The installer gives a virus error.
I am sure it's false positive. This often happens with different coins. When I check on virustotal small part of antiviruses gives warning.
You should check the source of download. And if you worries you can use virtual machine or sandbox.
I have just created a wallet and it is 600 minutes behind since a few hours ago, is it normal?
No, it's not normal. I updated yesterday my node. The node has downloaded a blockchain and quickly synchronized. Now worked fine.