Sometimes you may have a SID (objectSid) for an Active Directory object but not necessarily know which object it belongs to. You can find the object using PowerShell.
I came across this when recovering a hard drive for a company. The hard drive was from a domain computer and the NTFS permissions only showed the SID as the recovery computer was a workgroup computer and didn’t have access to the domain. I wanted to re-apply the NTFS permissions on the replaced drive so I needed to know which each SID belonged to.
Run the following on a computer that is a member of the domain: