BitLocker key retrieval

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-04
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

  • Requires:
    • AzureAD Audit Log

Detection Modules

Identity Threat Module

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Abuse Elevation Control Mechanism (T1548)

Severity

Informational

Description

An identity retrieved a BitLocker Key.

Attacker's Goals

  • BitLocker keys are used for mitigating unauthorized data access on lost or stolen computers by encrypting all user files and system files on the operating system drive.
  • An attacker that retrieves this key, can potentially access the data that should be encrypted.

Investigative actions

  • Check what key was retrieved.
  • Check for a possible compromised device.
  • Check whether the user is permitted to perform such actions.