alert http $EXTERNAL_NET any -> [$HOME_NET,$HTTP_SERVERS] any (
msg:"ET MALWARE Suspected Generic PHP Backdoor Activity M1";
flow:established,to_server;
flowbits:set,ET.misc.phpbackdoor;
flowbits:noalert;
http.method;
content:"GET";
http.uri;
content:".php";
content:"47712="; fast_pattern;
reference:url,bartbroere.eu/2023/12/31/php-backdoor-malware/;
reference:url,seclists.org/snort/2024/q1/0;
classtype:web-application-activity;
sid:2049898; rev:1;
metadata:affected_product Wordpress, attack_target Web_Server, created_at 2024_01_03, deployment Perimeter, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_03;
)