Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 760ea4f40eb97c7d…

MALICIOUS

Office (OLE)

133.8 KB Created: 2020-10-14 19:03:00 Authoring application: Microsoft Office Word
MD5: 4438829c4ccac4e63483d8f321dbd258 SHA-1: 374e7d0cde7f503422020e7866e29f2c61fdf35b SHA-256: 760ea4f40eb97c7d6210b13d52fd6d6159b4ebfc38bec62527ab2931b526cf02
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 file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9778091-0', indicating it's likely an Emotet downloader. The presence of a Document_Open macro that uses CreateObject strongly suggests the execution of malicious code. The VBA script, though obfuscated, contains functions that appear to be designed to construct and execute commands, consistent with a downloader's behavior.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778091-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778091-0
  • 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
35ba581a7d07c242723817cd679240b29046cc2a7f4485862374591738596dda		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9454 bytes

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