alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED PoisonIvy Keepalive to CnC (Operation SMN Variant)"; flow:established,to_server; dsize:48; content:"|3e 5c d1 68 e7 8c 47 8c ea 2f da 02 fe 43 62 47|"; offset:16; depth:16; reference:md5,afc4d73bde2a536d7a9b7596288ce180; classtype:command-and-control; sid:2019593; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2014_10_29, deployment Perimeter, former_category MALWARE, malware_family PoisonIvy, confidence Medium, signature_severity Critical, tag PoisonIvy, updated_at 2024_12_05;)