alert dns $HOME_NET any -> any any (msg:"ET DYN_DNS DYNAMIC_DNS Query to softether .net Domain"; dns.query; dotprefix; content:".softether.net"; nocase; endswith; reference:url,softether.net; classtype:misc-activity; sid:2048267; rev:2; metadata:affected_product Any, attack_target Client_and_Server, created_at 2023_09_26, deployment Perimeter, former_category INFO, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_06_11, reviewed_at 2023_09_26;)