Rule History

alert tcp $HOME_NET 23 -> any any (msg:"ET SCADA [nsacyber/ELITEWOLF] Schweitzer Engineering Laboratories SEL Telnet Activity"; flow:established,to_client; content:"SEL-"; fast_pattern; pcre:"/^\d{3,4}/R"; reference:url,github.com/nsacyber/ELITEWOLF; classtype:misc-activity; sid:2048665; rev:1; metadata:affected_product Schweitzer_Engineering_Laboratories_SEL_Series, attack_target ICS, created_at 2023_10_19, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Minor, updated_at 2023_10_19; target:src_ip;)