atieclxx.exe is a program which is most likely legit. So, if atieclxx.exe is on your PC, it is most likely ok, and will NOT be a cause for concern. Even if your system is virus-free, it is still recommended to run a well-known antivirus with a good track record, in order to defend your system against viruses and malware.
This program is normally stored in C:\Windows\System32\atieclxx.exe.
The MD5 checksum for this executable is 47c2cce1b50e7e61d1831f7d39830491.
This application is NOT a Windows service. This is very good.
64-bit code has been detected. This application can use the full power of a current PC cpu.
This program does NOT have visible windows. This is most likely a bad thing.
atieclxx.exe is digitally signed. Nowadays the large majority of virus-free software applications are digitally signed.
The digital signature attached to atieclxx.exe is valid. This is excellent.
Digitally signed by: Microsoft Windows Hardware Compatibility Publisher
Certificate's issuer name: Microsoft Windows Hardware Compatibility PCA
This application does NOT have a removal routine stored in registry.