any body know about .kwszkee

i have a serious proplem with all MS Office files
all office files extentions had been added with .kwszkee after the normal extention of file
just like that
aet.xlsx.kwszkee
aet.docx.kwszkee
and now all files is corrupted any body know how to solve this problem????
Answer #1
Maybe a scan with Malwarebytes or similar may pick something.
Weird though, “kwszkee” doesn’t find anything on Google..