How to remove Adrozek browser-modifying adware
Written by Tomas Meskauskas on (updated)
What is Adrozek?
Adrozek is a malicious browser modifier, classified as adware. It operates by infiltrating browsers and injecting untrusted and malicious ads into them, however, it can do more damage than just running intrusive advertisement campaigns.
This software collects information extracted from browsers and attempts to gain a better foothold on the device through manipulation of browser settings and extensions (and installation of additional extensions).
During research, Adrozek did not successfully carry out its intended purposes, yet it nonetheless poses a significant threat to device/user safety. Due to the dubious methods used to proliferate adware, these apps are also classified as Potentially Unwanted Applications (PUAs).
Adrozek targets Google Chrome, Mozilla Firefox, Microsoft Edge and Yandex browsers. How it affects the browsers differs: in general terms, it modifies browser settings and delivers deceptive, potentially dangerous ads.
The modifications can include circumventing or disabling security defenses, disguising rogue software as legitimate extensions, invisibility on the task bar, running in incognito/private mode, disabling updates, executing scripts on visited websites without users' permission, disabling safe mode, etc.
The primary purpose of Adrozek is to run advertisement campaigns. It does this by injecting the ads into search results and, in some cases, it might even overlay genuine advertisements on visited sites with its own ads. Once the injected false search results and/or delivered ads are clicked, they can redirect to dubious and possibly malicious websites.
Furthermore, the advertisements and promoted web pages could infiltrate unwanted or even malicious software into browsers/systems. While Adrozek has been observed promoting relatively innocuous sites, it has likewise been noted to download/install additional content.
Furthermore, Adrozek attempts to extract and exfiltrate data from compromised browsers. Typically, software of this type targets the following information: browsing and search engine histories, IP (Internet Protocol) addresses, geolocations, personally identifiable details, credit card numbers, account log-in credentials (i.e. IDs, usernames, passwords), and so on.
To summarize, the presence of Adrozek on devices can result in browser/system infections, serious privacy issues, financial loss and even identity theft. Therefore, you are strongly advised to remove all suspicious applications and browser extensions/plug-ins immediately upon detection.
|Name||Ads by Adrozek|
|Threat Type||Adware, Unwanted ads, Pop-up Virus.|
|Detection Names||Avast (Win32:AdwareX-gen [Adw]), BitDefender (Trojan.GenericKDZ.70552), ESET-NOD32 (A Variant Of Win32/Kryptik.HAYM), DrWeb (Trojan.PWS.Stealer.29366), Microsoft (Trojan:Win32/Adrozek!BV), Full List Of Detections (VirusTotal).|
|Symptoms||Seeing advertisements not originating from the sites you are browsing. Intrusive pop-up ads. Decreased Internet browsing speed.|
|Distribution Methods||Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers.|
|Damage||Decreased computer performance, browser tracking - privacy issues, possible additional malware infections.|
|Malware Removal (Windows)||
To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
AdBlock Stream, Movie Finder, Media Convert Pro Promos and OneUpdater are some examples of other adware-type applications. They may seem legitimate and harmless, and users are often enticed into download/installation with offers of various "useful" features. In fact, the promised functionality is rarely operational. This applies to most PUAs.
The sole purpose of these unwanted apps is to generate profit for the developers. Regular users receive no real value and can experience serious problems.
PUAs are designed to run intrusive ad campaigns, force-open untrustworthy and dangerous web pages, hijack browsers, and collect sensitive/private data.
How did Adrozek install on my computer?
PUAs are often downloaded/installed together with other products. This deceptive marketing technique of pre-packing regular software with unwanted or malicious additions is called "bundling".
By rushing through download/installation of software (e.g. ignoring terms, skipping steps and sections, using "Quick/Express" settings, etc.) many users risk unintentionally allowing bundled content into their devices. Intrusive advertisements proliferate PUAs as well. When clicked, the ads can execute scripts to download/install these applications without users' permission.
Some PUAs have "official" download web pages from which they can be downloaded.
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.
Installed programs must be activated and updated with tools or implemented functions that are provided by the official developers. No other third party, unofficial tools should be used.
Note that it is illegal to activate licensed software with ‘cracking’ tools. Files and programs should be downloaded from official websites and via direct download links. Avoid third party installers and the tools/sources mentioned above.
Do not open website links or files in irrelevant emails that are received from unknown, suspicious addresses. These bogus emails are often disguised as official and important. Regularly, scan your computer with reputable, up-to-date antivirus or anti-spyware software
If your computer is already infected with Adrozek, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate this adware.
Example of Adrozek malware process in Windows Task Manager (the process name might vary):
Instant automatic 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 malware. Download it by clicking the button below:
- What is Adrozek?
- STEP 1. Uninstall Adrozek application using Control Panel.
- STEP 2. Remove Adrozek ads from Google Chrome.
- STEP 3. Remove 'Ads by Adrozek' from Mozilla Firefox.
- STEP 4. Remove Adrozek extension from Safari.
- STEP 5. Remove rogue plug-ins from Microsoft Edge.
- STEP 6. Remove Adrozek adware from Internet Explorer.
Adrozek adware 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 "Main service" (Adrozek disguised under a different name), select this entry and click "Uninstall" or "Remove".
After uninstalling the potentially unwanted application (which causes Adrozek ads), scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.
Remove Adrozek adware from Internet browsers:
Adrozek may install browser plug-ins on Internet Explorer, Google Chrome, or Mozilla Firefox. Therefore, you are advised to remove all potentially unwanted browser add-ons from your Internet browsers.
Video showing how to remove potentially unwanted browser add-ons:
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 all recently-installed suspicious browser add-ons and remove them.
If you continue to have problems with removal of the ads by adrozek, 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", in the opened window remove all recently-installed suspicious browser plug-ins.
Computer users who have problems with ads by adrozek 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, click Safari menu, and select Preferences....
In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.
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 upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.
If you continue to have problems with removal of the ads by adrozek, 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.
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 browser extensions, select these entries and click "Remove".
If you continue to have problems with removal of the ads by adrozek, 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.
Commonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.
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