alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED [ANY.RUN] Remcos RAT Checkin 861"; flow:established,to_server; content:"|ba 49 b2 3c 5e 7e 69 43 28 63 8e|"; fast_pattern; startswith; content:"|39 84|"; distance:2; within:2; reference:md5,fcee7ed5ecf26ed1d4287e41df99bfbb; reference:url,app.any.run/tasks/80e04690-c0c0-4bb7-91d3-5e4fb9d215be; classtype:command-and-control; sid:2046729; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_07_05, deployment Perimeter, former_category MALWARE, malware_family Remcos, performance_impact Low, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_04_17, reviewed_at 2025_04_17; target:src_ip;)