alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Phorpiex CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/newsocks5.php"; depth:14; fast_pattern; endswith; http.user_agent; content:"Mozilla|2f|5.0|20 28|Windows|20|NT|20|10.0|3b 20|Win64"; http.header_names; content:!"Referer"; content:!"Accept"; content:!"Cache"; content:!"Connection"; reference:md5,03b6c8d49c70df01afc0765f8fa51d0c; classtype:command-and-control; sid:2028920; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_07_31, deployment Perimeter, malware_family Phoriex, performance_impact Low, confidence High, signature_severity Major, tag SpamBot, updated_at 2020_09_17;)