Modifies file permissions

Reads user/profile data of web browsers

Infostealers often target stored browser data, which can include saved credentials etc.

Adds Run key to start application

Checks for any installed AV software in registry

Downloads MZ/PE file

Modifies Installed Components in the registry

Sets file execution options in registry

Writes to the Master Boot Record (MBR)

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

Checks computer location settings

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

Drops file in System32 directory