alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET RETIRED PoisonIvy.Eu5 Keepalive from CnC"; flow:established,from_server; content:"|3a 62 26 fd 44 34 01 ed a1 ed 88 48 7e f4 6e ca 0d 81 aa 70 c7 da e0 1c fc f2 f1 d2 94 f6 d9 44 f6 c1 92 c4 4f d4 2d 53 a7 5f 59 fd f6 1e 9b 6f|"; depth:48; dsize:48; reference:md5,d8edad03f5524369e60c69a7483f8365; classtype:command-and-control; sid:2014057; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2011_12_31, deployment Perimeter, former_category MALWARE, malware_family PoisonIvy, confidence Medium, signature_severity Critical, tag PoisonIvy, updated_at 2024_12_05;)