Checks BIOS information in registry

BIOS information is often read in order to detect sandboxing environments.

Impair Defenses: Safe Mode Boot

Windows security modification

Adds Run key to start application

Boot or Logon Autostart Execution: Active Setup

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

Checks for any installed AV software in registry

Downloads MZ/PE file

Enumerates connected drives

Attempts to read the root path of hard drives other than the default C: drive.

Event Triggered Execution: Image File Execution Options Injection

Network Service Discovery

Attempt to gather information on host's network.

Writes to the Master Boot Record (MBR)

Bootkits write to the MBR to gain persistence at a level below the operating system.

Checks computer location settings

Looks up country code configured in the registry, likely geofence.

Drops file in System32 directory

Event Triggered Execution: Component Object Model Hijacking

Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.