What is CIR Registry?

CIR Registry is a software program developed by ITE, is considered a driver that is commonly found on Dell systems. Other technical notes report this as part of the PC DT/NB product and is a single-function PCI Express to PCI bridge, which is compliant with the PCI Express Base. This driver supports PCI-to-PCI bridge with subtractive decode for legacy devices.

Is this malware?

No, this application is not considered malware. This driver is commonly found on systems running Windows 7 (SP1) and Windows 8. This driver is considered safe when installed as part of a new system from Dell. Typically you can identify that it is part of an original install by the install date of the application in comparison to other files that were installed when the system was originally installed.