Locked360.php virus

Hi guys, i am currently hosting 3 websites in my server using hestia, however i noticed a weird behavior on one of them, and so yes, it got infected. My stie is running joomla and is having exact issue as reported by another user in the joomla forum.
https://forum.joomla.org/viewtopic.php?t=993109
Any suggestion how to deal with this?
thanks

Specifics as to how to best accomplish such nuking are left up to the reader.

The Joomla forum you linked to is likely to be a far more relevance venue for the discussion you seek.

You might see if this helps.