HELP ME I got effected by GANDCRAB ransomeware and all my files & documents got encrypted and .SBEPM file extension got added orginal file name
You can decrypt your files at no cost:
Sounds like a Malware issue. If you were using the TOR network while infected...not sure how helpful this Stack can be....I'm not very experienced here either. Id research the type of Malware....here's a good starting place: https://www.bleepingcomputer.com/news/security/gandcrab-ransomware-distributed-by-exploit-kits-appends-gdcb-extension/ Good Luck and Cheers!
Erase data and restore from a backup (or snapshot) if you can. This problem is more of a professional's job than fixing it on your own... maybe you should seek the advice of a consultant?