alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Vawtrak/NeverQuest Checkin"; flow:established,to_server; http.method; content:"POST"; nocase; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; http.request_body; content:"id="; startswith; content:"&info="; distance:0; pcre:"/^id=[A-Z0-9]+?&info=[A-Z0-9]+?$/"; classtype:command-and-control; sid:2017839; rev:5; metadata:created_at 2013_12_12, signature_severity Major, updated_at 2024_04_28;)