alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Trojan.Proxy.Small.Z CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/socks.php?"; startswith; content:"socksport="; content:"httpsport="; fast_pattern; content:"uid="; content:"tip="; http.header_names; content:!"Referer"; reference:md5,a334091070ebe476e4224da28d9b4bf0; classtype:trojan-activity; sid:2038750; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_06, deployment Perimeter, former_category MALWARE, malware_family Trojan_Proxy_Small_Z, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_17, reviewed_at 2024_09_17;)