ET INFO SimpleHelp RMM machine ping Request to Server

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET INFO SimpleHelp RMM machine ping Request to Server";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/machine-"; fast_pattern; startswith;
    pcre:"/^\d{13}/R";
    content:"|3f|ping|3d|"; distance:0;
    content:"53475F"; distance:0;
    content:"5375697465"; distance:0;
    pcre:"/\x3fping\x3d[A-F0-9]{10,}$/";
    threshold:type limit,track by_src,count 5,seconds 300;
    reference:url,simple-help.com/;
    classtype:misc-activity;
    sid:2067965; rev:1;
    metadata:affected_product SimpleHelp, attack_target Client_and_Server, tls_state plaintext, created_at 2026_03_02, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag RMM, updated_at 2026_03_02, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1219, mitre_technique_name Remote_Access_Software;
    target:src_ip;
)