How to decipher index.php in Joomla?

Hello!
Such a problem, the site ceased to work, gives 500 error, went to index.php and there krakozyabry (attached file)
If instead of the file to throw another index.php its contents are displayed without problems
What it could be, virusnyak?

File attached
April 19th 20 at 12:17
0 answer

Find more questions by tags Joomla