Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5a3856662e4cbb0a…

MALICIOUS

Office (OLE) / .DOCX

239.5 KB Created: 2020-10-28 10:47:00 Authoring application: Microsoft Office Word
MD5: 0e90d8cf0b859be7efc3fed0cef6e950 SHA-1: 2a6089324377d4040c9031e2573a29637110f781 SHA-256: 5a3856662e4cbb0a005a296d49553490ac6012c6d56158cdc1b75615410ad792
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample was detected as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9784450-1', indicating a known Emotet variant. High-severity heuristics confirm the presence of VBA macros, including a 'Document_Open' macro and 'CreateObject' calls, which are commonly used by Emotet to download and execute further malicious content. The VBA script itself is heavily obfuscated but the presence of 'CreateObject' and the auto-execution of 'Document_open' strongly suggest a downloader functionality.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
  • 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
46faaf06a16ada9e49d018565258705c67fc1202bb8b7fa1b6772e3ca9589e8c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17107 bytes

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