alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET WEB_CLIENT Generic Webshell Accessed on External Server";
flow:established,to_client;
file.data;
content:"<title> By Gentoo"; nocase; fast_pattern;
content:"<h2>Gentoo @ MyHack"; nocase; distance:0;
content:"function ChMod(chdir, file) {var o = prompt('Chmod:"; nocase; distance:0;
classtype:web-application-attack;
sid:2030322; rev:2;
metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_06_12, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_06_12;
)