This article reveals how you can remove csrss.exe malware infection completely from your PC and provides protection measures against future malware attacks.
Csrss stands for Client/Server Runtime Subsystem. It is an essential Windows subsystem that must always be running. As csrss.exe is a common system process malware infections often use its name as a disguise.
Csrss.exe infection may occur after an unnoticed installation of a potentially unwanted program on the PC. The threat may also land on the system via a malicious email attachment. Once csrss.exe is running on the system it can utilize the power of your CPU/GPU to mine digital currencies like Monero, Bitcoin, Ehereum and other. Being overloaded for a long time these components can break down irreversibly. Find out how to detect an infection with csrss.exe mining malware and remove it completely from the PC.
Threat Summary
| Name | csrss.exe |
| Type | Cryptocurrency Miner Malware |
| Short Description | Aims to use the CPU’s or GPU’s resources of your computer to mine for cryptocurrencies. |
| Symptoms | After infection the miner overloads the CPU’s and GPU’s resources for extended period of time. |
| Distribution Method | Via malicious e-mail spam attachments or compromised software installers. |
| Detection Tool |
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Csrss.exe Malware – Distribution Methods
Several different methods may be used for the distribution of the malicious csrss.exe mininer malware. One of the most preferred ways for its distribution is via compromised email attachments. The attachments may be one of the following file formats:
→.docm, .vbs, .wsf, .js, .exe
Usually, the e-mails are with a spoofed e-mail address and sender who pose as a representative of a legitimate organization so you are more likely to believe it is a safe file and infect your system with the miner by opening the attachment on your PC. The attachments may be defined as invoices, banking statements, purchase receipts, order confirmation files and other.
Another way to infect your system with csrss.exe malware is via the installation of a potentially unwanted program on the computer. Such programs can be found on various torrent websites and file sharing services.
Csrss.exe Malware – Impact
Csrss stands for Client/Server Runtime Subsystem. It is an essential Windows subsystem that must always be running. The legal Microsoft process csrss.exe is responsible for console windows, creating and/or deleting threads, and implementing some portions of the 16-bit virtual MS-DOS environment. Its termination results in Blue Screen of Death.
As hackers know that csrss.exe is a common system process they often give the same name of their malware aiming to disguise it and prevent its detection. One of the ways to distinguish the legitimate csrss.exe file from the malicious one is to check its location. The Windows core system file csrss.exe is labeled as Client Runtime Server Process and is located in:
→C:\Windows\System32
If a file named csrss.exe is located in any other folder, it can be considered as a malware. It is believed that the fake csrss.exe process may be used as a disguise of a cryptocurrency miner malware. The primary purpose of such a miner is to utilize your PC resources for mining cryptocurrencies like Bitcoin, Monero, Ethereum and other. So after infection, you may notice that the computer’s CPU activity is higher than usual.
Overloads of the graphics card can also occur once the csrss.exe miner malware is running on the system. Other side effects of an infection with the malicious csrss.exe miner are PC slowdowns, freezes, and even system crashes.
Remove Csrss.exe Infection from Your Computer
A fake csrss.exe process can be used by malicious intenders who want to use the resources of your CPU/GPU to mine digital currencies. Due to its harmful behavior, it should be eliminated as soon as it is noticed. Otherwise, it can damage irreversibly some essential PC components and cause additional malware infections. The steps in the guide below reveal how to remove the malicious csrss.exe process completely from the PC. You can choose whether to remove it manually or automatically.
Have in mind that the termination of the safe csrss.exe system process will cause system failure. Thus, the assistance of an advanced anti-malware tool is recommended by security experts. Such tool will detect the malware miner disguised as csrss.exe as well as all other malicious files on the system. After the scan, you will be able to remove them with a few mouse clicks.
Gergana Ivanova
Highly motivated writer with 5+ years of experience writing for ransomware, malware, adware, PUPs, and other cybersecurity-related issues. As a writer, I strive to create content that is based on thorough technical research. I find joy in the process of creating articles that are easy to understand, informative, and useful. Follow me on Twitter (@IRGergana) for the latest in the field of computer, mobile, and online security.
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- Guide 1: How to Remove csrss.exe from Windows.
- Guide 2: Get rid of csrss.exe from Mac OS X.
- Guide 3: Remove csrss.exe from Google Chrome.
- Guide 4: Erase csrss.exe from Mozilla Firefox.
- Guide 5: Uninstall csrss.exe from Microsoft Edge.
- Guide 6: Remove csrss.exe from Safari.
- Guide 7: Eliminate csrss.exe from Internet Explorer.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
How to Remove csrss.exe from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove csrss.exe
Step 2: Uninstall csrss.exe and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:
Follow the instructions above and you will successfully uninstall most programs.
Step 3: Clean any registries, created by csrss.exe on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by csrss.exe there. This can happen by following the steps underneath:
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Get rid of csrss.exe from Mac OS X.
Step 1: Uninstall csrss.exe and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove csrss.exe via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
→ ~/Library/LaunchAgents
/Library/LaunchDaemons
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove csrss.exe files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as csrss.exe, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Remove csrss.exe from Google Chrome.
Step 1: Start Google Chrome and open the drop menu
Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"
Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.
Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Erase csrss.exe from Mozilla Firefox.
Step 1: Start Mozilla Firefox. Open the menu window
Step 2: Select the "Add-ons" icon from the menu.
Step 3: Select the unwanted extension and click "Remove"
Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Uninstall csrss.exe from Microsoft Edge.
Step 1: Start Edge browser.
Step 2: Open the drop menu by clicking on the icon at the top right corner.
Step 3: From the drop menu select "Extensions".
Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.
Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Remove csrss.exe from Safari.
Step 1: Start the Safari app.
Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
Step 3: From the menu, click on "Preferences".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the csrss.exe will be removed.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Eliminate csrss.exe from Internet Explorer.
Step 1: Start Internet Explorer.
Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'
Step 3: In the 'Manage Add-ons' window.
Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.
Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.
