The virus has changed the file extension.

Hello Friends
My computer recently got a strange virus
Change the extension of all files (Word, Excel, Photoshop, etc.)

File extensions such as:
10.93.DOCX.kbuibxd
amar.XLSX.kbuibxd
khorasan.XLSM.kbuibxd

Note: Only files with uppercase extensions

Please help me because I have lost important files <email address removed>

Even after changing the file extension, the file is corrupted and can not be opened