alert dns $HOME_NET any -> any any (msg:"ET INFO DYNAMIC_DNS Query to a *.dyndns-at-home .com Domain"; dns.query; content:".dyndns-at-home.com"; fast_pattern; nocase; endswith; reference:url,help.dyn.com/list-of-dyn-dns-pro-remote-access-domain-names/; classtype:bad-unknown; sid:2053723; rev:4; metadata:attack_target Client_and_Server, created_at 2024_06_18, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_11_27, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1568, mitre_technique_name Dynamic_Resolution;)