Potential Persistence Via Event Viewer Events.asp
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About the rule
Rule Type
Standard
Rule Description
Detects potential registry persistence technique using the Event Viewer "Events.asp" technique
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Registry value modified" AND (OBJECTNAME contains "\Microsoft\Windows NT\CurrentVersion\Event Viewer\MicrosoftRedirectionProgram,\Microsoft\Windows NT\CurrentVersion\Event Viewer\MicrosoftRedirectionURL" OR ((OBJECTNAME endswith "\Microsoft\Windows NT\CurrentVersion\Event Viewer" AND OBJECTVALUENAME startswith "MicrosoftRedirectionProgram") OR (OBJECTNAME endswith "\Microsoft\Windows NT\CurrentVersion\Event Viewer" AND OBJECTVALUENAME startswith "MicrosoftRedirectionURL"))) AND ((PROCESSNAME notendswith "C:\WINDOWS\system32\svchost.exe" OR (OBJECTNAME notendswith "\Microsoft\Windows NT\CurrentVersion\Event Viewer\MicrosoftRedirectionProgram" AND (OBJECTNAME notendswith "\Microsoft\Windows NT\CurrentVersion\Event Viewer" OR OBJECTVALUENAME != "MicrosoftRedirectionProgram")) OR INFORMATION != "%%SystemRoot%%\PCHealth\HelpCtr\Binaries\HelpCtr.exe") AND (PROCESSNAME notendswith "C:\WINDOWS\system32\svchost.exe" OR (OBJECTNAME notendswith "\Microsoft\Windows NT\CurrentVersion\Event Viewer\MicrosoftRedirectionProgramCommandLineParameters" AND (OBJECTNAME notendswith "\Microsoft\Windows NT\CurrentVersion\Event Viewer" OR OBJECTVALUENAME != "MicrosoftRedirectionProgramCommandLineParameters")) OR INFORMATION != "-url hcp://services/centers/support?topic=%%s") AND INFORMATION != "http://go.microsoft.com/fwlink/events.asp" AND INFORMATION != "(Empty)") select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
