MalwareRemovalBot is a rogue anti-malware tool and has re-launched in to distribution and is infecting many machines, especially anyone searching for "malwarebytes" in Bing or Altavista:

MalwareRemovalBot re-launches & how to remove it Malwarebot

Clicking the link leads to this webpage:

MalwareRemovalBot re-launches & how to remove it Malwarebot2

After downloading, it placed the setup file on to the Desktop:

MalwareRemovalBot re-launches & how to remove it Malwarebot3

After installing the program, this is what the interface looks like:

MalwareRemovalBot re-launches & how to remove it Malwarebot4

When the scan for malware finishes, it dȋsplay the results then tells you to Register first, before being able to remove the "infections":

MalwareRemovalBot re-launches & how to remove it Malwarebot5

Clicking the yes button on the program leads to the following registration page where it asks for your personal information, which is how it performs its scam:

MalwareRemovalBot re-launches & how to remove it Malwarebot6

How does this rogue work?
This program is installed on your computer, usually by Trojans. Once the program is installed, rogues dȋsplay fake security alerts stating that your computer is infected or is under a risk. It urges you to purchase its software in order to protect yourself. If you click on one of these alerts, you will then be brought to the website of the program, where you will be prompted to purchase the software.

When this program is installed, it will be configured to start automatically, when your computer loads. It will first scan your computer and list a variety of fake infections that it says are running on your computer. The program says that it cannot be removed unless you first purchase it.

Removal tutorial: Malwarebytes' Anti-Malware

When removing, remember to click Remove Selected:

MalwareRemovalBot re-launches & how to remove it Malwarebot7

and restart your computer, if prompted:

MalwareRemovalBot re-launches & how to remove it Malwarebot8