alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Linux/Chapro.A Malicious Apache Module CnC Beacon"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/index.php"; http.request_body; content:"c="; depth:2; content:"&version="; distance:0; content:"&uname="; fast_pattern; distance:0; reference:url,blog.eset.com/2012/12/18/malicious-apache-module-used-for-content-injection-linuxchapro-a; classtype:command-and-control; sid:2016062; rev:3; metadata:attack_target Client_Endpoint, created_at 2012_12_19, deployment Perimeter, signature_severity Major, tag c2, updated_at 2024_03_08, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)