alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET RETIRED Chorns/PoisonIvy related Backdoor Keep Alive"; flow:established; dsize:12; content:"/AVAILABL/|0d0a|"; reference:md5,9fbd691ffdb797cebe8761006b26b572; classtype:trojan-activity; sid:2010345; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, former_category MALWARE, malware_family PoisonIvy, signature_severity Critical, tag PoisonIvy, updated_at 2024_12_05;)