dwm.exe is a program which is probably legit. So, if dwm.exe is on your laptop or desktop computer, it is probably ok, and will NOT be a cause for concern. Even if your PC is virus-free, it is still recommended to purchase a well-known antivirus with a good track record, in order to yourself your PC against threats.
This application is normally found on disk in C:\Windows\System32\dwm.exe.
The MD5 fingerprint for this program is d9ac3bae05224c5a7d7c3f0eb5c51b86.
This application does NOT run as a Windows service. This is normally a good sign.
dwm.exe appears to use the functions of Windows SFC (System File Checker) or Windows File Protection.
This app runs in 32-bit mode. It can not use the entire set of features of nowadays' PC chips. This is quite normal because the publishers did not upgrade it to use the x64 instruction set.
The description stored in the exe is Desktop Window Manager.
File version 6.3.9600.17415 (winblue_r4.141028-1500).
Publisher Microsoft Corporation.
Legal copyright notice © Microsoft Corporation. All rights reserved..
This exe does NOT have visible windows. This is usually a bad sign.
dwm.exe is digitally signed. Today the large majority of clean programs are digitally signed.
The digital signature extracted from dwm.exe verifies as ok. This is excellent.
Digital certificate name: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This executable does NOT have an uninstall routine stored in registry.