Sirefef virus is s multi-component malicious Trojan that replaces or overwrites some important system files from an infected computer with its own maliciously encoded files. This malware is a rootkit that can infect 32 bit and 34 bit windows OS. It may enter into your computer secretly without your consent and permission, then it can bring more spywares and viruses into your machine that will cause your system run really slow. Sireefef virus is too smart to hide itself into system DLL files and other important system files, therefore it becomes very hard to remove this malware by Microsoft Security Essential which detects it as Win32/sirefef.eb. This virus may cause your computer to brows slowly or even it may cause system crashes. Sirefef.A virus is also known as Zero-Access and Max++ .This virus is also spread as declared to be a legitimate system utility or crack software or a shareware. It will collect personal data from infected computer which is saved with a random directory name under system32 folder.
ZeroAccess Sirefef virus may also cause your browser to redirect to unwanted web pages while browsing or searching something on a search engine like Google and Bing etc. Sirefef virus is known to be causing Happili.com redirect and Google redirection.
To remove this virus Automatically, We suggest following tools: