ET INFO High Number of Kerberos TGS Requests - Possible Kerberoasting (TCP)
Sourceet/open
CreatedJanuary 14, 2025
UpdatedJanuary 14, 2025
Classificationmisc-activity
alert tcp any any -> $HOME_NET 88 (msg:"ET INFO High Number of Kerberos TGS Requests - Possible Kerberoasting (TCP)"; flow:established,to_server; content:"|03 02 01 05 a2 03 02 01|"; fast_pattern; pcre:"/^\x0a|\0xb/R"; content:"krbtgt"; distance:0; threshold:type both,track by_src,count 10, seconds 20; reference:url,datatracker.ietf.org/doc/html/rfc4120; classtype:misc-activity; sid:2059253; rev:1; metadata:attack_target Client_Endpoint, tls_state plaintext, created_at 2025_01_14, deployment Perimeter, confidence Medium, signature_severity Informational, updated_at 2025_01_14;)
References
Metadata
attack targetClient_Endpoint
tls stateplaintext
created at2025_01_14
deploymentPerimeter
confidenceMedium
signature severityInformational
updated at2025_01_14
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