Attempts of Kerberos Coercion Via DNS SPN Spoofing
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About the rule
Rule Type
Standard
Rule Description
Detects the Base64 pattern "UWhRC?AAYBAAAA", associated with Kerberos coercion attacks that spoof SPNs using nslookup-based tools.
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND (COMMANDLINE contains "UWhRCA" AND COMMANDLINE contains "BAAAA")
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
Active Directory
Author
@Swachchhanda Shrawan Poudel (Nextron Systems)
