Allow Service Access Using Security Descriptor Tampering Via Sc.EXE
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About the rule
Rule Type
Standard
Rule Description
Detects suspicious DACL modifications to allow access to a service from a suspicious trustee. This can be used to override access restrictions set by previous ACLs.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PROCESSNAME endswith "\sc.exe" OR ORIGINALFILENAME = "sc.exe") AND (COMMANDLINE contains "sdset" AND COMMANDLINE contains "A;") AND COMMANDLINE contains ";IU,;SU,;BA,;SY,;WD" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
