Default 4.3 Stock ROM app installation during setup

Hi guys!
I was updating with the latest stock ROM N7100XXUEMK9_N7100VIAEML2_VIA, which is an O2 (Germany) branded ROM. Bad thing is, it seems to install a bootloader that injects app-installation while first boot. It does this even if I flash another ROM (DN3). How can I get rid of this crapware installation routine?