laliz on "Malware removal"

You can clean it yourself too,just need to locate the malware and remove infected code.

EDIT:download the last backup and run it through some malware checker, as i am not on windows and dont require a Virus scanner, i use online website like https://www.virustotal.com/ to scan for any infection, make a zip of your files and upload it to check there.

creating from scratch is hard,you can ask hosting for a older backup from the date you suspect website was hacked and try restoring it.