alert dns $HOME_NET any -> any any (msg:"ET MALWARE Gamaredon APT Domain in DNS Lookup (decorous .ru)"; dns.query; dotprefix; content:".decorous.ru"; nocase; endswith; reference:url,twitter.com/malPileDiver/status/1651728614394675200; classtype:trojan-activity; sid:2045248; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_04_28, deployment Perimeter, deprecation_reason Age, malware_family Gamaredon, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_08_21, reviewed_at 2023_08_21;)