ET MALWARE Nimbus Manticore Minibrowse Backdoor CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Nimbus Manticore Minibrowse Backdoor CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/api/hospital/data/"; fast_pattern; startswith;
    pcre:"/^\d{9,}$/R";
    http.content_type;
    content:"application/json";
    http.request_body;
    content:"|22|name|22 3a 20 22|";
    content:"|22|company|22 3a 20 22|";
    reference:url,research.checkpoint.com/2025/nimbus-manticore-deploys-new-malware-targeting-europe/;
    classtype:trojan-activity;
    sid:2064965; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_09_29, deployment Perimeter, malware_family Stealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, tag Nimbus_Manticore, updated_at 2025_09_29, mitre_tactic_id TA0009, mitre_tactic_name Collection, mitre_technique_id T1005, mitre_technique_name Data_from_local_system;
    target:src_ip;
)