alert tcp $EXTERNAL_NET [:32768] -> $HOME_NET any (msg:"ET MALWARE [PTsecurity] Backdoor.Java.Adwind.cu pkt Checker flowbit set 3"; flow:established,to_client; content:"|17 03|"; depth:2; content:"|00 40|"; distance:1; within:2; fast_pattern; stream_size:server, >,1789; stream_size:server,<,2124; stream_size:client, >,447; stream_size:client, <,1722; flowbits:isset, FB332502_0; flowbits:unset, FB332502_0; flowbits:set, FB332502_1; flowbits:noalert; reference:md5,d93dd17a9adf84ca2839708d603d3bd6; classtype:trojan-activity; sid:2024753; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_09_21, deployment Perimeter, malware_family Adwind, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2022_04_18;)