T1542 Pre-OS Boot
EnterpriseAdversaries may abuse Pre-OS Boot mechanisms as a way to establish persistence on a system. During the booting process of a computer, firmware and various startup services are loaded before the operating system. These programs control flow of execution before the operating system takes control. Adversaries may overwrite data in boot drivers or firmware such as BIOS (Basic Input/Output System) and The Unified Extensible Firmware Interface (UEFI) to persist on systems at a layer below the operating system. This can be particularly difficult to detect as malware at this level will not be detected by host software-based defenses.
platforms
Platforms this applies to.
tactics
ATT&CK tactics this technique serves.
sub-techniques (5)
More specific entries beneath this one.
mitigations
ATT&CK mitigations that reduce this.
detected by (7)
Data components that detect this.
NIST CSF 2.0 — areas of relevance (Protect / Detect)
NIST CSF 2.0 areas this most relates to (evidence-ranked).
- PR.PSPlatform Securitystrong · backed by 10 of 19 mapped controls
- PR.AAIdentity Management, Authentication, and Access Controlmoderate · backed by 7 of 19 mapped controls
- DE.CMContinuous Monitoringmoderate · backed by 6 of 19 mapped controls
Derived from MITRE CTID (Apache-2.0) and the NIST 800-53 ↔ CSF crosswalk (public domain). Indicative relevance along the Protect/Detect axis — not a compliance assessment or coverage claim.
mitigating controls (19)
Security controls that mitigate this.
source
Where this definition is published.