alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED PoisonIvy.Emp Keepalive to CnC"; flow:established,to_server; content:"|7a 05 61 17 27 f5 09 f9 05 a2 ff 71 e0 49 96 47|"; offset:16; depth:16; dsize:48; reference:url,www.mcafee.com/threat-intelligence/malware/default.aspx?id=541210; classtype:command-and-control; sid:2013922; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2011_11_18, deployment Perimeter, former_category MALWARE, malware_family PoisonIvy, confidence Medium, signature_severity Critical, tag PoisonIvy, updated_at 2024_12_05;)