Checks BIOS information in registry

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

Loads dropped DLL

Themida packer

Detects Themida, an advanced Windows software protection system.

Checks whether UAC is enabled

Looks up external IP address via web service

Uses a legitimate IP lookup service to find the infected system's external IP.

Writes to the Master Boot Record (MBR)

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

Suspicious use of NtSetInformationThreadHideFromDebugger