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How to remove apps that promote biosc.xyz

Also Known As: biosc.xyz browser hijacker
Damage level: Medium

What is biosc.xyz?

biosc.xyz is the address of a fake search engine, which is promoted through at least two browser hijackers called DISI APP and SApp+, Vitos APP. Generally, browser hijackers promote fake search engines by modifying browser settings. Additionally, apps of this type can often record data.

Few users download or install browser hijackers intentionally - this is caused inadvertently through rogue apps. Therefore, browser hijackers are categorized as potentially unwanted applications (PUAs).

biosc.xyz browser hijacker

Most browser hijackers promote fake search engines by changing browser settings such as the address of the default search engine, new tab and homepage. DISI APP and SApp+ assign them to biosc.xyz. Therefore, users who have these apps installed on browsers visit biosc.xyz when they open a browser, enter search queries into the URL bar or open new tabs.

Note that, on Chrome, biosc.xyz is opened via bytsm.xyz and, on Firefox, it is opened via searchmes.xyz, or a number of other dubious addresses. Commonly, fake search engines generate misleading results and this is likely to be the case with biosc.xyz as well.

Typically, the addresses assigned by browser hijackers cannot be removed from the settings as long as the rogue apps are installed on browsers and/or operating systems. In this case, biosc.xyz can be avoided by uninstalling the DISI APP and SApp+ applications.

This is not the only reason to uninstall browser hijackers. These apps can gather data such as addresses of visited pages, IP addresses, geolocations, entered search queries, and other browsing data. In some cases, they might also record sensitive, personal information.

The data is sold to third parties (potentially, cyber criminals) who misuse it to generate revenue in other ways. In summary, installed browser hijackers can cause problems relating to online privacy, web browsing safety, identity theft and other issues. Therefore, remove DISI APP, SApp+ and other installed browser hijacker from the browser and operating system immediately.

Threat Summary:
Name biosc.xyz browser hijacker
Threat Type Browser Hijacker, Redirect, Search Hijacker, Toolbar, Unwanted New Tab.
Browser Extension(s) DISI APP, SApp+, Vitos APP
Supposed Functionality These apps supposedly improve the browsing experience.
Affected Browser Settings Homepage, new tab URL, default search engine.
Detection Names (biosc.xyz) Forcepoint ThreatSeeker (Suspicious), Full List Of Detections (VirusTotal).
Symptoms Manipulated internet browser settings (homepage, default internet search engine, new tab settings). Users are forced to visit the hijacker's website and search the internet using their search engines.
Distribution methods Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers.
Damage Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
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There are many other apps similar to DISI APP and SApp+ including, for example, Protect My Search App, Unit Conversion Tab and Tab Recovery. They might be advertised as useful and legitimate, and supposedly improve the browsing experience, have various features, etc.

In fact, most deliver no real value and simply cause problems. Therefore, never trust or use browser hijackers or other PUAs.

How did biosc.xyz install on my computer?

Most PUAs are installed through clicked deceptive advertisements or the set-ups of other programs (when software developers distribute them using the "bundling" method). Commonly, developers attempt to trick users into downloading and installing unwanted apps together with their required programs.

They do this by including PUAs into the download/installation set-ups of other programs as 'additional offers' and hope that people will not decline them. In most cases, these offers can be found in "Custom", "Advanced" and other similar settings of the set-ups.

Users who download and install programs without checking and changing these settings often allow included PUAs to infiltrate.

How to avoid installation of potentially unwanted applications

Channels and tools such as third party downloaders, installers, Peer-to-Peer networks (e.g, torrent clients, eMule), unofficial websites are often used to distribute PUAs or malware. Therefore, software and files should be downloaded only from official pages and through direct links.

Downloads and installations should not be finished without checking "Advanced", "Custom" and other settings. Decline any offers to download or install additional, unwanted applications. Do not click advertisements that are displayed on dubious websites, since they can open untrusted websites or cause unwanted downloads and installations.

Remove any unwanted, suspicious extensions, add-ons, and plug-ins already installed on the browser immediately. Also remove software of this kind that is installed on the operating system. If your computer is already infected with browser hijackers, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate it.

biosc.xyz is opened via bytsm.xyz on Google Chrome (GIF):

biosc.xyz gets opened via bytsm.xyz 

biosc.xyz is opened via searchmes.xyz on Mozilla Firefox (GIF):

biosc.xyz gets opened via searchmes.xyz 

Website promoting DISI APP:

biosc.xyz redirect promoter chrome 

Website promoting SApp+:

biosc.xyz redirect promoter firefox 

Notification stating that DISI APP can read and change various data:

DISI APP asks for a permission to be installed on chrome 

Notification stating that SApp+ can access browser taps and store client-side data:

SApp+ asks for a permission to be installed on firefox

Screenshot of another Google Chrome extension (Viros APP) promoting biosc.xyz:

Vitos APP Chrome extension promoting biosc.xyz

Vitos APP redirecting users to biosc.xyz via qssc.xyz and searchmes.xyz (GIF):

Vitos APP redirecting users to biosc.xyz

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:

biosc.xyz redirect removal:

Windows 11 users:

Accessing Apps and Features in Windows 11

Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.

Windows 10 users:

Accessing Programs and Features (uninstall) in Windows 8

Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.

Windows 7 users:

Accessing Programs and Features (uninstall) in Windows 7

Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.

macOS (OSX) users:

Uninstall app in OSX (Mac)

Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.

biosc.xyz browser hijacker uninstall via Control Panel

In the uninstall programs window: look for any recently installed suspicious applications (like "DISI APP", "SApp+"), select these entries and click "Uninstall" or "Remove".

After uninstalling the potentially unwanted applications that cause browser redirects to the biosc.xyz website, scan your computer for any remaining unwanted components. To scan your computer, use recommended malware removal software.

biosc.xyz redirect removal from Internet browsers:

Video showing how to remove browser redirects:

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing biosc.xyz related Internet Explorer extensions

Click the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer), select "Manage Add-ons". Look for any recently installed suspicious extensions, select these entries and click "Remove".

Change your homepage:

Removing biosc.xyz from Internet Explorer homepage

Click the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer), select "Internet Options", in the opened window remove hxxp://biosc.xyz and enter your preferred domain, which will open each time you launch Internet Explorer. You can also enter about: blank to open a blank page when you start Internet Explorer.

Change your default search engine:

Removing biosc.xyz from Internet Explorer default search engine

Click the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer), select "Manage Add-ons". In the opened window, select "Search Providers", set "Google", "Bing", or any other preferred search engine as your default and then remove "DISI APP" or "SApp+".

Optional method:

If you continue to have problems with removal of the biosc.xyz browser hijacker, reset your Internet Explorer settings to default.

Windows XP users: Click Start, click Run, in the opened window type inetcpl.cpl In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows XP

Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type inetcpl.cpl and click enter. In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows 7

Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.

Reseting Internet Explorer settings to default in Windows 8 - accessing

In the opened window, select the Advanced tab.

Resetting Internet Explorer settings to default on Windows 8 - Internet options advanced tab

Click the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - click the Reset button in the Internet options advanced tab

Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - confirm settings reset to default by clicking the reset button

Google Chrome logoRemove malicious extensions from Google Chrome:

Removing biosc.xyz related Google Chrome extensions

Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate "DISI APP" and/or all recently-installed suspicious browser add-ons and remove them.

Change your homepage:

Removing biosc.xyz from Google Chrome homepage

Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome), select "Settings". In the "On startup" section, disable "DISI APP", look for a browser hijacker URL (hxxp://www.biosc.xyz) below the “Open a specific or set of pages” option. If present, click on the three vertical dots icon and select “Remove”.

Change your default search engine:

Removing biosc.xyz from Google Chrome default search engine

To change your default search engine in Google Chrome: Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome), select "Settings", in the "Search engine" section, click "Manage search engines...", in the opened list, look for "biosc.xyz", and when located click the three vertical dots near this URL and select "Remove from list".

Optional method:

If you continue to have problems with removal of the biosc.xyz browser hijacker, reset your Google Chrome browser settings. Click the Chrome menu icon Google Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.

Google Chrome settings reset step 1

After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.

Google Chrome settings reset step 2

In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.

Google Chrome settings reset step 3

Mozilla Firefox logoRemove malicious plug-ins from Mozilla Firefox:

Removing biosc.xyz related Mozilla Firefox extensions

Click the Firefox menu firefox menu icon (at the top right corner of the main window), select "Add-ons". Click on "Extensions" and remove "SApp+".

Change your homepage:

Removing biosc.xyz from Mozilla Firefox homepage

To reset your homepage, click the Firefox menu firefox menu icon (at the top right corner of the main window), then select "Options", in the opened window, disable "SApp+", remove hxxp://biosc.xyz and enter your preferred domain, which will open each time you start Mozilla Firefox.

Change your default search engine:

Removing biosc.xyz from Mozilla Firefox default search engine

In the URL address bar, type about:config and press Enter.
Click "I'll be careful, I promise!".
In the search filter at the top, type: "extensionControlled"
Set both results to "false" by either double-clicking each entry or clicking the Mozilla Firefox switch about:config entry button button.

Optional method:

Computer users who have problems with biosc.xyz browser hijacker removal can reset their Mozilla Firefox settings.

Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, firefox menu icon in the opened menu, click Help.

Accessing settings (Reset Firefox to default settings step 1)

Select Troubleshooting Information.

Accessing Troubleshooting Information (Reset Firefox to default settings step 2)

In the opened window, click the Refresh Firefox button.

Clicking on Refresh Firefox button (Reset Firefox to default settings step 3)

In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.

Confirm your want to reset Firefox settings to default (Reset Firefox to default settings step 4)

safari browser logoRemove malicious extensions from Safari:

Removing browser hijackers from safari step 1 - accessing preferences

Make sure your Safari browser is active and click Safari menu, then select Preferences...

removing browser hijacker from safari step 2 - removing extensions

In the preferences window select the Extensions tab. Look for any recently installed suspicious extensions and uninstall them.

Removing browser hijackers from safari step 3 - changing homepage

In the preferences window select General tab and make sure that your homepage is set to a preferred URL, if its altered by a browser hijacker - change it.

removing browser hijackers from safari step 4 - changing the default Internet search engine

In the preferences window select Search tab and make sure that your preferred Internet search engine is selected.

Optional method:

Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...

resetting safari step 1

In the opened window select all history and click the Clear History button.

resetting safari step 2

Microsoft Edge (Chromium) logoRemove malicious extensions from Microsoft Edge:

Removing browser hijackers from Microsoft Edge step 1

Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge), select "Extensions". Locate any recently-installed suspicious browser add-ons, and remove them.

Change your homepage and new tab settings:

Removing browser hijackers from Microsoft Edge step 2

Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge), select "Settings". In the "On startup" section look for the name of the browser hijacker and click "Disable".

Change your default Internet search engine:

Removing browser hijackers from Microsoft Edge step 3

To change your default search engine in Microsoft Edge: Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge), select "Privacy and services", scroll to bottom of the page and select "Address bar". In the "Search engines used in address bar" section look for the name of the unwanted Internet search engine, when located click the "Disable" button near it. Alternatively you can click on "Manage search engines", in the opened menu look for unwanted Internet search engine. Click on the puzzle icon Microsoft Edge (Chromium) puzzle icon near it and select "Disable".

Optional method:

If you continue to have problems with removal of the biosc.xyz browser hijacker, reset your Microsoft Edge browser settings. Click the Edge menu icon Microsoft Edge (chromium) menu icon (at the top right corner of Microsoft Edge) and select Settings.

Microsoft Edge (Chromium) reset step 1

In the opened settings menu select Reset settings.

Microsoft Edge (Chromium) reset step 2

Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.

Microsoft Edge (Chromium) reset step 3

  • If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.

Summary:

declining installation of browser hijackers while downloading free software sampleA browser hijacker is a type of adware infection that modifies Internet browser settings by assigning the homepage and default Internet search engine settings to some other (unwanted) website URL. Commonly, this type of adware infiltrates operating systems through free software downloads. If your download is managed by a download client, ensure that you decline offers to install advertised toolbars or applications that seek to change your homepage and default Internet search engine settings.

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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
Software uninstall instructions
Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
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