Wrong imagepath when the service value targets a file w/o extension

[p0w3rsh3ll]

Steps to reproduce

Get-PSAutorun -ServicesAndDrivers | ? { $_.Size -eq 1 }


Path          : HKLM:\System\CurrentControlSet\Services\ibtsiva
Item          : ImagePath
Category      : Services
Value         : C:\Windows\system32\ibtsiva
ImagePath     : C:\Windows\
Size          : 1
LastWriteTime : 12/28/2018 2:10:35 AM
Version       :

Expected behavior

Find C:\Windows\system32\ibtsiva.exe

Environment data

> $PSVersionTable
Name                           Value
----                           -----
PSVersion                      5.1.17763.134
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.17763.134
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1