Hi kgupta1804,
I'm Paul and I'm here to help you with your concern.
There are only 2 ways to solve a Ransomware attack.
- If you have a backup of your personal important files, clean install Windows to remove all traces of the Ransomware.
- If a Decryption tool is available to decrypt the files.
You can try to check this page for a Decryption tool.
https://www.nomoreransom.org/en/decryption-tool...
note: Make sure to scan and remove the malware with Microsoft Defender before using the Decryption Tool.
I hope this helps. Feel free to ask back any questions and keep me posted.
Standard Disclaimer: There are links to non-Microsoft websites.
The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.