ET MALWARE InstallFix MacOS CnC Activity M2

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE InstallFix MacOS CnC Activity M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri; bsize:10;
    content:"/api/join/"; fast_pattern;
    http.user_agent;
    content:"curl"; startswith;
    http.header_names;
    content:!"|0d 0a|x-"; nocase;
    reference:url,pushsecurity.com/blog/installfix;
    reference:url,x.com/anyrun_app/status/2036799880392265928;
    classtype:command-and-control;
    sid:2068433; rev:1;
    metadata:affected_product Mac_OSX, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_03_25, deployment Perimeter, deployment SSLDecrypt, malware_family installfix, confidence High, signature_severity Critical, updated_at 2026_03_25, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)