COM Surrogate Process (dllhost.exe) – WHAT IS IT + How to Remove It

COM Surrogate Process (dllhost.exe) – WHAT IS IT + How to Remove It

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What is COM Surrogate? How to remove it from your computer? IS COM Surrogate a virus or legitimate?

The COM Surrogate is the name of a legitimate Windows 10 process that is often imitated by iruses and this is why it should be checked before you decide to trust it. Users could locate this process in Windows Task Manager. Having COM Surrogate running in the background does not necessarily mean that your computer has been infected, but usually, some viruses use fake COM Surrogate names as a way to hide themselves from antivirus software. If you see COM Surrogate running on your computer, read this article to learn how to remove it if a virus.

Threat Summary

NameCOM Surrogate virus
TypeWindows Process or a Virus
Short DescriptionThe COM Surrogate (also known as dllhost.exe) may be legitimate Windows proces sor a virus.
SymptomsOne or more COM Surrogate processes running actively In your task manager.
Distribution MethodIf a virus, could be spread via malicious web links or files that pretend to be legitimate.
Detection Tool See If Your System Has Been Affected by COM Surrogate virus


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss COM Surrogate virus.

COM Surrogate – How Did I Get It and What Does It Do?

COM Surrogate can be easily recognised in Windows task manager:

One way to check if COM Surrogate is not a virus is to see it’s properties by right-clicking on the process:

Then, you should see a tab, called Details. In this tab, you can check if the file is digitally signed by Microsoft. Below, you can see how a legitimate COM Surrogate file should look like:

But be aware, because this check is not 100% guarantee that your computer is safe from COM Surrogate. Some viruses, like Trojans, Spyware, Infostealers, RATs and other malware could inject malicious code into COM Surrogate and make it seem like a completely legitimate file. If you notice unusual behaviour on your computer, heightened network activity and tens of COM Surrogate processes running, you should check your computer for malware.

If malware, COM Surrogate – related viruses may have infected your computer as a result of the following methods:

  • Via a malicious link opened on your browser.
  • Via a file, downloaded and ran on your computer.

Once infected your PC, depending on the virus type it is, a virus using COM Surrogate to hide can perform a range of activities in it, like:

  • Logging your keystrokes.
  • Display ads.
  • Collect passwords you have saved.
  • Log the keystrokes you type.
  • Obtain data from your network activity.
  • Take screenshots.
  • Tap into your camera or microphone.

Either way, if you notice any unusual activity, we do recommend that you check your computer for malware by using the instructions below.

Removal Instructions for COM Surrogate Viruses

To remove a virus using COM Surrogate by yourself, you can try steps 1 and 2 from the instructions below. Be advised however, that the most effective way to know if your computer has been compromised by COM Surrogate is to run a scan of It, by using a professional anti-malware software. Such program will scan your computer for all forms of Spyware and other malware and remove them effectively without damaging Windows.


Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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