Ransome Ware Question

There is no best tool. The only thing you need is a valid backup. That is the secret :-)

When someone comes up with a solution - FoolishIT or AVG Cloud Care or ANYONE ELSE, it may work great for everything it knows about - but crypto writers get the solution, figure out how to beat it, and release a new one that the old solutions won't stop.  The ONLY 100% way to be safe is with proper backups.

Try running hitman.pro alert to see if other exploit can be detected as probably these are the carrier to ransomware delivered to your machine. Do not run in admin account  as default daily usage as this indirectly give those pesky Ransomware and exploits an easier exploitation attempts. Cryptoprevent should be fine but I suspect the threat has gain privileges via exploited authorised appl and negate the protection. Check the USB drive too.

Consider augmenting existing AV with Malwarebytes Anti-ransomware or Winpatrol Winantiransom. There is also decoy (such as TrapX CryptoTrap) that can be setup to allow time to alert user while the decoys divert the Ransomware doings.

You can also take a snapshot on the advice (https://www.nomoreransom.org/prevention-advice.html) on the nomoreransom website by the consortium of security companies, there is no difference from the expert sharing here and clearly backup is the utmost critical item as part of the preventive action plan - plan for worst case scenario - even paying ransom does not warrant data can be recovered or the malware recurrence will not happen.

there is a list of decryptors (https://decrypter.emsisoft.com/) that you may check out if the variant experience is identified - you an use IDransom (https://id-ransomware.malwarehunterteam.com/) for identification.

Thanks everyone

Looks like my answers has not been helpful. Thanks.