Cardlock.exe -

A legitimate cardlock.exe sits idle 99% of the time, using 0% to 0.5% CPU. It does not communicate over the internet (it only talks to a local USB device). If you see:

…then the process is likely mining cryptocurrency (CPU spike) or exfiltrating data (network activity).

When analyzing the binary code structure of suspicious variants of cardlock.exe, the following indicators are typically observed: cardlock.exe

Digital Signature: Usually missing, invalid, or self-signed. A lack of a valid Authenticode signature from a recognized vendor (like SanDisk, Sony, or reputable software houses) is a major red flag.

Most fuel management vendors provide a built-in repair utility:

Registry Keys:

File Locations:

Behavioral Signs:

Open Command Prompt as administrator and run:

regsvr32 C:\Program Files\Cardlock\cardlock_interface.dll
regsvr32 C:\Windows\SysWOW64\mscomm32.ocx

(Adjust the file paths to match your system.) A legitimate cardlock