HackTool - KrbRelayUp Execution

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About the rule

Rule Type

Standard

Rule Description

Detects KrbRelayUp used to perform a universal no-fix local privilege escalation in Windows domain environments where LDAP signing is not enforced

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (PROCESSNAME endswith "\KrbRelayUp.exe" OR ORIGINALFILENAME = "KrbRelayUp.exe") OR (COMMANDLINE contains " relay " AND COMMANDLINE contains " -Domain " AND COMMANDLINE contains " -ComputerName ") OR (COMMANDLINE contains " krbscm " AND COMMANDLINE contains " -sc ") OR (COMMANDLINE contains " spawn " AND COMMANDLINE contains " -d " AND COMMANDLINE contains " -cn " AND COMMANDLINE contains " -cp ") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Florian Roth (Nextron Systems)