Looks like I was targeted or at least hit by a very smart bot.
my computer was hit by GANDCRAB V5.1 and it appears they managed to find and drain my BTCz account before I managed to secure it.
almost the entirety of my BTZ account has been drained into t1WzcZYEB9WwZyLiXrBB9gn6jDfTtK51dRE
not sure if there is anything I can do except cry for a while, I thought they crypto wallet I installed to recover my BTCz may have been the cause of the hack but if I understand the time stamps correctly they did the transactions before I managed to reinstall the wallet.
If anyone has any hints etc of what I should do I welcome a response.