alert dns $HOME_NET any -> any any (msg:"ET MALWARE Lemon_Duck CnC Domain in DNS Lookup"; dns.query; dotprefix; content:".amynx.com"; nocase; endswith; reference:url,www.microsoft.com/security/blog/2021/07/22/when-coin-miners-evolve-part-1-exposing-lemonduck-and-lemoncat-modern-mining-malware-infrastructure/; classtype:domain-c2; sid:2033617; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_07_29, deployment Perimeter, malware_family Lemon_Duck, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_29;)