alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE hacker87 checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/AppEn.php"; fast_pattern; http.request_body; content:"parameter="; startswith; reference:md5,0d7dd2a6c69f2ae7e575ee8640432c4b; classtype:command-and-control; sid:2018420; rev:7; metadata:created_at 2014_04_25, signature_severity Major, updated_at 2024_04_13;)