alert dns $HOME_NET any -> any any (msg:"ET INFO DYNAMIC_DNS Query to a Suspicious no-ip Domain"; dns.query; content:".no-ip."; classtype:bad-unknown; sid:2013743; rev:11; metadata:attack_target Client_and_Server, created_at 2011_10_05, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_12_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1568, mitre_technique_name Dynamic_Resolution;)