Hi evilttk,
You have been hit with ransomware, unfortunately. There is no security product which can decrypt your files- they must be restored from a known-good backup.
Here is an intro to Ransomware:
Protect against Ransomware with Symantec Endpoint Protection
https://www.youtube.com/watch?v=4QtFacd9NRM
Use Symantec Endpoint Protection to Protect against Ransomware and Zero-Day Vulnerabilities
https://www-secure.symantec.com/connect/blogs/use-symantec-endpoint-protection-protect-against-ransomware-and-zero-day-vulnerabilities
A new white paper:
Special Report: Ransomware and Businesses 2016
https://www.symantec.com/connect/blogs/report-organizations-must-respond-increasing-threat-ransomware
A good article:
Ransomware protection and removal with Symantec Endpoint Protection
http://www.symantec.com/docs/HOWTO124710
This new three minute video contains a lot of good information about Ransomware and how to fight it.
Ransomware – A Growing Menace
https://www.youtube.com/watch?v=JMxi9PaJaJ4
Many practical tips:
Ransomware Do's and Dont's: Protecting Critical Data
https://www-secure.symantec.com/connect/blogs/ransomware-dos-and-donts-protecting-critical-data
Please do mark this thread solved if you have received your answer, or update it with any additional questions.
With thanks and best regards,
Mick