New Root or CA or AuthRoot Certificate to Store

Severity: medium
Author: frack113
Source: upstream

Detects the addition of new root, CA or AuthRoot certificates to the Windows registry

MITRE ATT&CK coverage

Tactic	Techniques
Impact	`T1490` Inhibit System Recovery

Event coverage

Provider	Event ID	Title
Sysmon	13	RegistryEvent (Value Set)

Stages and Predicates

Stage 1: `selection`

or:
TargetObject|contains: '\SOFTWARE\Microsoft\EnterpriseCertificates\AuthRoot\Certificates\'
TargetObject|contains: '\SOFTWARE\Microsoft\EnterpriseCertificates\CA\Certificates\'
TargetObject|contains: '\SOFTWARE\Microsoft\EnterpriseCertificates\Root\Certificates\'
TargetObject|contains: '\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\'
TargetObject|contains: '\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates\'
TargetObject|contains: '\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates\'
TargetObject|contains: '\SOFTWARE\Policies\Microsoft\SystemCertificates\AuthRoot\Certificates\'
TargetObject|contains: '\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\Certificates\'
TargetObject|contains: '\SOFTWARE\Policies\Microsoft\SystemCertificates\Root\Certificates\'
Details: 'Binary Data'
TargetObject|endswith: '\Blob'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.