OneNote.EXE Execution of Malicious Embedded Scripts

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About the rule

Rule Type

Standard

Rule Description

Detects the execution of malicious OneNote documents that contain embedded scripts. When a user clicks on a OneNote attachment and then on the malicious link inside the ".one" file, it exports and executes the malicious embedded script from specific directories.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND PARENTPROCESSNAME endswith "\onenote.exe" AND PROCESSNAME endswith "\cmd.exe,\cscript.exe,\mshta.exe,\powershell.exe,\pwsh.exe,\wscript.exe" AND COMMANDLINE contains "\exported\,\onenoteofflinecache_files" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

@kostastsale