Executes dropped EXE

Loads dropped DLL

Enumerates connected drives

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

Writes to the Master Boot Record (MBR)

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

UPX packed file

Detects executables packed with UPX/modified UPX open source packer.