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How to remove apps that change browser settings to d2sri.com

Also Known As: d2sri.com browser hijacker
Type: Mac Virus
Damage level: Medium

What is d2sri.com?

d2sri.com is the address of a fake search engine, which is promoted by various potentially unwanted applications (PUAs) including browser hijackersadware-type apps.

One PUA promoting d2sri.com is called ElementaryUnit. In summary, most users do not use fake search engines intentionally - they are forced to do so by potentially unwanted application installed on browsers and/or computers. Generally, users do not download or install PUAs intentionally.

d2sri.com redirects to search.yahoo.com via chunckapp.com

Search engines like d2sri.com are classified as fake because they do not generate unique results, or they generate those that might include links to other untrusted pages. Fake search engines can also display results generated by legitimate search engines.

When used, d2sri.com provides results generated by Yahoo (it simply redirects users to search.yahoo.com). Note that 2sri.com redirects users to search.yahoo.com via chunckapp.com, another untrusted address.

In most cases, apps that promote fake search engines change settings such as the address of the default search engine, homepage, and new tab, and they do not allow users do undo these changes. The only solution is to uninstall the rogue apps.

Therefore, d2sri.com can be removed from browser settings only when the PUA (in this case, ElementaryUnit) is no longer installed. PUAs can also collect browsing-related, and other, details. For example, IP addresses, URLs of visited pages, entered search queries, geolocations and other browsing data, or even sensitive information.

The data is sold to third parties (potentially, cyber criminals) or misused to generate revenue in other ways. Sites such as d2sri.com are also promoted by apps that serve ads (e.g., coupons, banners, surveys, pop-ups). If clicked, these ads can open untrusted sites or even execute scripts that download and install unwanted software.

Threat Summary:
Name d2sri.com browser hijacker
Threat Type Browser hijacker, Mac malware, Mac virus.
Symptoms Your Mac becomes slower than normal, you see unwanted pop-up ads, you are redirected to dubious websites.
Distribution methods Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers, torrent file downloads.
Damage Internet browsing tracking (potential privacy issues), displaying of unwanted ads, redirects to shady websites, loss of private information.
Malware Removal (Mac)

To eliminate possible malware infections, scan your Mac with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
▼ Download Combo Cleaner for Mac
To use full-featured product, you have to purchase a license for Combo Cleaner. Limited seven days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

There are many fake search engines online. Some more examples are 6v5f3l.com, search.locatorunit.com and search.productivebrowser.com. Generally, they appear in browser settings after installation of adware, browser hijackers or other types of PUAs.

In any case, do not use fake search engines or apps that promote them. As mentioned, users mostly download and install PUAs inadvertently.

How did d2sri.com install on my computer?

Research shows that some of the apps designed to promote d2sri.com are distributed via fake Adobe Flash Player installers. These installers are often used to distribute malware including ransomware and Trojans, as well as PUAs.

Browser hijackers, adware-type apps, and other types of PUAs are commonly distributed by integrating them into the download and/or installation set-ups of other programs, so that a proportion of users inadvertently download and install them together with their chosen software. This distribution method is known as "bundling".

Offers to download and install additionally-included apps usually appear in "Advanced", "Custom" and other settings of the set-ups (where they can usually be declined). Many users fail to check and change these settings, thereby granting permission for PUAs to be downloaded and installed by default.

In addition, unwanted downloads and installations are sometimes caused by clicking deceptive advertisements capable of executing certain scripts.

How to avoid installation of potentially unwanted applications

You are advised to research all software before download/installation. Use only official and verified download channels. Unofficial and free file-hosting websites, Peer-to-Peer sharing networks (BitTorrent, Gnutella, eMule), and other third party downloaders commonly offer harmful and bundled content, and are therefore untrusted and should be avoided.

When downloading/installing, read the terms, study all possible options, use the "Custom/Advanced" settings and opt-out of additional apps, tools, features, and so on. Intrusive advertisements typically seem legitimate, however, they can redirect to dubious and malicious sites (e.g. gambling, pornography, adult-dating, and many others).

If you encounter ads or redirects of this kind, inspect the system and remove all dubious applications and browser extensions/plug-ins immediately. If your computer is already infected with browser hijackers, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate them.

One of the applications (ElementaryUnit) used to distribute d2sri.com installed on Safari:

elementary unit installed on safari

Fake Adobe Flash Player installer used to distribute ElementaryUnit:

fake installer used to promote elementaryunit

Instant automatic Mac malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of Mac malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner for Mac By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. Limited seven days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Quick menu:

Video showing how to remove adware and browser hijackers from a Mac computer:

d2sri.com redirect removal:

Remove d2sri.com-related potentially unwanted applications from your "Applications" folder:

mac browser hijacker removal from applications folder

Click the Finder icon. In the Finder window, select "Applications". In the applications folder, look for "MPlayerX", "NicePlayer", or other suspicious applications and drag them to the Trash. After removing the potentially unwanted application(s) that cause online ads, scan your Mac for any remaining unwanted components.

Remove d2sri.com browser hijacker related files and folders:

Finder go to folder command

Click the Finder icon, from the menu bar, choose Go, and click Go to Folder...

step1Check for adware-generated files in the /Library/LaunchAgents folder:

removing adware from launch agents folder step 1

In the Go to Folder... bar, type: /Library/LaunchAgents

removing adware from launch agents folder step 2
In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step2Check for adware-generated files in the /Library/Application Support folder:

removing adware from application support folder step 1

In the Go to Folder... bar, type: /Library/Application Support

removing adware from application support folder step 2
In the “Application Support” folder, look for any recently-added suspicious folders. For example, “MplayerX” or “NicePlayer”, and move these folders to the Trash.

step3Check for adware-generated files in the ~/Library/LaunchAgents folder:

removing adware from ~launch agents folder step 1


In the Go to Folder bar, type: ~/Library/LaunchAgents

removing adware from ~launch agents folder step 2

In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step4Check for adware-generated files in the /Library/LaunchDaemons folder:

removing adware from launch daemons folder step 1
In the Go to Folder... bar, type: /Library/LaunchDaemons

removing adware from launch daemons folder step 2
In the “LaunchDaemons” folder, look for recently-added suspicious files. For example, “com.aoudad.net-preferences.plist”, “com.myppes.net-preferences.plist”, "com.kuklorest.net-preferences.plist”, “com.avickUpd.plist”, etc., and move them to the Trash.

step 5 Scan your Mac with Combo Cleaner:

If you have followed all the steps in the correct order you Mac should be clean of infections. To be sure your system is not infected run a scan with Combo Cleaner Antivirus. Download it HERE. After downloading the file double click combocleaner.dmg installer, in the opened window drag and drop Combo Cleaner icon on top of the Applications icon. Now open your launchpad and click on the Combo Cleaner icon. Wait until Combo Cleaner updates it's virus definition database and click "Start Combo Scan" button.

scan-with-combo-cleaner-1

Combo Cleaner will scan your Mac for malware infections. If the antivirus scan displays "no threats found" - this means that you can continue with the removal guide, otherwise it's recommended to remove any found infections before continuing.

scan-with-combo-cleaner-2

After removing files and folders generated by the adware, continue to remove rogue extensions from your Internet browsers.

d2sri.com browser hijacker homepage and default Internet search engine removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove d2sri.com browser hijacker related Safari extensions:

safari browser preferences

Open Safari browser. From the menu bar, select "Safari" and click "Preferences...".

safari extensions window

In the preferences window, select "Extensions" and look for any recently-installed suspicious extensions. When located, click the "Uninstall" button next to it/them. Note that you can safely uninstall all extensions from your Safari browser - none are crucial for normal browser operation.

Change your homepage:

changing homepage in safari browser

In the "Preferences" window, select the "General" tab. To set your homepage, type the preferred website URL (for example: www.google.com) in the Homepage field. You can also click the “Set to Current Page” button if you wish to set your homepage to the website you are currently visiting.

Change your default search engine:

changing the default Internet search engine in Safari browser

In the "Preferences" window, select the "Search" tab. Here you will find a drop-down menu labelled "Search engine:" Simply select your preferred search engine from the drop-down list.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Safari.

firefox browser iconRemove malicious plug-ins from Mozilla Firefox:

Remove d2sri.com browser hijacker related Mozilla Firefox add-ons:

accessing mozilla firefox add-ons

Open your Mozilla Firefox browser. At the top right corner of the screen, click the "Open Menu" (three horizontal lines) button. From the opened menu, choose "Add-ons".

removing malicious add-ons from mozilla firefox

Choose the "Extensions" tab and look for any recently-installed suspicious add-ons. When located, click the "Remove" button next to it/them. Note that you can safely uninstall all extensions from your Mozilla Firefox browser - none are crucial for normal browser operation.

Change your homepage:

changing mozilla firefox homepage

To change your homepage, click the "Open Menu" (three horizontal lines) button and choose "Preferences" from the drop-down menu. To set your homepage, type the preferred website URL (for example: www.google.com) in the Homepage Page.

Change default search engine:

mozilla firefox about config

In the URL address bar, type "about:config" and click the "I'll be careful, I promise!" button.

changing mozilla firefox default Internet search engine

In the "Search:" field, type the name of the browser hijacker. Right click on each of the found preferences and click "Reset" from the drop-down menu.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Mozilla Firefox.

chrome-browser-iconRemove malicious extensions from Google Chrome:

Remove d2sri.com browser hijacker related Google Chrome add-ons:

removing malicious google chrome extensions step 1

Open Google Chrome and click the "Chrome menu" (three horizontal lines) button located in the top-right corner of the browser window. From the drop-down menu, choose "More Tools" and select "Extensions".

removing malicious Google Chrome extensions step 2

In the "Extensions" window, look for any recently-installed suspicious add-ons. When located, click the "Trash" button next to it/them. Note that you can safely uninstall all extensions from your Google Chrome browser - none are crucial for normal browser operation.

Change your homepage:

changing Google Chrome homepage

Click the "Chrome menu" (three horizontal lines) button and choose "Settings". In the "On Startup" section, click the "Set pages" link near to the "Open a specific page or set of pages" option. Remove the URL of the browser hijacker (for example trovi.com) and enter your preferred URL (for example, google.com).

Change default search engine:

changing the default Internet search engine in Google Chrome

Click the "Chrome menu" (three horizontal lines) button and choose "Settings". In the "Search" section, click the "Manage search engines..." button. In the opened window, remove the unwanted Internet search engine by clicking the "X" button next to it. Select your preferred Internet search engine from the list and click the "Make default" button next to it.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Google Chrome.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

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Removal Instructions in other languages
Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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