alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED PoisonIvy.Eu3 Keepalive to CnC"; flow:established,to_server; content:"|77 1b 13 19 a2 d1 8d a1 b5 05 8f fa 3f aa c0 8a|"; offset:16; depth:16; dsize:48; classtype:command-and-control; sid:2013924; 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;)