Creation or Modification of Root Certificateedit
Identifies the creation or modification of a local trusted root certificate in Windows. The install of a malicious root certificate would allow an attacker the ability to masquerade malicious files as valid signed components from any entity (e.g. Microsoft). It could also allow an attacker to decrypt SSL traffic.
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: 1
Added (Elastic Stack release): 7.12.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positivesedit
Certain applications may install root certificates for the purpose of inspecting SSL traffic.
Rule queryedit
registry where event.type in ("creation", "change") and registry.path : ( "HKLM\\Software\\Microsoft\\SystemCertific ates\\Root\\Certificates\\*\\Blob", "HKLM\\Software\\Microsoft\\ SystemCertificates\\AuthRoot\\Certificates\\*\\Blob", "HKLM\\Sof tware\\Policies\\Microsoft\\SystemCertificates\\Root\\Certificates\\*\ \Blob", "HKLM\\Software\\Policies\\Microsoft\\SystemCertificates \\AuthRoot\\Certificates\\*\\Blob" )
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Subvert Trust Controls
- ID: T1553
- Reference URL: https://attack.mitre.org/techniques/T1553/