Trojan:Win32/Sirefef.AL is a component of notorious Win32/Sirefef family which should be regarded as a malicious Trojan infection like Trojan:Win32/Sirefef.AG or Trojan:win32/Sirefef:AC. It can bypass the legit security tools and then launch various attacks once it is downloaded. Usually, the virus can be detected by Microsoft security essentials. It keeps showing up the virus but makes it hard to catch and remove the virus completely as Trojan:Win32/Sirefef.AL is a rather stubborn Trojan. When it is is executed on the computer, it may modify Internet browser plug-ins to switch advertisements when visiting a website. Thus, a number of pop-up advertisements may be flooded your desktop or browser. Besides, it adds malicious codes to your system without your permission and may make your PC restarts automatically again and again. The nasty Trojan can take full control of your Internet activities. What’s worse, it can make all the personal or confidential information secretly passed over to the intended attacker who would further misuse it for stealing money from your bank account or leaking the confidential information out to other sources. In a word, such highly dangerous Trojan could completely compromise your computer by exploiting system security leaks. It should be eliminated immediately once upon detection.
Slow down your PC speed notably.
Add other dangerous Trojan or Spyware to your system secretly.
Allow the hacker to access your entire system
Collect all your personal information and transfer to a remote hacker.
Destroy critical system files and make PC unstable.
From malicious drive-by-download scripts from corrupted porn and shareware / freeware websites.
Through spam email attachments, media downloads and social networks.
When clicking suspicious popups or malicious links.
Open unknown email or download media files that contain the activation code of the virus.
Note: No matter how does the virus access your PC, users should know that there are no tools can remove this pesky Trojan automatically at this moment, it is suggested users not spend much time in downloading or paying any security software which claims can delete this stubborn virus. It is totally useless. To completely get rid of this pest, professional manual guide is needed.
1. Reboot your computer to safe mode with networking. As your computer restarts but before Windows launches, tap “F8” key constantly.
2. Show hidden files and folders.
Open Folder Options by clicking the Start button, clicking Control Panel, clicking Appearance and Personalization, and then clicking Folder Options.
Click the View tab.
Under Advanced settings, click Show hidden files and folders, uncheck Hide protected operating system files (Recommended) and then click OK.
3. Open Registry entries. Find out the malicious files and entries and then delete all.
Attention: Always be sure to back up your PC before making any changes.
a. Press the “Start” button and then choose the option “Run”. In the “Open” field, type “regedit” and click the “OK” button.
b. All malicious files and registry entries that should be deleted:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\random
Manual removal of Trojan:Win32/Sirefef.AL requires Expertise, Please take care before performing the steps. If you failed to remove this Malware, you are welcome to contact PC expert to fix the problem.
Published by & last updated on August 18, 2012 4:19 am