alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE MACE C2 Framework Activity (GET)";
flow:established,to_server;
flowbits:set,ET.maceframework;
http.method;
content:"GET";
http.uri;
pcre:"/^\/(?:[0-9]{9,10})/";
content:"/submit.php?id="; within:15; fast_pattern;
http.header_names;
content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22;
threshold:type both,track by_src, count 2, seconds 30;
reference:url,github.com/nickvangilder/most-average-c2-ever/;
classtype:trojan-activity;
sid:2049129; rev:1;
metadata:attack_target Client_Endpoint, created_at 2023_11_09, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_09;
target:src_ip;
)