Re: how to removed engriks virus
Welcome to Android Central! Which device? Have you already tried a factory reset?
Before the factory reset, go to Settings>Backup & Reset, and uncheck Automatically Restore. Then do the factory reset.
After the reset is done and you've completed the Setup Wizard, go immediately to the Play Store and stop any app from automatically installing. Now check to see if you still have the virus. If not, start reinstalling apps one by one, being very careful with games (especially if they're knockoffs of very popular games), gambling apps, "RAM boosters," and porn. Don't install any apk files, or anything from app sources besides Google Play Store or Amazon.