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Dllhost.exe malware (Virus removal guide)

Myantispyware team May 17, 2022    

What is Dllhost.exe malware

Dllhost.exe malware is a malicious program that masquerades as a legitimate system process – “dllhost.exe (COM Surrogate)”, so as not to attract attention in the Task Manager. Typically, malicious files such as Dllhost.exe can infect a personal computer when a user runs and installs the infected program as well as cracked games, freeware, key generators and other similar software.

 

Dllhost.exe malware

Dllhost.exe malware – 48 security vendors and 2 sandboxes flagged this file as malicious

QUICK LINKS

  • What is Dllhost.exe malware?
  • Threat Summary
  • Removal

Dllhost.exe malware can display unwanted advertisements on your computer screen so that your cannot stop them, redirect your web browser to unsafe web-pages, download and install other malicious software such as spyware, trojans and coin miners. Spyware is a malicious program designed to gather and transmit sensitive information without your permission. It can track information about webpages visited, browser and system information, and your computer IP address. Coin miner is a malicious program that uses your computer’s resources to generate digital currency.

 

unwanted ads

Unwanted ads


 

To summarize, Dllhost.exe malware can lead to malware infection and financial losses. It can seriously affect your privacy, your computer’s performance and security.

How does Dllhost.exe get on your computer

Most often, malware such as Dllhost.exe gets installed when users visit a scam site and click an Install button, or when users download and run a suspicious program, or when users install freeware that includes a bundled program.

Sometimes it is possible to avoid the setup of any malware: run only reputable software which download from reputable sources, never install any unknown and suspicious apps, keep internet browser updated (turn on automatic updates), use good antivirus software, double check freeware before install it (do a google search, scan a downloaded file with VirusTotal), avoid malicious and unknown web pages.

Threat Summary

Name Dllhost.exe, “Dllhost.exe malware”, “Dllhost.exe virus”, “Dllhost.exe COM Surrogate”
Type malware
Related software PC_En-1652259918_setup.exe (TrojanDownloader:MSIL/Stealer, Trojan.Win32.Agent)
Detection names Trojan/Win.Generic, Trojan.GenericKD, Win32:Trojan-gen, W32.AIDetect.malware1, PossibleThreat.PALLAS.H, Trojan.Win32.Packed.cl, A Variant Of Win32/GenKryptik.FTZS, Trojan.Win32.Generic, Trojan.MalPack, TrojanSpy.Stealer, Win32.Trojan-spy.Stealer.Gbq
Symptoms
  • you experience lots of unwanted pop up ads
  • web links redirect to websites different from what you expected
  • there is an unexpected application in the ‘Uninstall a program’ section of your Control Panel
  • unexpected browser addons or toolbars keep coming back
  • your web-browser homepage or search engine keeps changing or is not set to Google anymor
  • you cannot update your security software
  • speed test good but internet slow
  • CPU usage seems unusually high
Removal Dllhost.exe removal guide

 
On the Internet, users can come across many malicious programs that perform various malicious actions. Among them there are such as AnarchyGrabber Stealer, Numando malware, DPD Delivery Email virus, Bloom exe adware, although, of course, there are many more. Some of them collect user data, others install malware on computers, and still others add infected computers to botnets, and so on. In any case, each malicious program (adware, browser hijacker, trojan, worm, …) is a huge threat to both user privacy and computer security. Therefore, malicious programs must be removed immediately after detection; using an infected computer is very dangerous.

How to remove Dllhost.exe malware from computer (Virus removal guide)

If you have consistent pop-ups or unwanted ads, slow PC, crashing system issues, you are in need of malware removal assistance. The step-by-step guidance below will guide you forward to get Dllhost.exe malware removed and will help you get your computer operating at peak capacity again.




The below tutorial for devices using MS Windows, for Android phones, use How to remove virus from Android phone, and for Apple computers based on Mac OS use How to delete browser hijacker, pop-ups, advertisements from Mac

To remove Dllhost.exe, use the following steps:

  1. Kill Dllhost.exe malware
  2. Disable Dllhost.exe start-up
  3. Uninstall Dllhost.exe related software
  4. Scan computer for malware
  5. Reset Google Chrome
  6. Reset Internet Explorer
  7. Reset Firefox

Kill Dllhost.exe malware

Press CTRL, ALT, DEL keys together.

remove ransomnote - task manager

Click Task Manager. Select the “Processes” tab, look for “Dllhost.exe malware” then right-click it and select “End Task” or “End Process” option. If your Task Manager does not open or the Windows reports “Task manager has been disabled by your administrator”, then follow the guide: How to Fix Task manager has been disabled by your administrator.

kill virus

This malware masks itself to avoid detection by imitating legitimate Microsoft Windows processes. A process is particularly suspicious: it’s taking up a lot of memory (despite the fact that you closed all of your applications), its name is not familiar to you (if you’re in doubt, you can always check the program by doing a search for its name in Google, Yahoo or Bing).

Disable Dllhost.exe start-up

Select the “Start-Up” tab, look for something suspicious that is the Dllhost.exe malware, right click to it and select Disable.

disable startup

Close Task Manager.

Uninstall Dllhost.exe related software

Check the list of installed apps on your computer and remove all unknown and recently installed apps. If you see an unknown program with incorrect spelling or varying capital letters, it have most likely been installed by malware and you should clean it off first with a malware removal utility such as MalwareBytes Anti-Malware.

 Windows 7  Windows 8
  • Click ‘Start’.
  • In the Start menu select ‘Control Panel’.
  • Find and select ‘Programs and Features’ or ‘Uninstall a program’.
  • Select the program.
  • Click ‘Uninstall’.
  • Press and hold Windows key and hit X key.
  • Select ‘Programs and Features’ from the menu.
  • Select the program.
  • Click ‘Uninstall’.
 Windows 10  Mac OS
  • Press and hold Windows key and hit X key.
  • Select ‘Programs and Features’ from the menu.
  • Select the program.
  • Click ‘Uninstall’.
  • On the top menu select ‘Go’, then ‘Applications’.
  • Drag an unwanted application to the Trash bin.
  • Right-click on the ‘Trash’ and select ‘Empty Trash’.

Scan computer for malware

Antimalware tools differ from each other in many features, such as performance, scheduled scans, automatic updates, virus signature database, technical support, compatibility with other antivirus programs, and so on.

We recommend you use the following free malware removal tools: Zemana Anti-Malware, MalwareBytes Anti-Malware and Hitman Pro. Each of these programs has all of needed features, but most importantly, they can be used to identify the Dllhost.exe malware and remove it from the computer.




You can remove Dllhost.exe virus automatically with the help of MalwareBytes AntiMalware. We recommend this malware removal utility because it can easily remove spyware, trojans, browser hijackers, adware, PUPs and toolbars with all their components such as files, folders and registry entries for free.
 
MalwareBytes for Windows, scan for adware is complete
 
First, visit the page linked below, then click the ‘Download’ button in order to download the latest version of MalwareBytes.

Malwarebytes Anti-malware
Malwarebytes Anti-malware
327131 downloads
Author: Malwarebytes
Category: Security tools
Update: April 15, 2020

Once the downloading process is complete, run it and follow the prompts. Once installed, MalwareBytes will try to update itself and when this procedure is done, click the “Scan” button to perform a system scan with this utility for the Dllhost.exe malware. A scan can take anywhere from 10 to 30 minutes, depending on the count of files on your computer and the speed of your personal computer. During the scan MalwareBytes will locate threats exist on your computer. Make sure all threats have ‘checkmark’ and click “Quarantine” button.

The MalwareBytes AntiMalware is a free malware removal tool that you can use to remove all detected folders, files, services, registry entries and so on. To learn more about this software, we advise you to read and follow the steps or the video guide below.

There is another antimalware tool that can remove malicious software for free – this is Kaspersky virus removal tool (KVRT). It can remove crypto malware, adware, spyware, trojans, worms, potentially unwanted programs, malicious software and other security threats from your computer. You can use this tool to search for threats even if you have an antivirus or any other security program.

Download Kaspersky virus removal tool by clicking on the following link. Save it directly to your Windows Desktop.

Kaspersky virus removal tool
Kaspersky virus removal tool
129253 downloads
Author: Kaspersky® lab
Category: Security tools
Update: March 5, 2018

After the downloading process is complete, double-click on the KVRT icon. Once initialization procedure is complete, you’ll see the KVRT screen as displayed below.

KVRT main window

Click “Change Parameters” and set a check near all your drives. Click OK to close the Parameters window. Next click “Start scan” button to scan your computer for the Dllhost.exe malware and other known infections. This task can take quite a while, so please be patient. While the tool is scanning, you can see how many objects and files has already scanned.

Kaspersky virus removal tool scanning

As the scanning ends, Kaspersky virus removal tool will create a list of malware found, as displayed in the figure below.

Kaspersky virus removal tool scan report

All detected threats will be marked. You can delete them all by simply clicking Continue.

Reset Google Chrome

In this step we are going to show you how to reset Google Chrome settings. Malware such as Dllhost.exe can make changes to your web-browser settings, add toolbars and unwanted extensions. By resetting Chrome settings you will reset unwanted changes caused by malicious software. However, your saved passwords and bookmarks will not be changed, deleted or cleared.

First launch the Chrome. Next, click the button in the form of three horizontal dots (Google Chrome menu button).

It will open the Google Chrome menu. Select More Tools, then press Extensions. Carefully browse through the list of installed addons. If the list has the extension signed with “Installed by enterprise policy” or “Installed by your administrator”, then complete the following steps: Remove Google Chrome extensions installed by enterprise policy.

Open the Chrome menu once again. Further, press the option named “Settings”.

open Google Chrome settings

The web browser will display the settings screen. Another method to display the Chrome’s settings – type chrome://settings in the internet browser adress bar and press Enter

Scroll down to the bottom of the page and click the “Advanced” link. Now scroll down until the “Reset” section is visible, as shown in the following example and click the “Reset settings to their original defaults” button.

Chrome settings reset link

The Google Chrome will display the confirmation dialog box as displayed on the image below.

Chrome settings reset dialog

You need to confirm your action, click the “Reset” button. The web browser will run the process of cleaning. Once it is finished, the internet browser’s settings including search provider by default, home page and newtab back to the values which have been when Google Chrome was first installed on your personal computer.

Reset Firefox

If your Firefox web browser is hijacked by Dllhost.exe, then it may be time to perform the browser reset. Keep in mind that resetting your web-browser will not remove your history, bookmarks, passwords, and other saved data.

Start the Firefox and click the menu button (it looks like three stacked lines) at the top right of the internet browser screen. Next, click the question-mark icon at the bottom of the drop-down menu. It will open the slide-out menu.

Mozilla Firefox help menu

Select the “Troubleshooting information”. If you are unable to access the Help menu, then type “about:support” in your address bar and press Enter. It bring up the “Troubleshooting Information” page as displayed in the following example.

Mozilla Firefox troubleshooting info

Click the “Refresh Firefox” button at the top right of the Troubleshooting Information page. Select “Refresh Firefox” in the confirmation prompt. The Firefox will start a process to fix your problems that caused by the Dllhost.exe malware. Once, it is finished, click the “Finish” button.

How to stay safe online

If you browse the Internet, you can’t avoid malicious ads and scam sites. But you can protect your internet browser against it. Download and use an ad blocking program. AdGuard is an ad-blocker which can filter out a huge number of of the malicious advertising, blocking dynamic scripts from loading harmful content.

  1. First, visit the following page, then click the ‘Download’ button in order to download the latest version of AdGuard.
    Adguard
    Adguard download
    26858 downloads
    Version: 6.4
    Author: © Adguard
    Category: Security tools
    Update: November 15, 2018
  2. When the downloading process is complete, start the downloaded file. You will see the “Setup Wizard” window. Follow the prompts.
  3. After the installation is complete, press “Skip” to close the installation program and use the default settings, or press “Get Started” to see an quick tutorial which will help you get to know AdGuard better.
  4. In most cases, the default settings are enough and you don’t need to change anything. Each time, when you run your computer, AdGuard will launch automatically and stop unwanted advertisements, block harmful and misleading webpages. For an overview of all the features of the program, or to change its settings you can simply double-click on the icon called AdGuard, which can be found on your desktop.

Finish words

We suggest that you keep Zemana Anti-Malware (to periodically scan your device for new adware and other malware) and AdGuard (to help you stop malicious pop-ups and scam sites). Moreover, to prevent any malware, please stay clear of unknown and third party programs, make sure that your antivirus software, turn on the option to search for potentially unwanted programs.

If you need more help with Dllhost.exe virus related issues, go to here.

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Author: Myantispyware team

Myantispyware is an information security website created in 2004. Our content is written in collaboration with Cyber Security specialists, IT experts, under the direction of Patrik Holder and Valeri Tchmych, founders of Myantispyware.com.

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