alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/Toolbar.CrossRider.A Checkin"; flow:to_server,established; http.uri; content:".gif?action="; content:"&browser="; content:"&ver="; content:"&bic="; fast_pattern; content:"&app="; content:"&appver="; content:"&verifier="; reference:md5,55668102739536c1b00bce9e02d8b587; classtype:pup-activity; sid:2018301; rev:6; metadata:created_at 2012_10_05, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_12;)