alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Likely Malicious SSL Cert With Script Tags"; flow:established,to_client; tls.cert_subject; content:"<script>"; content:"</script>"; distance:0; fast_pattern; reference:md5,73705a4a8b03e5f866fac821aaec273a; classtype:domain-c2; sid:2018768; rev:3; metadata:attack_target Client_and_Server, created_at 2014_07_24, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2024_04_25, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)