Protocol Handlers and Filters

https://msdn.microsoft.com/en-us/library/Aa767916.aspx
http://gladiator-antivirus.com/forum/index.php?showtopic=24610
https://www.symantec.com/security_response/attacksignatures/detail.jsp?asid=22483
$data += [PSObject] @{Path='HKCU:\SOFTWARE\Classes\Protocols\'; Entries='Filter','Handler'}
$data += [PSObject] @{Path='HKLM:\SOFTWARE\Classes\Protocols\'; Entries='Filter','Handler'}
$data += [PSObject] @{Path='HKCU:\Software\Classes\Filter'; Entries='*'}
$data += [PSObject] @{Path='HKLM:\Software\Classes\Filter'; Entries='*'}
HKLM\SOFTWARE\Classes\Protocols\Filter
HKEY_CLASSES_ROOT\PROTOCOLS\Filter