alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Trojan.Win32.Codenox.gyezu CnC Activity"; flow:established,to_server; http.request_line; content:"GET /__wendaoQuery.ashx?t=getcoklist&area="; startswith; fast_pattern; content:"&tb="; content:"&min="; content:"&rnd="; content:" HTTP/1.1"; distance:18; within:9; endswith; reference:md5,2c8495e13ba334324574be52dbdce173; classtype:command-and-control; sid:2030918; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_09_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_29;)