Problem with PrestaShop after attacks - Back-office is not working

[Wincoro]

Hi guys,

I have a little problem for now.

A few days ago, my server was attacked. ( sort of PHP injections i think )

On prestashop catalog server side I deleted infected files that looks like:

./public_html/sklep/docs/licences/fileuploaders.txt-//fake
./public_html/sklep/docs/licences/fileuploaders.txt//fake
./public_html/sklep/controllers/admin/AdminLoginController.php(?)
./public_html/sklep/controllers/admin/AdminSceneController.php(?)
.public_html/sklep/controllers/front/AdminControllers.php//fake
./public_html/sklep/php_info.php//fake
./public_html/sklep/up.php//fake
./public_html/sklep/js/jquery/ui/i18n/js_jquery-ui-i18n.php//fake
./public_html/sklep/modules/wp-record-crypt.php//fake
./public_html/sklep/modules/up.php//fake
./public_html/sklep/modules/pk_flexmenu/uploads/hous.php
./public_html/sklep/modules/pk_vertflexmenu/uploads/hous.php(?)
./public_html/sklep/modules/sekeywords/translations/en_US.php(?)
./public_html/sklep/css/cms.php(?)
./public_html/sklep/stylexs/index.php//fake
./public_html/sklep/img/tmp/cms/404.php(?)

./public_html/sklep/img/t/logs.php(?)
./logs/Oct-2017.tar.gz.6(?)

So I restored orginal files from github branches ( 1.6.15 )

AdminLoginController.php

AdminSceneController.php, and its working correctly to enter back-office panel, BUT after typing and log in its stuck on --> 

http://SITE/[...]/index.php?controller=AdminAddonsCatalog&token=[...] Blank page and there is no interaction with server side (GET post)

And I have no idea how to fix it... I'm missing something?