Remove Trojan:Win32/Sirefef.AN - Useful Removal Instruction

Harms that Trojan:Win32/Sirefef.AN could bring on your computer

A. Discloses user identity or any other confidential information without user knowledge and consent.
B. Rapidly terminates active antivirus, anti-spyware and security-related software processes, disables essential system services and prevents standard system tools from running.
C. Degrades overall system performance, decreases system security and causes software instability. Some parasites are badly programmed, they waste too much computer resources and conflict with installed applications.
D. Provides no uninstall feature, hides processes, files and other objects in order to complicate its removal as much as possible.
E. Demands to pay the ransom.

Overview of Trojan:Win32/Sirefef.AN

Trojan:Win32/Sirefef.AN is a high peril belongs to the multi-component of Win32/Sirefef family. One apparent symptom of this threat is to bypass the detection of antivirus software programs due to its advanced stealth techniques that glue related malicious files on affected computer. Basically, to avoid getting infected with this Trojan infection, you should take note of while downloading free application from unknown resources, or visiting suspicious websites.

As a dangerous Trojan infection, Trojan:Win32/Sirefef.AN has damaged many innocent computers all over the world. It is a caution for computer users that they should pay attention while having the threat of Trojan:Win32/Sirefef.AN as it inserts its malicious codes with MBR settings. Whenever your computer starts, it will run automatically in the background on your affected machine. Keep in mind that delaying removing Trojan:Win32/Sirefef.AN, it will even lead to blue screen and even crash. You should get rid of Trojan:Win32/Sirefef.AN as soon as possible for the sake of protecting computer.

Download Automatic Virus Removal Tool

The best way to remove Trojan:Win32/Sirefef.AN (manual removal)

Trojan:Win32/Sirefef.AN manual removal is your best choice to make your computer safe. Before performing its manual approach, we suggest you back up Windows registry at first for accidental damages or further usage.

Step one: Launch the Task Manager by pressing keys “CTRL + Shift + ESC”, search for Trojan:Win32/Sirefef.AN processes and right-click to end them.

Step two: Click on the “Start” menu and then click on the “Search programs and files” box, Search for and delete these files created by Trojan:Win32/Sirefef.AN:
%AppData%\f6dcfecc
%AppData%\f6dcfecc\U
%Windir%\$NtUninstallKB63471$

Step three: Open Registry Editor by navigating to “Start” Menu, type “Regedit” into the box and click “OK” to proceed. When Registry Editor is open, search and get rid of the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer "NoDesktop" = '1'
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "[random].exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\[random numbers]
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = [random]

Automatic Removal Tool (Recommended)

SpyHunter is a powerful, real-time anti-spyware application that designed to assist the average computer user in protecting their PC from malicious threats like worms, Trojans, rootkits, rogues, dialers, spyware, etc. It is important to notice that SpyHunter removal tool works well and should run alongside existing security programs without any conflicts.

Step 1. Click the Download icon below to install SpyHunter on your PC.


Step 2. After the installation, run SpyHunter and click “Malware Scan” button to have a full or quick scan on your computer.


Step 3. Choose Select all>Remove to get rid of all the detected threats on your PC.

Tips for protecting your computer from Trojan:Win32/Sirefef.AN

•    Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
•    Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
•    Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
•    Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.

Want to safely and completely remove this perky mutating Trojan:Win32/Sirefef.AN virus infection but you cannot figure out a way since various security tools failed to remove it? Click here to download the most popular antivirus program SpyHunter to help you.