alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE FastPOS Version Checkin"; flow:to_server,established; http.method; content:"GET"; http.uri; content:"/cdosys.php?"; fast_pattern; content:"=noupdate&ver="; distance:0; reference:url,documents.trendmicro.com/assets/fastPOS-quick-and-easy-credit-card-theft.pdf; classtype:command-and-control; sid:2022863; rev:3; metadata:created_at 2016_06_06, confidence High, signature_severity Major, updated_at 2020_07_14;)