alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Socks5SystemZ CnC Checkin Response M2"; flow:established,to_client; flowbits:isset,ET.Socks5Systemz.Checkin; http.stat_code; content:"200"; http.response_body; content:"94ee3c6bc7"; fast_pattern; reference:url,hwww.bitsight.com/blog/unveiling-socks5systemz-rise-new-proxy-service-privateloader-and-amadey; classtype:trojan-activity; sid:2049117; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, created_at 2023_11_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_11_07;)