What is csrss.exe? Should I remove it?

by Ugnius Kiguolis - -
csrss.exe

Csrss.exe is a legitimate Windows process which might be exploited by criminals

Questions about csrss.exe

Csrss.exe is an entirely safe Client Runtime Server Process by Microsoft Windows. This executable file[1] is responsible for managing graphical instruction sets and usually located in C:\Windows\System32 directory. Note that this legitimate file should take between 4 000 – 7 000 bytes of disk space on your computer. Although, experts have recently detected Csrss.exe trojan which uses the same name as this Windows process to hide its presence on the system. 

Name Csrss.exe
Type System file
Relation Windows Client Server Runtime Process
Distribution Spam email attachments, fake updates
Elimination If the process is malicious download and install Reimage

Initially, the csrss.exe process was used for a whole graphical system, including drawing on the screen, managing windows and similar functions. With the release of Windows NT 4.0 (release date – 1996), many of these functions were moved to Windows kernel, although the process still retained responsibility of console windows and shutdown process.

Therefore, CSRSS process is an essential part of Windows, and cannot be terminated. Even if the user tries to end its task, the OS will warn that the machine will not be able to operate correctly without it, and shut down. If clicked through, windows will merely deny the shutdown of the device – it is done as a precaution to avoid system damage.

That being said, the fact that this is a standard system process, malware authors may use this name as a disguise. Any executable file should be treated as a potential threat, even if they use a legitimate name. The malicious version of the file can be used for the suspicious activity, such as: 

  • personal information collection
  • arbitrary files download
  • digital currency mining[2]
  • infiltration of additional malware

Csrss.exe is a legitimate and essential file for Windows; therefore, executables can be replaced, duplicated or removed by malicious ones. If you noticed that more than two csrss.exe processes are running on your Windows system, you should scan your machine with anti-malware software, as it is one of the malware infection signs.

To conclude, the Client Runtime Server Process is a vital component of Windows which should run at all times. However, if you see several processes running in the task manager, you should immediately use Reimage or other reputable security software to remove the csrss.exe virus from your device.

Malicious programs do not ask direct permission when entering the system

Dangerous cyber threats, are created in a sophisticated way to make sure that they are able to hide their presence and avoid any suspicious activity on the computer. Likewise, criminals also name them as completely legitimate system processes to trick the users into believing that they are trustworthy. Additionally, there are other tricky distribution methods which help criminals make their infections persistent.

Therefore, it is essential to be aware that malware can be injected in the following ways:

  • spam emails
  • repacked or cracked software
  • keygens or similar executables
  • malicious websites
  • weak RDP passwords
  • software vulnerabilities, etc.

Therefore, always take precautions when browsing the internet, especially when it comes to spam emails, as it is the most prominent malware spreading method used by cybercriminals. Do not open attachments and, if needed, make sure that the email is legitimate before you open it.

Finally, we recommend avoiding file-sharing websites, updating software on a regular basis and scanning the machine using security software.

Get rid of Csrss.exe malware if necessary

Note that the name of Csrss.exe Windows process might be abused by hackers to hide malicious programs on the system. Although, experts from NoVirus.uk[3] say that it is hard to determine whether the executable file is potentially dangerous or not. 

Typically, dangerous malware is capable of hiding itself well and even avoid detection by the AV engine, so it might be difficult to remove Csrss.exe malware. Best way to bypass such functionality is by entering Safe Mode with Networking and performing full system scan using Reimage, Malwarebytes or Plumbytes Anti-MalwareNorton Internet Security.

On another note, we urge users not to perform manual Csrss.exe virus removal, as it can damage the machine even further. Instead, let a profession security software do the job automatically.

verdict - status of the file:
diagnosis required
Advice: If your computer seems sluggish, or you are suffering from unwanted advertisements and redirects to unknown websites, we highly recommend you to scan it with reputable anti-spyware program. Do some FREE scan tests and check the system for unwanted applications that might be responsible for these problems.
Offer
We might be affiliated with any product we recommend on the site. Full disclosure in our Agreement of Use. By Downloading any provided Anti-spyware software you agree to our privacy policy and agreement of use.
do it now!
Download
Problem diagnosis program Happiness
Guarantee
Download
Problem diagnosis program Happiness
Guarantee
Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is a recommended tool to scan your system for possible threats and crappy software. The trial version of the product will find harmful applications in your system.
More information about this program can be found in Reimage review.

If you decided to select another anti-spyware, uninstall Reimage from your computer.
Press mentions on Reimage
Alternate Software
Malwarebytes
Alternate Software
Malwarebytes

About the author

Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

If this free removal guide helped you and you are satisfied with our service, please consider making a donation to keep this service alive. Even a smallest amount will be appreciated.

Contact Ugnius Kiguolis
About the company Esolutions

References

Removal guides in other languages


Files
Software
Compare