625 ILCS 5/7-321
Such bond shall constitute a lien upon the unregistered real estate so scheduled of any surety from the time when a copy of such bond is filed in the office of the recorder in and for the county in which such non-registered real property so scheduled is situated, and such bond shall be a lien upon all registered real property listed or described in the accompanying schedule from the time when notice, as aforesaid, is filed in the office of the registrar of titles in and for the county in which such registered real estate so scheduled is situated. Such lien shall exist in favor of the People of the State of Illinois for the use of any holder of a final judgment against the principal on such bond upon a liability covered by the conditions of such bond.
625 ILCS 5/7-321