If you have scanned using Symantecs latest definitions, backed this up with an AVG scan, done a spyware and trojan scan and nothing has turned up, then turned 'Off' your system restore.
A simple reboot will erase all previous restore points so you can turn it back on again if you use it at all so you should have nothing to worry about from that avenue.
One further thing you should do is empty your 'Temp' files as this one often uses a file in there to begin it's install, simple task really.
Bloodhound has been around in various guises for sometime now and is well catered for by Both Symantec and AVG both of which detect its presence.
I note that you say you use your system for financial data storage so it is to be hoped that you regularly 'Back-up' this data to disk, again a simple job that folks often overlook.