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;)