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  1. Windows 8.1, Windows 7 anti-malware service executable file-A problem with this process can affect both Windows 8.1 and 7, but even if you are not using Windows 10, you can solve the problem using one of our solutions. The executable file of the anti-malware service constantly works, slowing down the computer. Many users have reported that this.
  2. R/Malware: A place for malware reports and information. Hey all, To make a long story short, after a little over five years of military service, I was just recommended for medical separation or retirement depending on my disability percentage as a result of an injury.
  3. Antimalware Service Executable is a process used by Windows Defender to protect you real-time for any threats. What I recommend you to do is to change the triggers that starts this process and set it only whenever the device is idle. Follow these steps.

Antimalware Service Executable is a part of Windows Security (previously called Windows Defender), and is designed to perform security tasks in the background. In general, Antimalware Service can take up to 50% RAM, while Windows Security is performing a real time scan, full system scan or updating virus definitions on your computer.

Most of us have security software such as an antivirus, antimalware, firewall or Host Intrusion Prevention System (HIPS) installed to help protect our computer against known or unknown malware. Malicious software can be very sneaky, getting onto your computer when you least expect it and stay hidden until the security software finally detects it. By then, the damage has already been done since the virus has been active and you wouldn’t know what information has been stolen from your computer.

The question is, how do you know if the antivirus or antimalware installed is actually protecting your computer? The program would probably state that your computer is protected or the protection is enabled but how can you be sure that it is really working and confirm if the antivirus or its virus definition hasn’t been tampered with? Searching for a real virus from the Internet and downloading it to your computer just to test if your antivirus can detect it may not be the best option because you’re risking your computer being infected by it if you’re not careful.

Here we have 6 ways how you can safely test your antivirus to see if the real time protection is truly enabled and working to protect your computer against viruses.

1. EICAR

A few antivirus researchers have come up with a harmless file that is detected as if it were a virus and is distributed at EICAR. So in short, the EICAR antimalware test file does nothing and is absolutely harmless even if it is run on the computer. The EICAR test file can be easily created with a Notepad that starts with the 68 characters below and save it as COM or EXE extension.

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X5O!P%@AP[4PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

If your antivirus real time protection is working, it should automatically detect the EICAR as a threat and remove the file from your computer.

If the EICAR test file is not being detected, there is something wrong with the antivirus program and you should check the real time protection settings, try reinstalling, or maybe it is a rogue/fake antivirus program. At the time of writing, 49 out of 52 antivirus from VirusTotal is able to detect the EICAR antivirus test file.

Download EICAR

2. Comodo Leak Tests

The Comodo Leak Tests program is created by security company COMODO who are well known for their free antivirus which is also allowed to be used commercially on corporate and business environment.

The Comodo Leak Tests tool is actually meant to test for leaks in firewall and HIPS programs but most antivirus nowadays have behavioral analysis to detect if an unknown program is performing an action that can pose a security risk on a system.

All you need to do is run the program and click on the Test button which will automatically run 34 different tests ranging from rootkit installation, invasion, injection, sending information, impersonation, and system hijacking.

As you can see in the screenshot above, Trend Micro Titanium Internet Security blocked the program because it detected suspicious behavior.

Download Comodo Leak Tests

3. Trojan Simulator

Trojan Simulator is a program that simulates a trojan being installed on a computer by adding a startup entry in the registry at HKEY_LOCAL_MACHINE and runs the harmless TSServ.exe file in memory. This is what a common and simple trojan would do but the more sophisticated ones would use advanced technique such as rootkit installation.

To test Trojan Simulator on newer Windows operating systems such as Vista, 7 and 8, you will need to right click on the TrojanSimulator.exe and select “Run as Administrator” or else you will receive an error message saying “Failed to set data for TrojanSimulator”. Quite a number of antivirus can already detect Trojan Simulator. So if you can’t download or run Trojan Simulator because your antivirus blocked it, it is a good sign that your antivirus is working.

Download Trojan Simulator

4. System Shutdown Simulator

System Shutdown Simulator has the ability to create the EICAR antimalware test file with the click of a button but it goes further by letting you test if the EICAR can be detected when an antivirus most likely would have been closed when a system shutdown is being initiated. Other than that, it can also create an auto start registry entry to test HIPS and also a silent download and automated execution of file for firewall testing.

The steps to use System Shutdown Simulator are pretty self explanatory. Run the program as administrator, click on Intercept System Shutdown Call button first. Then, click on the Shutdown Computer button where your computer will attempt to shut down but will notify you that an app is prevent you from signing out. Click the Cancel button to call off the shutdown and once you’re back in desktop, you will probably notice that the antivirus program icon at the notification area is no longer there. Now try clicking on “Create Eicar Test File” button and see if your antivirus is able to warn you that it detected Eicar test file.

Download System Shutdown Simulator

5. Zemana Simulation Test Programs

Zemana is the maker of AntiLogger which is very effective against zero-day malware that is yet to be detected by antivirus software. They’ve created and released 3 test programs that simulate the functionality of a keylogger, webcam logger, and a clipboard logger that are normally present in a trojan.

Your antivirus software might not detect any suspicious activity from the Zemana simulation test programs because they simply only activate one of the actions which is not enough to trigger the alert. An antivirus software is meant to be smart and not to nag you on every action it detects on your computer. Skype is an example of a legitimate program that may enable your Webcam for web conferencing and it doesn’t make sense for your antivirus to block it or to ask you for further actions.

Download Zemana Simulation Test Programs

6. SpyShelter Security TestTool

SpyShelter is a competitor of Zemana and their security test tool contains a lot more actions such as sound recording, system protection, screenshot & webcam capture, keylogging and clipboard monitoring. The screenshot test itself contains 11 different methods that can be used by a malware to capture screenshots on your computer.

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Similarly to Zemana Simulation Test Programs, your antivirus software may not complain when you activate any of the monitoring functions from SpyShelter Security TestTool. Weirdly Trend Micro Titanium Security actually detected and blocked the program when we tried the “Registry access test1” from System protection. That detection only happened once but not again when we retested it.

Download SpyShelter Security TestTool

Final Note: We would like to stress that all of the mentioned programs above to test if your antivirus real time protection is working or not are harmless even if they are detected as a threat. If your antivirus detects any of the simulation test programs above, then rest assured that your antivirus is working. If not, you should double check the antivirus software installed on your computer.

You might also like:

5 Free Software to Scan your Computer with Multiple Antivirus EnginesMemory Usage Test to See Which is the Lightest Antivirus SoftwareTest Sleep and Hibernation Feature in Windows 73 Cloud Based Antivirus Software Review6 Ways to Kill and Remove Fake Antivirus Rogue Software

madhu3 years ago

zemana antimalware is best is block fraction of second.

Reply

links outdated

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Carl Gottlieb5 years ago

TestMyAV.com contains real fresh malware, updated twice per day and available to download for testing.

Reply

May I propose LHFC (low hanging fruit collector)? It has everything covered from local host to network to advanced tunneling techniques: phishing-server.com/PS/doc/dokuwiki/doku.php?id=create_a_purely_technical_test_with_the_malware_testing_suite

Reply
Edge Gaming5 years ago

I tried out the EICAR test three times, and then i tried the comodo test.

Panda couldn’t detect the Comodo test.

Reply

There is also wicar.org to test anti malware filtering software.

Best Anti Virus And Anti Malware Software

Reply
Sir Mauricius7 years ago

Thanks Raymond

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The Antimalware Service Executable process plays an important role in the Windows Defender Service that comes bundled with Windows 10 (and, despite the similarities in name, is completely unrelated to Emsisoft Anti-Malware!). However, it’s also infamous for consuming far more than its fair share of CPU processing power, and can even single handedly reduce your computer’s speed to a glacial crawl.

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If you’re a Windows Defender user and have noticed high CPU usage for abnormally long periods of time, you’ll be pleased to know that the issue can easily be resolved.

In this article, we’ve put together a few simple steps you can follow to prevent Antimalware Service Executable from hogging your system’s resources and keep your machine running smoothly.

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What is the msmpeng.exe Antimalware Service Executable?

Do you use Windows Defender to protect your computer? If so, open up the Windows Task Manager (Ctrl + Shift + Esc or Start Menu > Task Manager), scroll through the list of background processes and you will find a process called Antimalware Service Executable and its corresponding file msmpeng.exe.

This process allows Windows Defender to continuously monitor your computer for potential threats and provide real-time protection against malware and cyberattacks. At the same time, however, it can also be the cause of disproportionately high CPU usage.

Another Windows Defender feature that may be responsible for slowing down your system is its Full Scan, which performs a comprehensive check of all files on your computer. Full Scan relies heavily on the CPU and is not afraid to use whatever resources your system has available; as a result, you may experience lag, delays, hanging and other system disruptions when it is running.

While it is normal for antivirus programs to consume system resources when running a scan, Windows Defender is far greedier than most. It is known to use excessive CPU for longer periods of time and carry out scans right when you’re waking up the computer to quickly send an email or check a website.

Although this can be frustrating, it’s important that you don’t disable Windows Defender without first installing another IT security solution – after all, it may be the only thing that stands between your computer and the bad guys! Let the program do its job, resolve any threats and then follow these steps to prevent the issue from happening again:

Fix #1: Change Windows Defender’s scheduling options

For most people, the high memory usage caused by Antimalware Service Executable typically happens when Windows Defender is running a full scan. We can remedy this by scheduling the scans to take place at a time when you’re less likely to feel the drain on your CPU.

  1. Open the Start menu, type “task scheduler” and click the top result to launch the program.
  2. In the navigation pane on the left, double click Task Scheduler Library. Continue to expand these folders and navigate to the following destination: Library/Microsoft/Windows/Windows Defender.
  3. When you have opened the Windows Defender folder, double click Windows Defender Scheduled Scan, located in the middle pane.
  4. Click the Conditions tab, uncheck all optionsand click OK. This will clear your scheduled scans.
  5. To protect your computer, it is important to schedule some new scans, but we can do this in a way that will reduce the impact on your system’s performance. To do so, double clickWindows Defender Scheduled Scan, select the Triggers tab and click New.
  6. Create a new scan schedule that suits your needs, selecting options that strike the balance between protection and system efficiency. As a guideline, we recommend (at minimum) weekly scans at a time when you’ll be unlikely to notice the increased CPU usage.
  7. Repeat the process for the three remaining services (Windows Defender Cache Maintenance, Windows Defender Cleanup, Windows Defender Verification) found in the Library/Microsoft/Windows/Windows Defender folder.
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Fix #2: Add Antimalware Service Executable to Windows Defender’s exclusion list

During its scans, Windows Defender checks every single file on your computer – including itself. This can occasionally result in some interesting interactions and is a common source of system lag. To prevent this from happening, you can simply instruct Windows Defender to skip itself when performing a system scan.

  1. Press Ctrl + Shift + Esc to open Windows Task Manager.
  2. In the list of processes, search for Antimalware Service Executable. Right click on the process and select Open File Location.
  3. In the address bar, you’ll see the full path of Antimalware Service Executable. Click on the address bar and copy the full path.
  4. Open the Start menu, type “windows defender” and click the top result to launch the Windows Defender Security Center.
  5. Click on Virus & threat protection, then on Virus & threat protection settings.
  6. Scroll down until “Exclusions” and click Add or remove exclusions. In the next screen, click on Add an exclusion, select Folder and paste the path to Antimalware Service Executable (MsMpEng.exe) in the address bar. Finally click Open and the folder will now be excluded from the scan.

Fix #3: Disable Windows Defender

If the problem persists after applying the first two fixes, you might be tempted to resort to disabling Windows Defender altogether. Keep in mind that doing so leaves you vulnerable to a range of cyberattacks, so it’s critical that you install an effective anti-malware product on your computer before removing Windows Defender.

Disable Windows Defender altogether using the Registry Editor.

  1. Press Windows Key + R to open the Run Dialog Box.
  2. In the Run Dialog Box, type regedit and click OK to open the Registry Editor.
  3. In the navigation pane on the left, double click the folders to navigate to HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindows Defender.
  4. If you find a registry entry named DisableAntiSpyware, double click it and set its value data to 1.

4b. If you do not see a registry entry named DisableAntiSpyware, right click in the main Registry Editor pane and select New > DWORD (32 bit) Value.

4c. Name this new registry entry DisableAntiSpyware. Double click it and set its value data to 1.

Fix #4: Check for malware infections

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It’s possible that something more malevolent is causing Windows Defender to disrupt your computer’s performance. Run a full system scan using a reputable and lightweight anti-malware solution such as Emsisoft Anti-Malware (we have a 30-day free trial available) to check your computer for any malware that may be affecting your computer’s ability to run smoothly and safely.

Windows Defender is a valuable tool, particularly since it comes free with your operating system, but it can certainly put a drain on your system’s CPU. By following the steps described in this article, you’ll be able to take control of Antimalware Service Executable and keep your computer running at full speed.

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Have an awesome (malware-free) day!