There is a hacked version of the popular VLC media player. Instead of installing VLC, it starts installing, then asks you to send an SMS to a number. They then send you a code in return to continue installation.
This is wrong. The people that hacked this installer are just trying to make money from your SMS’s. At the moment it’s been detected in the French version of VLC but it could apply to any language.
The real VLC player never asks you to send an SMS. The real VLC player can be downloaded from: http://www.videolan.org/vlc/
If you download it from anywhere else you end up putting your PC at risk. Always download files from the original vendor’s web site. You can search Google to find it.