alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE PHPs Labyrinth Backdoor Stage2 CnC Activity M2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/gen/actual_domain_my.php?pck="; startswith; fast_pattern; reference:url,blog.prevailion.com/2020/02/phps-labyrinth-weaponized-wordpress.html; classtype:command-and-control; sid:2029498; rev:2; metadata:affected_product Wordpress_Plugins, attack_target Web_Server, created_at 2020_02_19, deployment Perimeter, deployment Datacenter, deployment SSLDecrypt, confidence High, signature_severity Major, updated_at 2020_08_19;)