389056613474e3ce5a94a15bf6530b84f9c0867da01a28
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with a specific Emotet signature. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject to execute code. The extracted VBA script confirms the presence of obfuscated code and the use of CreateObject, typical for Emotet's downloader functionality. The script likely constructs and executes a command to download a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9768661-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9768661-0
  • 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
2ce77a90790088f293710a707301ae69bfebe17386d7804fba58a5e382e47c64		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6657 bytes

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