alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Kazy.325252 Variant CnC Beacon 2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/track/?ip="; fast_pattern; depth:11; content:"&data="; distance:0; pcre:"/^\x2Ftrack\x2F\x3Fip\x3D\d&data\x3D/"; http.header; content:"Accept|3A 20|text/*, application/*, */*|0D 0A|"; http.header_names; content:!"User-Agent|0d 0a|"; content:!"Referer|0d 0a|"; reference:md5,87cdd25ac537280cc6751050050cae9c; classtype:command-and-control; sid:2018682; rev:4; metadata:attack_target Client_Endpoint, created_at 2014_07_16, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_05_28, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)