It's the clipboard(copy paste) malware right? This is actually new and if you're someone who's careful and a responsible internet user, you'll not just going to download anything on the internet without knowing what it is.
That's the first rule to obtain this malware, to download and install it. That means, don't just download some extension that you don't know and you don't need.
If it's clipboard malware it's not new, it's been around for a long time and I've seen a lot of victims of these incidents. For these viruses, it is only necessary to use specialized anti-virus software to remove them. Always check your wallet address before making a transaction, although it takes time, after copying the wallet address, I always check each character of it, I check at least 2 times and then press the send button. Malware is extremely sophisticated these days, so we should be slow but safe.