SecureBoot was disabled

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	14 Days
Required Data	XDR Agent with eXtended Threat Hunting (XTH)
ATT&CK Tactic	Persistence (TA0003)
ATT&CK Technique	Pre-OS Boot (T1542)
Severity	Low

Description

SecureBoot was disabled, this might be indicative of someone trying to install an alternate non-UEFI supported OS.

Attacker's Goals

Disable SecureBoot to install another OS on the machine.

Investigative actions

Check if a new operating system was installed on the same hardware.