alert tcp any any -> any any (msg:"REMOTE [PTsecurity] CyberGate Request"; flow:established, to_server; stream_size:server, <, 10; stream_size:client, <, 50; dsize:25<>45; threshold:type limit,track by_src,count 1,seconds 120; flowbits:isset, CyberGate_rqs0; flowbits:unset, CyberGate_rqs0; reference:url, https://www.virustotal.com/gui/file/289c546bff97b1f1c08c5bb2d58ec8073e4fdb3cb5e75215e0b9eaf18e8eb866/; reference:url, rules.ptsecurity.com; classtype:trojan-activity; sid:10010930; rev:2;)