While you can't search by an asset's GUID (Globally Unique Identifier) in the HCMS, you can search for its filename. If you need to find an asset in HCMS but can only see it on the front end, follow the steps below to find the image.
Instructions
Navigate to your HCMS site
Right-click on the image and save it to your computer
In the file manager window that opens, you will see the File name automatically populated
Search the file name in the HCMS to find the asset