This is why I don't join such telegram groups with unknown people. And that's suspicious enough not to download files that contains ".scr" and any other unfamiliar file extension. Thanks for sharing this for the sake of most.
That means everywhere that involved cryptocurrency is not safe or you can't trust anyone that you didn't known or met in personal. Some sites that has escrow or called as mid-man that will be taking care of a trade from both parties that are trading scammed both the seller and buyer. Trust Yourself, Trust No one until it's proven safe.
Trading is different from downloading unwanted files. In trading, you can choose to whom you can trade unlike in downloading unfamiliar files, once it is on your PC it can react quickly and do something bad to your local files and even touch your unsecured wallets.
same i also not join this type of telegram group. promote things is ok but even malware came out too.