735 ILCS 5/4-114
The officer shall also serve a certified copy of the order upon the defendant therein, if he or she can be found, in like manner as provided for service of summons in other civil cases. Such service upon the defendant shall be made as soon as possible after the entry of the order for attachment upon the property described in the order, but in no event later than 5 days thereafter. Failure to make such service upon the defendant within the time provided shall in the absence of good cause shown for such delay, be ground for vacating of the attachment order upon motion of the defendant made at any time. The return of the order shall state the particular manner in which the order was served. If the certified copy of the order is served upon the defendant less than 10 days before the return day thereof, the defendant shall not be compelled to appear or plead until 15 days after the return day designated in the order. The certified copy of the order for attachment may be served as a summons upon defendants wherever they may be found in the State, by any person authorized to serve process in like manner as summons in other civil cases.
735 ILCS 5/4-114