ET MALWARE W32/Zemra.DDoS.Bot Variant CnC Beacon

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE W32/Zemra.DDoS.Bot Variant CnC Beacon";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/telnet_cmd.php"; fast_pattern;
    http.user_agent;
    content:"Opera/9.61";
    http.request_body;
    content:"a="; depth:2;
    content:"&b="; distance:0;
    content:"&c="; distance:0;
    reference:url,thegoldenmessenger.blogspot.de/2012/09/2-disclosure-of-interesting-botnet-part-1.html;
    reference:url,thegoldenmessenger.blogspot.de/2012/09/2-disclosure-of-interesting-botnet-part-2.html;
    classtype:command-and-control;
    sid:2016205; rev:4;
    metadata:attack_target Client_Endpoint, created_at 2013_01_15, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_04_23, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)