Boot or Logon Autostart Execution: Print Processors

Adversaries may abuse print processors to run malicious DLLs during system boot for persistence and/or privilege escalation.

Checks computer location settings

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

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.

Impair Defenses: Safe Mode Boot

Modifies file permissions

Modifies system executable filetype association

Indicator Removal: File Deletion

Adversaries may delete files left behind by the actions of their intrusion activity.

Maps connected drives based on registry

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

Writes to the Master Boot Record (MBR)

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