Hi all,
I had the same issue and I have solved by rewriting the .htcaccess from root with the default values , removed .htcaccess file from wp-admin.
Don’t reload any admin page yet !!!
Remove about.php file from root and WP-Admin, this page infected!
Open index.php from root and index.php from wp-admin and remove the code injected, you will see it very easy which is wrong code.
Cheers!
