alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP OptimizerPro Checkin"; flow:to_server,established; http.method; content:"GET"; http.uri; content:"/op?sid="; content:"&dt="; distance:0; content:"&gid="; distance:0; reference:md5,d04a7f30c83290b86cac8d762dcc2df5; reference:md5,eba3a996f5b014b2d410f4bf32b8530b; classtype:pup-activity; sid:2018742; rev:5; metadata:created_at 2013_12_11, signature_severity Minor, updated_at 2020_08_31;)