$dll = "C:\Windows\System32\termsrv.dll" $bytes = [System.IO.File]::ReadAllBytes($dll) $pattern = @(0x39,0x81,0x3C,0x06,0x00,0x00,0x0F,0x84) for ($i=0; $i -lt $bytes.Length - $pattern.Length; $i++) $match = $true for ($j=0; $j -lt $pattern.Length; $j++) if ($bytes[$i+$j] -ne $pattern[$j]) $match=$false; break
Typically found on GitHub (maintained by community contributors). 2. Manual Hex Editing windows server 2019 termsrvdll patch top
Unauthorized users may find it easier to maintain persistence on a machine with "hidden" active sessions. $dll = "C:\Windows\System32\termsrv