ET MALWARE ChaseBot CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE ChaseBot CnC Checkin";
    flow:to_server,established;
    http.method;
    content:"GET";
    http.uri;
    content:".php?btc="; depth:30; fast_pattern;
    content:"&login="; distance:0;
    content:"&pwd="; distance:0;
    http.header_names;
    content:"Host|0d 0a 0d 0a|";
    content:!"Referer";
    content:!"User-Agent";
    content:!"Cache";
    content:!"Accept";
    classtype:command-and-control;
    sid:2027113; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_03_25, deployment Perimeter, malware_family ChaseBot, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_08_28;
)