How to uninstall OptimalState adware from your operating system?

Also Known As: Ads by OptimalState
Type: Mac Virus
Distribution: Moderate
Damage level: Medium

How to remove OptimalState adware from Mac?

What is OptimalState?

OptimalState is a rogue application, classified as adware. It also possesses browser hijacker traits. This browser hijacker operates by making modifications to browser settings and promotes illegitimate search engines. On Safari browsers it promotes d2sri.com; however, it may promote other web searchers on different browsers. Furthermore, most adware-type and browser hijackers can spy on users' browsing activity, which makes them a serious privacy concern. Due to the questionable methods used to distribute OptimalState, it is considered to be a PUA (Potentially Unwanted Application). One of the distribution techniques employed for OptimalState is proliferation via fake Adobe Flash Player updates. It is noteworthy that illegitimate software updaters/installers are used to spread not only PUAs but trojans, ransomware and other malware as well.

OptimalState adware

Adware delivers pop-ups, banners, coupons, surveys and other intrusive advertisements. This seriously diminishes the browsing quality, as they overlay webpage content and slow down the browsing speed. Additionally, once clicked on, intrusive ads redirect to various untrustworthy/malicious websites and some can even stealthily download/install software (e.g. PUAs). Browser hijackers reassign browsers' homepage, default search engine and new tab/window URLs - to the addresses of fake web searchers. Hence, with such a piece of software installed: every new tab/window opened and search query typed into the URL bar - redirect to the promoted address. With OptimalState installed on Safari browsers, the aforementioned actions redirect to d2sri.com (it may redirect to other web searchers). Illegitimate search engines are rarely able to generate search results, so they tend to redirect to (or cause redirection chains ending with) Google, Yahoo, Bing and other genuine ones. Browser hijackers can also undo any changes users attempt to make to their browsers and/or deny access to the browser's settings outright. Therefore, recovering a hijacked browser is impossible without removing the software affecting it. As mentioned in the introduction, most PUAs (adware and browser hijackers) have data tracking abilities. They can monitor browsing activity (URLs visited, pages viewed, search queries typed, etc.) and gather 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). In summary, presence of unwanted software on devices can lead to system infections, financial losses, severe privacy issues and even identity theft.

Threat Summary:
Name Ads by OptimalState
Threat Type Adware, Mac malware, Mac virus
Detection Names Avast (MacOS:AdAgent-L [Adw]), Sophos AV (AdLoad (PUA)), ESET-NOD32 (Multiple Detections), Kaspersky (Not-a-virus:HEUR:AdWare.OSX.Adload.h), 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.

ElementaryUnitProductiveRotatorExpandedCommand and RecordEnumerator are some examples of other adware-type apps. They appear legitimate and harmless. Users are enticed into download/installation and/or purchase with various "useful" functionalities. However, the promised features are seldom operational. This is true of practically all PUAs. The only goal of unwanted applications is to generate revenue for the developers. Therefore, instead of delivering on any promises, PUAs can run intrusive advertisement campaigns, hijack browsers, cause redirects and collect private data.

How did OptimalState install on my computer?

PUAs are distributed through download/installation setups of other software. This deceptive marketing technique of pre-packing regular programs with unwanted or malicious additions - is termed "bundling". Rushed download/installation processes (e.g. ignored terms, skipped steps and sections, etc.) increase the risk of unintentionally allowing bundled content into the system. Select PUAs have "official" download 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 before download/installation and/or purchase. All downloads must be done from official and verified sources. Since untrustworthy download channels, e.g. unofficial and free file-hosting websites, Peer-to-Peer sharing networks and other third party downloaders - often offer deceptive and/or bundled content. When downloading/installing, it is recommended to read terms, study all available options, use the "Custom" or "Advanced" settings and opt-out from supplementary apps, tools, features and other additions. Intrusive adverts appear legitimate, however they redirect to various questionable pages (e.g. gambling, pornography, adult-dating, and so on). In case of encounters with such ads and/or redirects, the system must be inspected and all suspicious applications and browser extensions/plug-ins detected - immediately removed from it. If your computer is already infected with OptimalState, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate this adware.

OptimalState adware distributed via fake Flash Player updater/installer:

Delusive installer used to promote OptimalState adware

Pop-up window displayed once OptimalState adware's installation is over:

Pop-up displayed once OptimalState installation is complete

Appearance of OptimalState adware promoting d2sri.com fake search engine (GIF):

Appearance of OptimalState adware promoting d2sri.com (GIF)

OptimalState adware installed onto the Safari browser:

OptimalState adware installed onto Safari

OptimalState adware's installation folder:

OptimalState 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 OptimalState adware using Combo Cleaner:

OptimalState adware removal:

Remove OptimalState-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 optimalstate 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 OptimalState removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove ads by optimalstate 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 optimalstate 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 optimalstate 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 OptimalState 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 OptimalState on your mobile device.
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