Scfilter Cid87d25e32ac0d4ef0b1e0502c6b7dfb77 [portable] -

When Windows detects a smart card, it reads the card’s string or internal framework attributes. The Windows Smart Card Framework transforms these historical bytes into a standard PnP hardware string format: SCFILTER\CID_87D25E32-AC0D-4EF0-B1E0-502C6B7DFB77 Use code with caution.

The Certificate Propagation service creates a virtual device node in the Device Manager under the "Smart Cards" category.

can be a precursor to unauthorized hardware access or credential theft from smart card modules. Analysis Write-up Initial Triage : The sample (e.g., SafeNetAuthenticationClient.exe ) is executed in a controlled environment. Driver Interaction : The process attempts to communicate with the scfilter cid87d25e32ac0d4ef0b1e0502c6b7dfb77

Unique identifiers in software log files.

Select . Select Smart Cards from the category list (if prompted). When Windows detects a smart card, it reads

When a smart card is inserted into a connected hardware reader, the Windows Smart Card Plug and Play architecture triggers a discovery process. It reads the card's data to generate a unique card identifier (CID) string. Windows then checks this hardware ID against its driver database or the Microsoft Update Catalog to install the correct smart card minidriver.

Both the and the Smart Card PnP Filter Driver ( ScFilter ) must display a Running status to guarantee secure authentication token operations. can be a precursor to unauthorized hardware access

The core of the keyword is . The “CID” stands for Card Identifier —a unique, hardware‑generated label that Windows uses to identify a specific smart card. It is not hard‑coded in the driver; rather, the operating system dynamically creates it during the smart‑card discovery process.

If your token only reads simple certificates, you can satisfy the Device Manager dependency using the native system driver archive. Press Win + X and select . Expand the Smart Cards or Unknown Devices node.