a ZIX file?

what the hell is Zix file- "XX.zix"

Where did you get it?

It is possibly a quicktime file but more likely it is a spyware bait file designed to get you to download Winzix software

Extension: ZIX
Program and/or Extension Function
WinZix Changed File (most likely)

WARNING: WinZix is advertised as a compression tool however it appears from analysis of the files produced that it simply adds information to a file so that WinZix needs to be installed to access it. The program contains an adware component that must be installed with the program and the EULA for that component says you cannot use anti-adware software against it. In addition, use of such software may damage the component and make it difficult to remove. FILExt has removed links to this software and advises that you install it AT YOUR OWN RISK. If you receive a "compressed" ZIX file you are advised to warn the sender and ask them to resend the file in a more conventional format (e.g., ZIP)

LINK

in other words it is a spyware?

Not necessarily. WINZIX most certainly is and if it a file made by that program
then you need that program to uncompress it.

You did not answer my question.

Where did you get it?
Is it part of a game?
If it is the it's probably a video.
If its something you downloaded from the net its probably a trick to get you to download
that program.
It might have been made by someone who was already tricked into thinking WINZIX is a
free kind of Winzip type file compression program.

Google is your friend
Type .ZIX in the search box.

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~edit~

Just to be clear, the file itself is probably not dangerous just dont download the WINZIX program and install it.