How to remove the Sirris App browser hijacker

What is Sirris App?

Sirris App is a browser hijacker. Software within this category typically operates by making modifications to browser settings to promote fake search engines. Sirris App promotes keysearchs.com, however, it does not always modify browser settings (see below).

Additionally, this browser has data tracking capabilities, which are used to monitor users' browsing habits. Due to the dubious methods used to proliferate Sirris App, it is also classified as a Potentially Unwanted Application (PUA).

Popular browsers such as Google Chrome, Mozilla Firefox and Internet Explorer are typical targets of browser hijackers. They reassign the homepage, default search engine and new tab/window URLs to the addresses of bogus search engines. Therefore, each new browser tab/window opened and search made through the URL bar redirect to the promoted address.

Note that, in some cases, Sirris App makes the aforementioned modifications to promote keysearchs.com, and in others, it does not.

Fake search engines are usually unable to provide unique results, and so they redirect to (or cause redirection chains ending with) Google, Yahoo, Bing and other legitimate sites - keysearchs.com is no exception to this and, at the time of research, redirected to Google (google.com).

It might also redirect to other genuine search engines. Browser hijackers can undo any changes users attempt to make to their browsers and/or deny access to the settings outright. Therefore, recovering a hijacked browser is impossible without removing the software affecting it.

As mentioned, Sirris App can track data. It can record browsing activity (URLs visited, pages viewed, search queries typed, etc.) and collect personal information extracted from it (IP addresses, geolocations and other details). The gathered data is then shared with and/or sold to third parties (potentially, cyber criminals).

To summarize, the presence of data-tracking software on devices can lead to financial loss, serious privacy issues and even identity theft. To protect browser/system integrity and user safety, you are strongly advised to eliminate all suspect applications and browser extensions/plug-ins immediately upon detection.

Threat Summary:

Name	Sirris App
Threat Type	Browser Hijacker, Redirect, Search Hijacker, Toolbar, Unwanted New Tab.
Browser Extension(s)	Sirris App
Promoted URL	keysearchs.com
Serving IP Address (keysearchs.com)	104.18.36.162
Affected Browser Settings	Homepage, new tab URL, default search engine.
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. ▼ Download Combo Cleaner To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

BipApp, Puppyness Search and Auratab are some examples of other browser hijackers. They may seem legitimate and harmless, and users are often enticed into download/installation with offers of various "useful" features, however, the functions promised are seldom operational.

This applies to most PUAs. The sole purpose of these unwanted apps is to generate revenue for the developers. Rather than delivering any real value, PUAs can hijack browsers, force-open untrusted or malicious web pages, run intrusive advertisement campaigns and collect private information.

How did Sirris App install on my computer?

PUAs are distributed via the download/installation set-ups of other software. "Bundling" is the term used to describe this deceptive marketing technique of pre-packing normal programs with unwanted or malicious additions.

By rushing through download/installation processes (e.g. ignoring terms, skipping steps, using "Quick/Express" settings, etc.), many users risk unintentionally allowing bundled content into their systems. Intrusive advertisements proliferate PUAs as well.

Once clicked, the ads can execute scripts to stealthily download/install rogue applications. Some PUAs also have "official" promotional sites from which they can be downloaded.

How to avoid installation of potentially unwanted applications

You are advised to research all software prior to download/installation and/or purchase. All downloads must be done from official and verified sources, since untrusted download channels, including unofficial and free file-hosting websites, Peer-to-Peer sharing networks and other third party downloaders, can offer bundled content.

When downloading/installing, it is important to read the terms, explore all possible options, use the "Custom/Advanced" settings and opt-out of additional apps, tools, features, etc. Intrusive ads may seem legitimate, however, they can redirect to dubious web pages (e.g. gambling, adult-dating, pornography, and many others).

If you encounter these advertisements or redirects, check all devices and immediately remove all suspicious applications and browser extensions/plug-ins. If your computer is already infected with Sirris App, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate this browser hijacker.

Sirris App browser hijacker asking for permission to monitor/record users' browsing activity:

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:
▼ DOWNLOAD Combo Cleaner 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. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Quick menu:

• What is Sirris App?
• STEP 1. Uninstall Sirris App application using Control Panel.
• STEP 2. Remove keysearchs.com redirect from Internet Explorer.
• STEP 3. Remove Sirris App browser hijacker from Google Chrome.
• STEP 4. Remove keysearchs.com homepage and default search engine from Mozilla Firefox.
• STEP 5. Remove keysearchs.com redirect from Safari.
• STEP 6. Remove rogue plug-ins from Microsoft Edge.

Sirris App browser hijacker removal:

Windows 11 users:

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:

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:

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:

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.

In the uninstall programs window: look for any recently installed suspicious applications (for example, "Sirris App"), select these entries and click "Uninstall" or "Remove".

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

Sirris App browser hijacker removal from Internet browsers:

Video showing how to remove browser redirects:

Remove malicious add-ons from Internet Explorer:

Click the "gear" 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:

Click the "gear" icon (at the top right corner of Internet Explorer), select "Internet Options", in the opened window remove hxxp://keysearchs.com 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:

Click the "gear" 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 "Sirris App".

Optional method:

If you continue to have problems with removal of the keysearchs.com redirect, 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.

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.

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

In the opened window, select the Advanced tab.

Click the Reset button.

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

Remove malicious extensions from Google Chrome:

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

Change your homepage:

Click the Chrome menu icon  (at the top right corner of Google Chrome), select "Settings". In the "On startup" section, disable "Sirris App", look for a browser hijacker URL (hxxp://www.keysearchs.com) 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:

To change your default search engine in Google Chrome: Click the 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 "keysearchs.com", 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 keysearchs.com redirect, reset your Google Chrome browser settings. Click the 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.

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

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

Remove malicious plug-ins from Mozilla Firefox:

Click the Firefox menu (at the top right corner of the main window), select "Add-ons". Click on "Extensions" and remove "Sirris App", as well as all other recently installed browser plug-ins.

Change your homepage:

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

Change your 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 button.

Optional method:

Computer users who have problems with keysearchs.com redirect removal can reset their Mozilla Firefox settings.

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

Select Troubleshooting Information.

In the opened window, click the Refresh Firefox button.

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

Remove malicious extensions from Safari:

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

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

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.

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...

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

Remove malicious extensions from Microsoft Edge:

Click the Edge 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:

Click the Edge 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:

To change your default search engine in Microsoft Edge: Click the Edge 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 near it and select "Disable".

Optional method:

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

In the opened settings menu select Reset settings.

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.

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

Summary:

A 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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