how to remove virus that came from the appstore ?

Dr. Cleaner is not in the App Store.

Dr. Cleaner is third party garbage from the same developers as the equally useless CleanMyMac.

It's not a virus. Someone in your household installed it.

While Dr. Cleaner is garbage, MacPaw does not include things such as keyloggers or other types of spyware with their apps. Assuming you really have such malware on your Mac, it came from somewhere else.

Typically, malware that bad comes from illegal sites, such as P2P or file sharing of cracked commercial software. When you install (example) a cracked version of Photoshop, you give that installer the right to install anything else in that package you weren't expecting. Illegal software is the number one way crooks are getting the worst type of malware on Macs.

Not saying this is what you did, just pointing out the most common vector for such infections.

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