IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
DNS-over-HTTPS Enabled via Registry
editDNS-over-HTTPS Enabled via Registry
editIdentifies 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: 100 (version history)
Added (Elastic Stack release): 7.16.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Austin Songer
Rule license: Elastic License v2
Investigation guide
editRule query
editregistry 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 mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Impair Defenses
- ID: T1562
- Reference URL: https://attack.mitre.org/techniques/T1562/
Rule version history
edit- Version 100 (8.5.0 release)
-
- Formatting only
- Version 5 (8.4.0 release)
-
- Formatting only
- Version 3 (8.2.0 release)
-
- Formatting only
- Version 2 (8.0.0 release)
-
- Formatting only