alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Remcos RAT Checkin 29"; flow:established,to_server; content:"|5e 0d 10 db 92 bf 73 6c 7d 6f 5d|"; depth:11; fast_pattern; content:"|67 04|"; distance:2; within:2; threshold:type limit, seconds 30, count 1, track by_src; reference:md5,5cb07299cedd69f096b09358754831e0; reference:url,blog.talosintelligence.com/2018/08/picking-apart-remcos.html; classtype:command-and-control; sid:2026019; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_08_23, deployment Perimeter, malware_family Remcos, performance_impact Low, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_06, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)