alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Bamital checkin"; flow:established,to_server; http.uri; content:".php?subid="; content:"&os="; distance:0; content:"&id="; distance:0; content:"&ver="; distance:0; classtype:command-and-control; sid:2017710; rev:4; metadata:created_at 2013_11_14, signature_severity Major, updated_at 2020_04_27;)