dashost.exe is a application which is probably NOT a virus. So, if dashost.exe is on your system, it is probably ok, and will NOT cause problems. 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 yourself your PC against threats.
This application is usually stored on disk in C:\Windows\System32\dasHost.exe.
The MD5 checksum for this program is 0967a14066601a948a32b12c5858cb4c.
This program does NOT operate as a Windows service. This is usually a good sign.
This program uses the net to communicate. Today this is ok. For example, most of the programs on your PC check for updates. In order to do this, Internet communications are necessary.
dashost.exe appears to have something to do with Windows SFC (System File Checker) or Windows File Protection.
64-bit code has been detected. This exe can use the full power of a modern computer processor.
dashost.exe has a digital signature. Nowadays the large majority of legit programs are digitally signed.
The digital signature found in dashost.exe verifies as ok. This is very good.
Digital certificate name: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This application does NOT have a removal routine set up in registry.