When deleting a user, it appears again with admin rights, how can I delete it?

Question

Burglary protection

Hello !
When the user is deleted, it appears again with admin rights "admin_sweet [email protected]"
Cleaned out the encoded files and pieces of code and updated it re-uploaded (from official sources) all site files
replaced all site passwords, ftp hosting Databases
Disabled and deleted plugins checking by deletion user
Aibolit does not give anything

Where to drip and what to look for, who knows?

Answer 1

It wasn't worth pirating. You have been hacked. The malware is sitting somewhere else.
What is the procedure: new hosting, new wordpress, new database. And further: no null themes, no pirated plugins. Only the official repository or verified marketplaces like envato and verified developers.
ps change your nickname - it is transmitted to you from him))