You can report this cybercrime to authorities like the FBI Internet Crime Complaint Center (IC3) or Action Fraud (UK).
Often distributed via SPAM emails disguised as legal complaints (e.g., from the FTC). LMMercyChristmas.rar
Check No More Ransom to see if a free decryption tool has been released for this specific strain. You can report this cybercrime to authorities like
Security experts advise against paying the ransom; there is no guarantee you will get your files back, and it funds further crime. and it funds further crime.