alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/Adware.Bang5mai.BB CnC Activity M3"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/2.gif?x22="; startswith; content:"&x12=&x21="; distance:7; within:10; content:"&x9=&x16=0&x1="; distance:32; within:14; fast_pattern; reference:md5,6b540ba2fc2e606e9e2c8b72818caa28; classtype:pup-activity; sid:2029531; rev:2; metadata:attack_target Client_Endpoint, created_at 2020_02_25, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, updated_at 2020_02_25;)