alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP W32/BettrExperience.Adware Update Checkin"; flow:established,to_server; http.uri; content:"/Check.ashx?"; depth:12; content:"&e="; content:"&n="; content:"&mv="; http.header_names; content:!"Referer|0d 0a|"; reference:md5,b2651071fbd14bff5fb39bd90f447d27; classtype:pup-activity; sid:2018026; rev:5; metadata:created_at 2014_01_28, signature_severity Minor, updated_at 2020_10_28;)