Suspicious parent spawning winrshost
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About the rule
Rule Type
Standard
Rule Description
Detects instances where the "winrshost.exe" is running, and not initiated by the expected "svchost.exe" parent process
Severity
Critical
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND ((PROCESSNAME endswith "Windows\System32\winrshost.exe" OR PROCESSNAME endswith "Windows\SysWow64\winrshost.exe" OR PROCESSNAME endswith "WINNT\system32\winrshost.exe") AND (PARENTPROCESSNAME notendswith "Windows\System32\svchost.exe" AND PARENTPROCESSNAME notendswith "Windows\SysWow64\svchost.exe" AND PARENTPROCESSNAME notendswith "WINNT\system32\svchost.exe"))
select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME,Action1.DOMAIN,Action1.ORIGINALFILENAME,Action1.PARENTPROCESSID,Action1.PROCESSID,Action1.PRODUCT_NAME,Action1.SECURITYID
Detection
Execution Mode
realtime
Log Sources
Windows
