// MITRE ATT&CK
T1542 · Pre-OS Boot
Adversaries 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.(Cita...
How to detect & mitigate it
Detecting Pre-OS Boot starts with your SIEM/EDR telemetry. Write a detection rule with the Sigma generator, analyze suspicious logs in the log analyzer, and place the technique on your coverage with the ATT&CK matrix.
Sub-techniques (5)
T1542.001
System Firmware T1542.002
Component Firmware T1542.003
Bootkit T1542.004
ROMMONkit T1542.005
TFTP Boot
System Firmware T1542.002
Component Firmware T1542.003
Bootkit T1542.004
ROMMONkit T1542.005
TFTP Boot
Related techniques
T1055.011
Extra Window Memory Injection T1205.002
Socket Filters T1027.011
Fileless Storage T1218.011
Rundll32 T1027.009
Embedded Payloads T1564.012
File/Path Exclusions T1216.001
PubPrn T1574.007
Path Interception by PATH Environment Variable
Extra Window Memory Injection T1205.002
Socket Filters T1027.011
Fileless Storage T1218.011
Rundll32 T1027.009
Embedded Payloads T1564.012
File/Path Exclusions T1216.001
PubPrn T1574.007
Path Interception by PATH Environment Variable
Source: MITRE ATT&CK®. ATT&CK is a registered trademark of The MITRE Corporation. Content for educational purposes.