The vid says RSBot.com and I've heard of them, another nexus reseller. I don't know about this one but the screenshot of the paints looks like speedwing's from powerbot.org style.
just scan all the things you ever download, use multiple anti virus programs [not all at the same time, some counteract each other or interfere] to get different outlooks
but i wouldn't trust it anyway, sounds like a cheap tacky website designed for people to download the .exe and enjoy a keystroker