dashost.exe is a program which is most likely NOT a virus. So, if dashost.exe is on your computer, it is most likely ok, and will NOT be a cause for concern. Even if your PC is clean, we still advise you to run a well-known antivirus with a good track record, in order to defend your system against threats.
Normally, this application is stored in C:\WINDOWS\system32\dashost.exe.
The MD5 fingerprint for this file is fd83c3389817c5246fe544eee63e4115.
This program does NOT run as a Windows service. This is normally a good sign.
dashost.exe seems to have something to do with Windows SFC (System File Checker) or Windows File Protection.
This is a x64 executable. It runs using the full capacity of nowadays' computer processors.
dashost.exe is digitally signed. Nowadays most serious programs are digitally signed.
The digital signature attached to dashost.exe checks out perfectly. This is very good.
Digitally signed by: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This program does NOT have an uninstall routine stored in registry.