The legitimate-but-malicious tool this "keygen" claims to unlock is , a high-quality RDP (Remote Desktop Protocol) brute-forcing tool.
It launches cmd.exe and WScript.exe to execute hidden commands and establish control. Context: What is NLBrute? NL-Brute 1.2 x64 & 1.2 x64 VPN Edition - KEYGEN...
Often identified as HackTool:Win32/NLBrute , Trojan.Generic , or Trojan.CoinMiner . Malicious Behavior & Capabilities NL-Brute 1.2 x64 & 1.2 x64 VPN Edition - KEYGEN...
The executable is almost certainly a Trojan that will compromise your personal data or use your hardware for cryptocurrency mining. NL-Brute 1.2 x64 & 1.2 x64 VPN Edition - KEYGEN...