msasvc.exe is related to a Backdoor (IRCBot) Trojan that uses rootkit technology, installs itself as a service in your system 32 folder and may install other files.
Please follow the instructions provided by TheTerrorist_75 for posting a hijackthis log. This will help us to identify any other malware installed by this bot. Further, there are specialized tools for dealing with this infection which will be provided by the HJT Team staff member who will assist you.IMPORTANT NOTE
: Backdoor Trojans
are very dangerous
because they provide a means of accessing a computer system that bypasses security mechanisms. Remote attackers use back door Trojans as part of an exploit to to gain unauthorized access to a computer and take control of it without your knowledge. When infected by one of them you should disconnect the computer from the Internet until your system is cleaned. If your computer was used for online banking or has credit card information on it, all passwords should be changed immediately to include those used for email, eBay and forums. You should consider all your passwords to be compromised
. They should be changed by using a different computer and not the infected one. Do not change passwords or do any transactions while using the infected computer because an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breech. Because your computer was compromised please read How to report ID theft, fraud, drive-by installs, hijacking and malware