Never download .exe files claiming to be game boosters or specialized CS 1.6 clients from unverified sources.
For those interested in the technical history or visual gameplay of CS 1.6, this video shows how to run the game on alternative platforms: Counter Strike 1.6 on Android - How to Play [No Root] C4ETech English YouTube• May 19, 2016 Cs 1.6 Zeroware