alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET 2086 (msg:"ET MALWARE Suspected Kimsuky APT RevClient Related Activity"; flow:established,to_server; dsize:50<>100; content:"|3b|"; offset:3; depth:2; content:"|3b|Windows|20|"; distance:0; fast_pattern; content:"|2e|"; within:30; content:"|3b|"; endswith; reference:md5,02804d632675b2a3711e19ef217a2877; reference:url,asec.ahnlab.com/en/57873/; classtype:trojan-activity; sid:2049686; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_12_13, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_13; target:src_ip;)