alert tcp $EXTERNAL_NET !$HTTP_PORTS -> $HOME_NET any (msg:"ET MALWARE [PTsecurity] pkt checker 1"; flow:established, to_client; dsize:30<>33; stream_size:server,<,35; stream_size:client,<,513; stream_size:server,>,0; stream_size:client,>,30; flowbits:noalert; flowbits:isset,FB180732_0; flowbits:unset, FB180732_0; flowbits:set,FB180732_1; classtype:trojan-activity; sid:2024695; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_09_11, deployment Perimeter, malware_family Remcos, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2019_07_26;)