Remote access Trojan (RAT) is a malware program that incorporates a back door for administrative control over the objective PC. Remcos RAT was first sold in hacking forums in late 2016 and from that point it gets updated with more features continuously. Fortinet Security team identified this payload is distributed widely and the latest version is (v1.7.3). Remcos right now being sold from $58 to $389, as per time frame and the maximum number of administrators or customers required.”]
Source: https://gbhackers.com/commercial-rat-remcos-spotted-in-live-attacks/