Invoke-CimMethod -CimSession $SESSION_OBJECT `
                 -ClassName Win32_Process `
                 -MethodName Create `
                 -Arguments @{
                      CommandLine = "$SOME_COMMAND"
                  }

wmic equivalent

How to run a remote command with wmic

wmic.exe /user:$TARGET_USER `
         /password:$TARGET_PASSWORD `
         /node:$TARGET_HOST `
    process call create "$SOME_COMMAND"
Link to original