alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Zecurit RMM Activity - Agent Inbound Command Recieved"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:31; content:"/endpointmanager/api/device-rsp"; fast_pattern; http.host; bsize:15; content:"app.zecurit.com"; http.request_body; content:"|22|CommandType|22 20 3a 20 22|CommandReceived|22|"; reference:url,attack.mitre.org/techniques/T1219/; classtype:misc-activity; sid:2072060; rev:1; metadata:attack_target Client_and_Server, created_at 2026_09_17, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag RAT, tag RemoteAccessTool, tag Zecurit, updated_at 2026_09_17, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1219, mitre_technique_name Remote_Access_Software;)