alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DYN_DNS DYNAMIC_DNS HTTP Request to a *.clickip .de Domain"; flow:established,to_server; http.host; content:".clickip.de"; endswith; reference:url,raw.githubusercontent.com/MISP/misp-warninglists/main/lists/dynamic-dns/list.json; classtype:bad-unknown; sid:2042927; rev:3; metadata:attack_target Client_and_Server, created_at 2022_12_15, deployment Perimeter, former_category INFO, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_06_11, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1568, mitre_technique_name Dynamic_Resolution;)