alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP ProxyGearPro Proxy Tool PUA"; flow:to_server,established; http.method; content:"GET"; http.user_agent; content:"Proxy|20|Gear|20|Pro/"; fast_pattern; http.header_names; content:!"Referer|0d 0a|"; reference:md5,b8889db7b4ef74c9302c12781a92a23a; classtype:pup-activity; sid:2024484; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_07_20, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Minor, updated_at 2020_08_31;)