alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE [PTsecurity] Remcos RAT Checkin 26"; flow:established,to_server; stream_size:server,=,1; content:"|5a 95 2a 22 4d 37 9e 51 83 55 8f|"; depth:11; reference:md5,8f8d778bea33bc542b58c0631cf9d7e0; classtype:command-and-control; sid:2026004; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_08_21, deployment Perimeter, confidence High, signature_severity Major, tag Remcos, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)