alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/Adware.iBryte.BO CnC Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/impression.do/?event="; depth:22; fast_pattern; content:"&user_id="; distance:0; http.user_agent; content:"download manager"; reference:md5,be6363e960d9a40b8e8c5825b13645c7; classtype:pup-activity; sid:2028633; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_09_26, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag PUP, updated_at 2019_09_26;)