ET RETIRED Crashedtech Loader CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED Crashedtech Loader CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/addnew.php"; fast_pattern; bsize:11;
    http.request_body;
    content:"username=";
    content:"windows=Windows|2b|";
    content:"client=client";
    content:"ip=";
    reference:url,medium.com/@lcam/updates-from-the-maas-new-threats-delivered-through-nullmixer-d45defc260d1;
    classtype:trojan-activity;
    sid:2044853; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_31, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family Crashedtech_Loader, performance_impact Low, confidence High, signature_severity Major, tag Crashedtech_Loader, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_30, reviewed_at 2024_09_30;
    target:src_ip;
)