Sdiagnhost Calling Suspicious Child Process
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About the rule
Rule Type
Standard
Rule Description
Detects sdiagnhost.exe calling a suspicious child process (e.g. used in exploits for Follina / CVE-2022-30190)
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PARENTPROCESSNAME endswith "\sdiagnhost.exe" AND PROCESSNAME endswith "\powershell.exe,\pwsh.exe,\cmd.exe,\mshta.exe,\cscript.exe,\wscript.exe,\taskkill.exe,\regsvr32.exe,\rundll32.exe,\calc.exe") AND ((PROCESSNAME notendswith "\cmd.exe" OR COMMANDLINE notcontains "bits") AND (PROCESSNAME notendswith "\powershell.exe" OR COMMANDLINE notendswith "-noprofile -,-noprofile")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nextron Systems, @Kostastsale
