Checks BIOS information in registry

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

Drops startup file

Loads dropped DLL

Themida packer

Detects Themida, an advanced Windows software protection system.

Adds Run key to start application

Checks whether UAC is enabled

Enumerates connected drives

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

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