We found this code when we migrated our ScreenConnect instance to the cloud. This was the "migration" script which we modified for use with CrowdStrike. Simply put the Falcon sensor on a public webserver, and issue the following command (copy/paste) in SC.

Update the last line with parameters for your organization.

#!ps
#timeout=3000000
#maxlength=1000000
function downloadFile($url)
{
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
$uri = New-Object "System.Uri" "$url"
$targetFile = "${env:TEMP}\CrowdStrike.exe"
$request = [System.Net.HttpWebRequest]::Create($uri)
$request.set_Timeout(1200000)
$response = $request.GetResponse()
$responseStream = $response.GetResponseStream()
$targetStream = New-Object -TypeName System.IO.FileStream -ArgumentList $targetFile, Create
$buffer = new-object byte[] 10KB
$count = $responseStream.Read($buffer,0,$buffer.length)
$downloadedBytes = $count
while ($count -gt 0)
{
$targetStream.Write($buffer, 0, $count)
$count = $responseStream.Read($buffer,0,$buffer.length)
$downloadedBytes = $downloadedBytes + $count
}
$targetStream.Flush()
$targetStream.Close()
$targetStream.Dispose()
$responseStream.Dispose()
}
downloadFile "https://myhost.host.com/FalconInstaller-Filename.exe"; Start-Process -FilePath "${env:TEMP}\CrowdStrike.exe" -ArgumentList "/install /quiet /norestart CID=[INSERTCIDHERE]"