Among which, MsMpEng.exe is about to block security firewall and allow remote hacker to come and steal financial information remotely. While suddenly injected by multiple files consuming large part of memory space, computer will become slowing down.įrom the time MSMPENG.EXE has been activated, a series of harmful behavior will be carried out by the virus. For the first stage, MSMPENG.EXE will deploy executable files into the essential part of the registry entry that the virus will be started up instantly while the Windows is open. Generally speaking, chances for picking up this virus can be various, such as downloading program from suspicious website, clicking spam email attachment, and transferring files via infected USB drive. MsMpEng.exe is a dangerous virus created to drop big damage on the targeted computers.