Executes dropped EXE

Loads dropped DLL

UPX packed file

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

Adds Run key to start application

Checks installed software on the system

Looks up Uninstall key entries in the registry to enumerate software on the system.

Installs/modifies Browser Helper Object

BHOs are DLL modules which act as plugins for Internet Explorer.

Writes to the Master Boot Record (MBR)

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

Drops file in System32 directory