Regular Expression for Application Control

Hi, 

I have tried to build a AC Rule to prevent the usage of following files: 

<filename>.DOC.EXE 

Doc may vary and might be DOCX, XLS, XLSX etc...

Using following regular Expression should work to my understanding: \..*\.[eE][xX][eE].

for savety sake I have verified this using :https://regex101.com/

Result: Rule works perfect, file access and launching are denied. BUT for some reason various other files where blocked as well even so they did not match the regular expression (again verified via above Website):

e.g. Iexplorer.exe, sempub.exe, VPremote.exe, SEMPPackageTool.exe semsvc.exe, etc..

Any idea or recommendation where my mistake is ?

tks 

Sven