Winlogon Notify Key Logon Persistence
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About the rule
Rule Type
Standard
Rule Description
Adversaries may abuse features of Winlogon to execute DLLs and/or executables when a user logs in. Winlogon.exe is a Windows component responsible for actions at logon/logoff as well as the secure attention sequence (SAS) triggered by Ctrl-Alt-Delete.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Registry value modified" AND (OBJECTNAME endswith "\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\logon" OR (OBJECTNAME endswith "\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify" AND OBJECTVALUENAME = "logon")) AND INFORMATION endswith ".dll" select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES
Detection
Execution Mode
realtime
Log Sources
Windows
Author
frack113
