scfilter cid87d25e32ac0d4ef0b1e0502c6b7dfb77 action = block log = yes description = "Block specific content hash"

If you have the or the content pattern for this CID, I can give a more specific threat analysis and recommended detection logic.

The keyword refers to a specific Hardware ID for a Generic Smart Card device as recognized by the Windows operating system . Specifically, it is the identifier used by the Smart Card PnP Class Filter Driver ( scfilter.sys ) to manage the communication between a smart card and its reader. Understanding SCFILTER and Smart Card IDs

: Occasionally, security scanners like Norton Power Eraser may flag scfilter.sys as a potential threat, though this is usually a false positive as it is a legitimate Microsoft system file. How to Resolve Missing Driver Errors

What and hardware device (e.g., YubiKey, CAC card) are you using? Smart Card Enhancements - Windows - Microsoft Learn

You do not need to "configure