Mika Ayenson
62298d92f4
* Convert config header to setup in note field
* Parse note field into separate setup and note field with marko gfm
* only validate and parse note on elastic authored rules and add CLI description for new DR_BYPASS_NOTE_VALIDATION_AND_PARSE environment variable
Co-authored-by: brokensound77 <brokensound77@users.noreply.github.com>
Removed changes from:
- rules/cross-platform/impact_hosts_file_modified.toml
- rules/integrations/google_workspace/application_added_to_google_workspace_domain.toml
- rules/integrations/google_workspace/domain_added_to_google_workspace_trusted_domains.toml
- rules/integrations/google_workspace/google_workspace_admin_role_deletion.toml
- rules/integrations/google_workspace/google_workspace_mfa_enforcement_disabled.toml
- rules/integrations/google_workspace/google_workspace_policy_modified.toml
- rules/integrations/google_workspace/mfa_disabled_for_google_workspace_organization.toml
- rules/integrations/google_workspace/persistence_google_workspace_admin_role_assigned_to_user.toml
- rules/integrations/google_workspace/persistence_google_workspace_api_access_granted_via_domain_wide_delegation_of_authority.toml
- rules/integrations/google_workspace/persistence_google_workspace_custom_admin_role_created.toml
- rules/integrations/google_workspace/persistence_google_workspace_role_modified.toml
- rules/integrations/kubernetes/execution_user_exec_to_pod.toml
- rules/windows/credential_access_lsass_memdump_file_created.toml
- rules/windows/defense_evasion_adding_the_hidden_file_attribute_with_via_attribexe.toml
- rules/windows/defense_evasion_execution_lolbas_wuauclt.toml
- rules/windows/defense_evasion_suspicious_certutil_commands.toml
- rules/windows/execution_command_shell_started_by_svchost.toml
(selectively cherry picked from commit a52751494e)
57 lines
2.0 KiB
TOML
57 lines
2.0 KiB
TOML
[metadata]
|
|
creation_date = "2021/07/22"
|
|
maturity = "production"
|
|
updated_date = "2022/03/31"
|
|
|
|
[rule]
|
|
author = ["Austin Songer"]
|
|
description = """
|
|
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.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "DNS-over-HTTPS Enabled via Registry"
|
|
note = """## Setup
|
|
|
|
If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
|
|
"""
|
|
references = [
|
|
"https://www.tenforums.com/tutorials/151318-how-enable-disable-dns-over-https-doh-microsoft-edge.html",
|
|
"https://chromeenterprise.google/policies/?policy=DnsOverHttpsMode",
|
|
]
|
|
risk_score = 21
|
|
rule_id = "a22a09c2-2162-4df0-a356-9aacbeb56a04"
|
|
severity = "low"
|
|
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Defense Evasion"]
|
|
timestamp_override = "event.ingested"
|
|
type = "eql"
|
|
|
|
query = '''
|
|
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")
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1562"
|
|
name = "Impair Defenses"
|
|
reference = "https://attack.mitre.org/techniques/T1562/"
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0005"
|
|
name = "Defense Evasion"
|
|
reference = "https://attack.mitre.org/tactics/TA0005/"
|
|
|