alert dns $HOME_NET any -> any any (msg:"ET INFO Remote Monitoring and Management (RMM) Tool in DNS Lookup (itagent .io)"; dns.query; bsize:10; content:"itagent.io"; nocase; reference:url,attack.mitre.org/techniques/T1219/; reference:url,help.gorelo.io/en/articles/8651857-gorelo-connect-remote-control; reference:url,discord.gorelo.io/m/1399561240031789116; reference:url,itagent.com; classtype:misc-activity; sid:2066617; rev:1; metadata:affected_product ITAgent, attack_target Client_and_Server, created_at 2026_01_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag RAT, tag RemoteAccessTool, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1219, mitre_technique_name Remote_Access_Software;)