Do you mean like, a Local Active Directory user who was created in AWS, then sync'd down? If so, so long as you have a custom attribute in AD for that info, you can try it with this:
SELECT tblAssets.AssetID,
tblAssets.AssetName,
tblAssets.Domain,
tblADusers.Username,
tblADusers.Created,
tblADusers.awsCreated
FROM tblAssets
INNER JOIN tblADusers ON tblAssets.AssetID = tblADusers.AssetID
WHERE tblADusers.awsCreated = 'True'
ORDER BY tblADusers.Created DESC;
In the above example, I assumed the custom attribute was named "awsCreated"