Windows Efficiency Analyzer is another rogue security application that was originated from the large family of malicious software. Windows Efficiency Analyzer is distributed by fake online virus scanner and usually get helped by a Trojan to drop itself on target computer. It will find security and software vulnerabilities that it can exploit to be able to infect a system. Once the Trojan has contracted a computer, it will modify its Internet browser and redirect all search results to unsolicited malicious web sites where a copy of Windows Efficiency Analyzer virus is waiting to be downloaded. If the rogue application was successfully installed, victims may encounter excessive pop-up alerts that are falsified and cause by Windows Efficiency Analyzer infection.
While the bogus program still resides on the computer, it will continuously attempt to convince user that computer is infected and a licensed copy of Windows Efficiency Analyzer is needed. There is a possibility that victims may fall into this trick just to end PC’s annoying activities. It is not recommended to obtain the rogue program. The best solution is to download a legitimate anti-malware application and do a complete scan of the infected computer. The rest of the procedure can be found on this page.
Damage Level: Medium
Systems Affected: Windows 9x, 2000, XP, Vista, Windows 7
Technical Details and Additional Information:
A bunch of fake alert messages will be issued in order to entice users to obtain the Windows Efficiency Analyzer registration key. Some of these are:
System Security Warning
Attempt to modify register key entries is detected. Register entries analysis is recommended.
Malicious Files Added by Windows Efficiency Analyzer:
Windows Efficiency Analyzer Registry Entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ekrn.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msascui.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msmpeng.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\afwserv.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avastsvc.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avastui.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\egui.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore “DisableSR ” = ‘1’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings “WarnOnHTTPSToHTTPRedirect” = ‘0’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings “WarnOnHTTPSToHTTPRedirect” = ‘0’
How to Remove Windows Efficiency Analyzer
Systematic procedures to get rid of the threat are presented on this section. Make sure to scan the computer with suggested tools and scanners.
Step 1 : Scan the computer with recommended removal tool
1 First thing you should do is reboot the computer in Safe Mode with Networking to avoid Windows Efficiency Analyzer from loading at start-up.
NOTE: You will need to PRINT or BOOKMARK this procedure, as we have to restart the computer during the removal process.
Remove all media such as Memory Card, cd, dvd, and USB devices. Then, restart the computer and please do the following:
Boot in Safe Mode on Windows XP, Windows Vista, and Windows 7 system
a Before Windows begins to load, press F8 on your keyboard.
b It will display the Advanced Boot Options menu. Select Safe Mode.
Start computer in Safe Mode using Windows 8 and Windows 10
a Close any running programs on your computer.
b Get ready to Start Windows. On your keyboard, Press and Hold Shift key and then, click on Restart button.
c It will prompt you with options, please click on Troubleshoot icon.
d Under Troubleshoot window, select Advanced Options.
e On next window, click on Startup Settings icon.
f Lastly, click on Restart button on subsequent window.
g When Windows restarts, present startup options with numbers 1 - 9. Select "Enable Safe Mode with Networking" or number 5.
h Windows will now boot on Safe Mode with Networking. Proceed with virus scan as the next step.
2 Download our malware removal tool and save it on your Desktop or any location on your PC.
3 Click on the button to start downloading our recommended anti-virus tool. Save it to an accessible location inside your hard drive or clean USB drive if you are downloading from a different PC.
4 When finished downloading, locate and double-click the file to install the application. Windows' User Account Control will prompt at this point, please click Yes to continue installing the program.
5 Follow the prompts and install as 'default' only. There are no changes needed during the installation process.
6 Malwarebytes Anti-Malware will launch for the first time. It is necessary to proceed with software update.
7 After downloading updates, please click on Scan Now button.
8 The tool willl run Threat Scan to ensure that it thoroughly check the PC for any presence of Windows Efficiency Analyzer and other forms of threats.
9 Once the scan has completed, Malwarebytes Anti-Malware will issue a list of identified threats. Mark all threats and click on Quarantine Selected.
10 If it prompts to restart the computer, please reboot Windows.
Step 2 : Ensure that no more files of Windows Efficiency Analyzer are left inside the computer
11 Click on the button below to download Norton Power Eraser from official web site. Save it to your desktop or any location of your choice.
12 After downloading, navigate its location and double-click on the NPE.exe file to launch the program.
13 Norton Power Eraser will run. If it prompts for End User License Agreement, please click on Accept to proceed.
14 On NPE main window, click on Advanced Scans. We will attempt to remove "Windows Efficiency Analyzer" by thoroughly scanning your current operating system.
15 On next window, click System Scan to perform standard scan on your computer.
16 NPE will proceed with the scan. It will search for Trojans, viruses, and malware like Windows Efficiency Analyzer. This may take some time, depending on the number of files currently stored on the computer.
17 When scan is complete. All detected risks are listed. Click on Fix Now to remove Windows Efficiency Analyzer and other known threats. Then, restart Windows if necessary.
Step 3 : Remove the Rootkit Trojan that installs Windows Efficiency Analyzer
Rootkit Remover is a stand-alone utility developed by McAfee. It can be used to detect and remove rootkit Trojan that is associated with Windows Efficiency Analyzer. This tool can detect rootkit that is part of ZeroAccess, Necurs, and TDSS family.
18 Download Rootkit Remover and save it to your desktop or any accessible location. Click the button below to begin the download.
19 Locate the file rootkitremover.exe and double-click to run the program.
20 When User Account Control prompts if you want to allow the program to make changes on the computer, please click Yes.
21 Rootkit Remover instantly scans the computer and look for presence of Trojans, viruses, and rootkit that is related to Windows Efficiency Analyzer .
22 Once it finishes scanning the computer, the tool will require you to restart Windows.
Alternative Removal Procedures for Windows Efficiency Analyzer
Use Windows System Restore to return Windows to previous state
During an infection, Windows Efficiency Analyzer drops various files and registry entries. The threat intentionally hides system files by setting options in the registry. With these rigid changes, the best solution is to return Windows to previous working state is through System Restore.
To verify if System Restore is active on your computer, please follow the instructions below to access this feature.
Access System Restore on Windows XP, Windows Vista, and Windows 7
a Go to Start Menu, then under 'Run' or 'Search Program and Files field, type rstrui.
b Then, press Enter on the keyboard to open System Restore Settings.
c Windows will display list of saved restore points. Select the most recent one to restore Windows to previous working and clean state.
d It may take some time to fully restore back-up files. Restart Windows when done.
Open System Restore on Windows 8 and Windows 10
a For Windows 8 user, go to Start Search, while on Windows 10, use the Start Menu Search and type rstrui.
b Click on the located program to open System Restore window.
c Windows will display list of saved restore points if it is active. Select the most recent one to restore Windows to previous working and clean state.
d It may take a while to fully restore back-up files. Restart Windows when done.
If previous restore point is saved, you may proceed with Windows System Restore.
Did Windows Efficiency Analyzer blocks your Internet access?
It is usual that rogue program prevents user from downloading removal tools from the Internet. Thus, infected computer may be denied to access the Internet by making changes to computer's proxy, DNS, and Hosts file. To solve Internet connection problem, please see our guide in fixing a virus-blocked Internet access. Also, make sure that your Windows Host File is free from any malicious entries. View steps in cleaning Windows host file.