alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED PoisonIvy.Esf Keepalive to CnC"; flow:established,to_server; content:"|ad 4a 6c bb a7 9c 30 3e 44 bc cf a5 db 77 3c 62|"; offset:16; depth:16; dsize:48; reference:md5,e6ca06e9b000933567a8604300094a85; classtype:command-and-control; sid:2014143; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2012_01_24, deployment Perimeter, malware_family PoisonIvy, confidence Medium, signature_severity Critical, tag PoisonIvy, updated_at 2024_12_05;)