alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Zyklon CnC Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.request_body; content:"token="; startswith; fast_pattern; content:"&hwid="; distance:44; within:6; threshold:type limit, track by_src, count 1, seconds 120; reference:url,twitter.com/500mk500/status/1301173604072202248; reference:md5,3c8afeb46c1e1a217c0f108c3fb5f4f4; classtype:command-and-control; sid:2030823; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_09_02, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_02;)