alert dns $HOME_NET any -> any any (msg:"ET MALWARE IcedID CnC Domain in DNS Lookup (mestorycallin .com)"; dns.query; dotprefix; content:".mestorycallin.com"; nocase; endswith; classtype:domain-c2; sid:2048372; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_10_02, deployment Perimeter, malware_family IcedID, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_02, reviewed_at 2023_10_02;)