IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
Elastic Docs ›Elastic Security Solution [8.1] ›Detections and alerts ›Prebuilt rule reference
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DNS-over-HTTPS Enabled via Registryedit

Identifies when a user enables DNS-over-HTTPS. This can be used to hide internet activity or the process of exfiltrating data. With this enabled, an organization will lose visibility into data such as query type, response, and originating IP, which are used to determine bad actors.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*
  • logs-windows.*

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Defense Evasion

Version: 2 (version history)

Added (Elastic Stack release): 7.16.0

Last modified (Elastic Stack release): 8.0.0

Rule authors: Austin Songer

Rule license: Elastic License v2

Rule queryedit

registry where event.type in ("creation", "change") and
(registry.path :
"*\\SOFTWARE\\Policies\\Microsoft\\Edge\\BuiltInDnsClientEnabled" and
registry.data.strings : "1") or (registry.path :
"*\\SOFTWARE\\Google\\Chrome\\DnsOverHttpsMode" and
registry.data.strings : "secure") or (registry.path :
"*\\SOFTWARE\\Policies\\Mozilla\\Firefox\\DNSOverHTTPS" and
registry.data.strings : "1")

Threat mappingedit

Framework: MITRE ATT&CKTM

Rule version historyedit

Version 2 (8.0.0 release)
  • Formatting only
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