But who is stupid enough to download a random file from a stranger on the internet?
I am sure those who fell for the trick are not stupid in real life, they are just temporally blinded by greed.
not all viruses are detected by your anti-virus
Yes! Sooooo many people think a program is safe because it was reported clean by multiple anti-malware programs. They cannot be more wrong, and it will be too late before they finally realise it.
Just wondering is it possible to include a patch in the malware file so that your anti-virus can't detect the specified virus? Just wondering.
I imagine a wallet stealer malware is essentially a program to read a file and upload/email its contents somewhere. These are extremely normal operations of most applications. I think it would be extremely difficult to detect these wallet stealers in the first place, without blocking other legit software.