Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6bb96965fcd7c4ac…

MALICIOUS

Office (OLE) / .DOCX

158.2 KB Created: 2020-09-23 09:30:00 Authoring application: Microsoft Office Word
MD5: 66ea2e98594da33e7b53ab94ec6d9049 SHA-1: e5b2689ffd382bfb5e35815ebf45bd39327cb0cd SHA-256: 6bb96965fcd7c4acb3b22a1c3f1459a042c13a92860c474997aadfb217a905bc
242 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9765530-0', indicating it functions as a downloader. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject' and 'GetObject' calls. This suggests the macro is designed to execute code, likely to download and run a secondary payload. The presence of VBA macros points to the T1059.005 (Visual Basic) technique, and the downloader functionality aligns with T1105 (Ingress Tool Transfer). Given the ClamAV signature, the likely initial access vector is T1566.001 (Spearphishing Attachment).

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765530-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765530-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
f2279a4d422668b89c293cd032386976cc753a5ff4104c672bc17e53928a662a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20002 bytes

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