alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ATTACK_RESPONSE Mystic Stealer Admin Panel Inbound"; flow:established,to_client; http.response_body; content:"|20 20 20 20 3c|title|3e 0a 20 20 20 20 20 20 20 20|Mystic|20|Stealer|20 2d 20 20|Login|20 0a 20 20 20 20 3c 2f|title|3e|"; fast_pattern; reference:url,twitter.com/0xrb/status/1653364901384003585; classtype:trojan-activity; sid:2045292; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_05_02, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_02;)