this malware is found in registry key. should i remove it?
It is not detected as malware. It is detected as a PUP (= Potentially Unwanted Program)

If you had done a little (re)search, you would have known that MBam is a trusted tool.

will i face any problem if i remove this file?
There is only one way to find out. Remove it and see what happens.

For help with malware removal…
https://forum.avast.com/index.php?topic=53253.0