zalo.exe is a program which is probably NOT a virus. So, if zalo.exe is on your computer, it is probably 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 PC against potential security problems.
Usually, the default name and folder where this program is stored is
C:\Users\UserName\AppData\Local\Zalo\Zalo.exe.
The MD5 fingerprint for this file is aebbe13dae5c16bcb02bfd595d69a4c0.
This program does NOT run as a Windows service. This is usually a good sign.
This application uses the Internet to communicate. In this day and age this is expected from a program. For example, most of the programs on your PC check for new updates. For this, Internet communications are necessary.
This app runs in 32-bit mode. It can not benefit of the full set of features of current computer processors. This is quite normal because the authors did not upgrade it to use the x64 instruction set.
zalo.exe appears to have visible windows. This is good because it doesn't work in a kind of invisible mode. Its activity is clearly shown to you.
A digital signature is missing from this program. The authors did not sign it. This is probably bad.
It has an uninstall string in registry, which is good. si are uninstall.