Change Winevt Channel Access Permission Via Registry
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About the rule
Rule Type
Standard
Rule Description
Detects tampering with the "ChannelAccess" registry key in order to change access to Windows event channel.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Registry value modified" AND ((OBJECTNAME contains "\Microsoft\Windows\CurrentVersion\WINEVT\Channels" OR (OBJECTNAME endswith "\Microsoft\Windows\CurrentVersion\WINEVT\Channels" AND isExist(OBJECTVALUENAME))) AND OBJECTNAME endswith "\ChannelAccess" AND INFORMATION contains "(A;;0x1;;;LA),(A;;0x1;;;SY),(A;;0x5;;;BA)") AND (PROCESSNAME != "C:\Windows\servicing\TrustedInstaller.exe" AND (PROCESSNAME notstartswith "C:\Windows\WinSxS" OR PROCESSNAME notendswith "\TiWorker.exe")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES
Detection
Execution Mode
realtime
Log Sources
Windows
Author
frack113
