How to remove FrequencySkill adware from the operating system?

Also Known As: Ads by FrequencySkill
Type: Mac Virus
Distribution: Low
Damage level: Medium

How to remove FrequencySkill adware from Mac?

What is FrequencySkill?

FrequencySkill is an adware-type application that shares traits with browser hijackers. Following successful installation, this app runs intrusive advertisement campaigns (i.e. delivers various ads), makes modifications to browser settings and promotes fake search engines. FrequencySkill promotes 0yrvtrh.com on Safari browsers and search.adjustablesample.com on Google Chrome browsers. Furthermore, most adware-types and browser hijackers spy on users' browsing activity. Due to the dubious methods used to distribute FrequencySkill, it is also classified as a PUA (Potentially Unwanted Application).

FrequencySkill adware

Adware enables the placement of pop-ups, banners, coupons, surveys, full-page and other intrusive advertisements - typically, on any visited website. These adverts seriously diminish the browsing experience, since they overlay page content and restrict browsing speed. What is more, upon being clicked intrusive ads redirect to untrustworthy/malicious sites and some can even stealthily download/install software (e.g. PUAs). Browser hijackers operate by reassigning browsers' homepage, default search engine and new tab/window URLs - to the addresses of fake web searchers. FrequencySkill also makes these alterations to browsers - in order to promote 0yrvtrh.com (Safari) and search.adjustablesample.com (Google Chrome). Hence, with a browser hijacker installed: every new browser tab/window opened and web search done via the URL bar - redirect to the promoted address; in case of FrequencySkill, either to 0yrvtrh.com or to search.adjustablesample.com. Fake search engines are rarely able to provide search results, so they tend to redirect to Yahoo, Bing, Google and other genuine ones. Additionally, browser hijackers can undo any changes users attempt to make to their browsers, if they permit access to the browser's settings in the first place. Therefore, recovering a hijacked browser is impossible - without removing the software affecting it. As mentioned in the introduction, most PUAs (adware and browser hijackers included) have data tracking abilities. They can monitor browsing activity (URLs visited, pages viewed, search queries typed, etc.) and collect personal information extracted from it (IP addresses, geolocations and other details). To summarize, presence of unwanted apps on devices can lead to system infections, financial losses, severe privacy issues and even identity theft. To ensure device integrity and user safety, all suspect applications and browser extensions/plug-ins must be eliminated without delay.

Threat Summary:
Name Ads by FrequencySkill
Threat Type Adware, Mac malware, Mac virus
Detection Names Avast (MacOS:AdAgent-L [Adw]), SentinelOne (Static ML) (DFI - Suspicious Archive), ESET-NOD32 (A Variant Of OSX/Adware.Synataeb.C), Kaspersky (Not-a-virus:HEUR:AdWare.OSX.Adload.i), Full List (VirusTotal)
Additional Information This application belongs to 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.
▼ Download Combo Cleaner for Mac
To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

DesktopCoordinatorAssistiveDisplaySearchSkillFrequency and OnlineToolSearch are some examples of other apps within the adware category. They appear legitimate and entice users into download/installation with offers of various "handy" functions. However, the promised features are seldom operational. In fact, this applies to practically all PUAs. The only goal of unwanted software is to generate revenue for the developers; to users - it has no real value and can instead cause serious problems. PUAs are designed to deliver intrusive ad campaigns, make modifications to browsers, cause redirects and gather personally identifiable information.

How did FrequencySkill install on my computer?

PUAs can be downloaded/installed together with other products. This false marketing technique of packing ordinary software with unwanted or malicious additions - is called "bundling". Rushed downloads/installations (e.g. ignored terms, skipped steps, etc.) - increase the risk of inadvertently allowing bundled content into the system. Select PUAs have "official" promotional webpages. Intrusive advertisements proliferate these applications as well. Once clicked on, they can execute scripts to download/install PUAs without user consent.

How to avoid installation of potentially unwanted applications?

It is important to research software prior to download/installation. All downloads must be done from official and trustworthy sources. Since dubious channels, like: unofficial and free file-hosting websites, Peer-to-Peer sharing networks and other third party downloaders - commonly offer bundled content. When downloading/installing, it is strongly recommended to read terms, study all available options, use the "Custom" or "Advanced" settings and opt-out from additional apps, tools, features, and so on. Intrusive adverts appear legitimate and harmless, however they redirect to unreliable and questionable sites (e.g. gambling, pornography, adult-dating, etc.). In case of encounters with ads and/or redirects of this kind, users must check their devices and immediately remove all suspicious applications and browser extensions/plug-ins from them. If your computer is already infected with FrequencySkill, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate this adware.

Pop-up window displayed once FrequencySkill adware installation is over:

Pop-up displayed once FrequencySkill installation is done

Appearance of FrequencySkill promoting 0yrvtrh.com (GIF):

FrequencySkill adware promoting the 0yrvtrh.com fake search engine (GIF)

Appearance of FrequencySkill promoting search.adjustablesample.com (GIF):

FrequencySkill adware promoting the search.adjustablesample.com fake search engine (GIF)

FrequencySkill adware installed onto the Safari browser:

FrequencySkill adware installed onto Safari

FrequencySkill adware's installation folder:

FrequencySkill adware install folder

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 three days free trial available.

Quick menu:

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

FrequencySkill adware removal:

Remove FrequencySkill-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 ads by frequencyskill 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.

Ads by FrequencySkill removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove ads by frequencyskill 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.

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

firefox browser iconRemove malicious plug-ins from Mozilla Firefox:

Remove ads by frequencyskill 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.

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

chrome-browser-iconRemove malicious extensions from Google Chrome:

Remove ads by frequencyskill 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.

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

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.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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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.

QR Code
Ads by FrequencySkill QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Ads by FrequencySkill on your mobile device.
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