Malicious WinRing0 Vulnerable Driver Load

ATT&CK techniques

Impact

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
- T1496Resource Hijacking

What it detects

This rule detects loading of the WinRing0 kernel driver which the BlueSky actor deployed as a bring your own vulnerable driver to tamper with protected processes and disable security controls and this matters because this signed but abusable driver grants ring zero access and its presence outside of the few legitimate hardware utilities that ship it is a strong indicator of defense evasion.

Reporting behind it

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Malicious WinRing0 Vulnerable Driver Load

Pivot detection · T1685 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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