Blog hacked & weird upload scripts appeared

Hey guys,

Recently, all my sites got hacked including my blogs, by some kuwait hacker.

After I deleted the hacker’s index page, there’s a weird “upload script” appeared on the top of my blog, and all over the place in dashboard.

my blog: https://www.funnymiracle.com

anyone know anything about this? and how-to fix this?

I tried backing up and restore…. and it doesn’t work, because it gets restored as well -___-”