alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
msg:"ET ATTACK_RESPONSE Eval Hex Obfuscated JS Inbound";
flow:established,to_client;
http.response_body;
content:"text|2f|javascript";
content:"eval|28|decodeURIComponent|28|escape|28|"; fast_pattern;
pcre:"/^[\x22\x27](?:\x5cx[A-Fa-f0-9]{2}){5,20}/R";
classtype:bad-unknown;
sid:2054246; rev:1;
metadata:attack_target Client_and_Server, created_at 2024_07_03, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Minor, tag Obfuscated, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_03, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;
target:dest_ip;
)