Ditch any and all of these registy cleaners, fixers, optimizers, etc. Simply snake oil. They "guess" at what should and should not be in your registry and have no real performance gains that can be given to you, if anything we have seen horror stories here where these applications have gotten users to the point where the pc simply would not boot into windows and the only solution was a reinstall of windows. As for a false positive issue, i could not tell you that offhand but best solution is to remove it. Also for malware removal i would personally check out somthing known and trusted such as malware bytes antimalware or SUPERantispyware.