How to uninstall DefaultTool adware from your operating system
Written by Tomas Meskauskas on (updated)
What is DefaultTool?
DefaultTool is a piece of dubious software, which operates as adware and a browser hijacker. It delivers intrusive advertisements and promotes fake search engines by making changes to browser settings. Due to the dubious techniques used to proliferate DefaultTool, it is also categorized as a Potentially Unwanted Application (PUA).
Most PUAs collect browsing-related information, and DefaultTool likely has these data tracking capabilities as well. This app has been observed being proliferated via fake Adobe Flash Player updates. Note that bogus software updaters/installers are employed to spread PUAs, trojans, ransomware, and other malware as well.
Adware delivers banners, pop-ups, coupons, surveys, full-page, and other intrusive advertisements. These seriously diminish the browsing experience, as they limit website visibility and reduce browsing speed, however, these ads are more than just a nuisance, they also pose a threat to device/user safety. Once clicked, intrusive ads can redirect to various dubious/malicious websites and some can stealthily download/install software (e.g., PUAs).
Browser hijackers reassign the default search engine, new tab/window, and homepage URLs to fake search engine addresses. Therefore, with this software installed, new browser tabs/windows opened and web searches made via the URL bar redirect to the promoted address. Fake search engines are rarely able to generate unique results and so they tend to redirect to (or cause redirection chains ending with) Google, Bing, Yahoo, and other legitimate search engines.
Browser hackers can restrict/deny access to the browser settings and reset any permitted changes made. Therefore, recovering a hijacked browser is impossible without removing the software affecting it.
Furthermore, most PUAs can track data. Information of interest includes (but is not limited to) URLs visited, pages viewed, search queries typed, IP addresses, geolocations, and even personally identifiable details. PUA developers monetize this sensitive data by sharing it with and/or selling it to third-parties (potentially, cyber criminals).
In summary, unwanted software can lead to system infections, serious privacy issues, financial loss, and identity theft. To protect device integrity and user privacy, all suspicious applications and browser extensions/plug-ins must be eliminated without delay.
| Name | Ads by DefaultTool |
| Threat Type | Adware, Mac malware, Mac virus |
| Additional Information | This application belongs to the Adload malware family. |
| 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 browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious 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. |
OpticalUpdater, StandBoost, ProtocolPort, and ValidMemory are some examples of other apps within the adware category. They may seem legitimate and offer "useful" functionality, however, the advertised functions are seldom operational. This is true of most PUAs. The sole purpose of this unwanted software is to generate profit for the developers. Rather than delivering any real value, PUAs run intrusive advertisement campaigns, hijack browsers, cause redirects, and collect private data.
How did DefaultTool 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 DefaultTool, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate this adware.
Text presented in the pop-up window displayed when DefaultTool adware is present:
"DefaultToold" will damage your computer.
This file was downloaded on an unknown date.
OK
Show in Finder
Decptive installer (fake Flash Player updater) promoting DefaultTool adware;
First installation step:
Second installation step:
Files related to DefaultTool adware that need to be removed:
- ~/Library/Application Support/.[random_string]/Services/com.DefaultTool.service.app
- ~/Library/LaunchAgents/com.DefaultTool.service.plist
- /Library/Application Support/.[random_string]/System/com.DefaultTool.system
- /Library/LaunchDaemons/com.DefaultTool.system.plist
IMPORTANT NOTE! In some cases, malicious applications like DefaultTool alter system proxy settings, thereby causing unwanted redirects to a variety of dubious websites.
The redirects are likely to remain even after removing the application itself. Thus, you must restore them manually.
Step 1: Click on the gear icon in the Dock to navigate to the system settings. If the icon is not present in the Dock, you can find it in the Launchpad.
Step 2: Navigate to the Network settings.
Step 3: Select the connected network and click "Advanced...".
Step 4: Click on the "Proxies" tab and untick all the protocols. You should also assign the settings of each protocol to the default: "*.local, 169.254/16".
Instant automatic Mac 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 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:
- What is DefaultTool?
- STEP 1. Remove DefaultTool related files and folders from OSX.
- STEP 2. Remove DefaultTool ads from Safari.
- STEP 3. Remove DefaultTool adware from Google Chrome.
- STEP 4. Remove DefaultTool ads from Mozilla Firefox.
Video showing how to remove DefaultTool adware using Combo Cleaner:
DefaultTool adware removal:
Remove DefaultTool-related potentially unwanted applications from your "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 adware-related files and folders
Click the Finder icon, from the menu bar. Choose Go, and click Go to Folder...
Check for adware generated files in the /Library/LaunchAgents/ folder:
In the Go to Folder... bar, type: /Library/LaunchAgents/
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 exact same string.
Check for adware generated files in the ~/Library/Application Support/ folder:
In the Go to Folder... bar, type: ~/Library/Application Support/
In the "Application Support" folder, look for any recently-added suspicious folders. For example, "MplayerX" or "NicePlayer", and move these folders to the Trash.
Check for adware generated files in the ~/Library/LaunchAgents/ folder:
In the Go to Folder... bar, type: ~/Library/LaunchAgents/
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 exact same string.
Check for adware generated files in the /Library/LaunchDaemons/ folder:
In the "Go to Folder..." bar, type: /Library/LaunchDaemons/
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.
Scan your Mac with Combo Cleaner:
If you have followed all the steps correctly, your Mac should be clean of infections. To ensure 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 the 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 its virus definition database and click the "Start Combo Scan" button.
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.
After removing files and folders generated by the adware, continue to remove rogue extensions from your Internet browsers.
Remove malicious extensions from Internet browsers
Remove malicious Safari extensions:
Open the Safari browser, from the menu bar, select "Safari" and click "Preferences...".
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 regular browser operation.
- If you continue to have problems with browser redirects and unwanted advertisements - Reset Safari.
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 extensions, select these entries and click "Remove".
- If you continue to have problems with browser redirects and unwanted advertisements - Reset Google Chrome.
Remove malicious extensions from Mozilla Firefox:
Click the Firefox menu 
(at the top right corner of the main window) and select "Add-ons and themes". Click "Extensions", in the opened window locate all recently-installed suspicious extensions, click on the three dots and then click "Remove".
- If you continue to have problems with browser redirects and unwanted advertisements - Reset Mozilla Firefox.
Outstanding!
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