alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"MALWARE [PTsecurity] Ursnif/Gozi SSL connection"; flow:established, to_client; content:"|1703|"; depth:2; content:"|0160|"; distance:1; within:2; fast_pattern; stream_size:server, >,1291; stream_size:server, <,2196; stream_size:client, >,971; stream_size:client, <,1844; flowbits:isset, FB625629_1; flowbits:unset, FB625629_1; threshold:type limit, track by_src, count 1, seconds 30; classtype:trojan-activity; metadata:created_at 2018_08_19; reference:url, github.com/ptresearch/AttackDetection; sid:11003535; rev:1;)