alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Unit42 PoisonIvy Keepalive to CnC"; flow:established,to_server; dsize:48; content:"|b8 98 30 04 e8 10 e5 8c e4 06 39 1b e0 51 96 40|"; offset:16; depth:16; reference:url,researchcenter.paloaltonetworks.com/2015/04/unit-42-identifies-new-dragonok-backdoor-malware-deployed-against-japanese-targets/; classtype:command-and-control; sid:2020923; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_04_16, deployment Perimeter, former_category MALWARE, malware_family PoisonIvy, confidence Medium, signature_severity Critical, tag PoisonIvy, updated_at 2024_12_05;)