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?"; startswith; content:"&e="; content:"&n="; content:"&mv="; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,b2651071fbd14bff5fb39bd90f447d27; classtype:pup-activity; sid:2018026; rev:7; metadata:created_at 2014_01_28, signature_severity Minor, updated_at 2024_05_01;)