alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Remcos RAT Checkin 84"; flow:established,to_server; content:"|d5 c2 f9 4e 0a 7b 1c 62 a1 49 05|"; depth:11; fast_pattern; content:"|5d fe|"; distance:2; within:2; threshold:type limit, seconds 30, count 1, track by_src; reference:md5,12346b292b752af5ad924239eac02a09; classtype:command-and-control; sid:2026901; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_01_23, deployment Perimeter, malware_family Remcos, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_11_06, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)