alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"🐾 - 🚨 SecTopRat 👿 HTTP reply 🪟 from C2 Server - 📢 Established connection"; flow:to_client, stateless; flowbits:isset,pptrls.sectoprat; http.stat_code; content:"200"; http.protocol; content:"HTTP/1.1"; http.server; content:"Microsoft-HTTPAPI"; startswith; reference:url,https://malpedia.caad.fkie.fraunhofer.de/details/win.sectop_rat; reference:url,https://rmceoin.github.io/malware-analysis/2025/03/13/supply-chain.html; target:dest_ip; metadata:attack_target Client_and_Server, signature_severity Major, affected_product Windows_XP_Vista_7_8_10_11_Server_32_64_Bit, mitre_tactic_id TA0011, mitre_tactic_name Command_and_Control, mitre_technique_id T1071.001, mitre_technique_name Application_Layer_Protocol_Web_Protocols, former_category MALWARE, malware_family SecTopRat, created_at 2025_03_20, updated_at 2025_03_20; sid:3321431; rev:2; classtype:trojan-activity;)