Command and Control (TA0011)(external, opens in a new tab or window)
fortinet_fortigate(external, opens in a new tab or window)
network_traffic(external, opens in a new tab or window)
text code block:from logs-fortinet_fortigate.log-*, logs-network_traffic.dns-*, logs-suricata.eve-*, logs-zeek.dns-*, packetbeat-* | where ( data_stream.dataset in ("fortinet_fortigate.log", "network_traffic.dns", "suricata.eve", "zeek.dns") or event.dataset == "dns" ) and dns.question.name is not null and dns.question.registered_domain is not null | eval Esql.client_ip = source.ip, Esql.dataset = COALESCE(data_stream.dataset, event.dataset), Esql.dns_question_name = REPLACE(TO_LOWER(dns.question.name), """\.$""", ""), Esql.dns_registered_domain = REPLACE(TO_LOWER(dns.question.registered_domain), """\.$""", "") | where Esql.client_ip is not null | eval Esql.rmm_vendor = CASE( Esql.dns_registered_domain == "action1.com", "Action1", Esql.dns_registered_domain == "anydesk.com", "AnyDesk", Esql.dns_registered_domain == "atera.com", "Atera", Esql.dns_registered_domain in ("beyondtrustcloud.com", "bomgar.com", "bomgarcloud.com"), "BeyondTrust", Esql.dns_registered_domain in ("connectwise.com", "screenconnect.com"), "ConnectWise", Esql.dns_registered_domain in ("centrastage.net", "datto.com", "datto.net"), "Datto", Esql.dns_registered_domain == "dwservice.net", "DWService", Esql.dns_registered_domain in ( "getgo.com", "gotoassist.at", "gotoassist.com", "gotoassist.me", "gotoresolve.com", "logmein-gateway.com", "logmein.com", "logmeininc.com", "logmeinrescue.com", "logmeinrescue.eu" ), "GoTo/LogMeIn", Esql.dns_registered_domain == "gotohttp.com", "GotoHTTP", Esql.dns_registered_domain in ("kaseya.com", "kaseya.net"), "Kaseya", Esql.dns_registered_domain == "level.io", "Level", Esql.dns_registered_domain == "meshcentral.com", "MeshCentral", Esql.dns_registered_domain in ("netsupportmanager.com", "netsupportsoftware.com"), "NetSupport", Esql.dns_registered_domain in ("ninjaone.com", "ninjarmm.com", "ninjarmm.net"), "NinjaOne", Esql.dns_registered_domain == "pulseway.com", "Pulseway", Esql.dns_registered_domain == "remotepc.com", "RemotePC", Esql.dns_registered_domain == "remoteutilities.com", "RemoteUtilities", Esql.dns_registered_domain == "rustdesk.com", "RustDesk", Esql.dns_registered_domain == "simple-help.com", "SimpleHelp", Esql.dns_registered_domain in ("splashtop.com", "splashtop.eu"), "Splashtop", Esql.dns_registered_domain in ( "superops.ai", "superops.com", "superopsalpha.com", "superopsbeta.com" ), "SuperOps", Esql.dns_registered_domain in ( "aurelius.host", "kabuto.io", "servably.com", "syncroapi.com", "syncromsp.com" ), "Syncro", Esql.dns_registered_domain == "tacticalrmm.com", "TacticalRMM", Esql.dns_registered_domain == "teamviewer.com", "TeamViewer", Esql.dns_registered_domain == "tightvnc.com", "TightVNC", Esql.dns_registered_domain == "ultravnc.com", "UltraVNC", Esql.dns_registered_domain == "vnc.com", "RealVNC", ( Esql.dns_question_name == "assist.zoho.com" or Esql.dns_registered_domain in ("zohoassist.com", "zohoassist.jp") ), "ZohoAssist", NULL ) | where Esql.rmm_vendor is not null | stats Esql.event_count = COUNT(*), Esql.rmm_vendor_count = COUNT_DISTINCT(Esql.rmm_vendor), Esql.rmm_vendor_values = VALUES(Esql.rmm_vendor), Esql.dns_question_name_values = MV_SLICE(VALUES(Esql.dns_question_name), 0, 20), Esql.dns_registered_domain_values = VALUES(Esql.dns_registered_domain), Esql.dataset_values = VALUES(Esql.dataset), Esql.observer_name_values = VALUES(observer.name), Esql.first_seen = MIN(@timestamp), Esql.last_seen = MAX(@timestamp) by Esql.client_ip | where Esql.rmm_vendor_count >= 2 | keep Esql.client_ip, Esql.event_count, Esql.rmm_vendor_count, Esql.rmm_vendor_values, Esql.dns_question_name_values, Esql.dns_registered_domain_values, Esql.dataset_values, Esql.observer_name_values, Esql.first_seen, Esql.last_seen
Install detection rules in Elastic Security
Detect Multiple RMM Vendors Queried by a Single DNS Client in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).