PUP.Optional.YellowSend by CMI Limited Removal Manual

Security researchers have determined YellowSend by CMI Limited as a potentially unwanted program (PUP) and browser hijacker. Moreover, several AV solutions have detected malware in software developed by the company. What is more troublesome is the distribution method applied by YellowSend – bundling. The PUP has been included in the packages of free software, and it may not have been disclosed properly in the Download Agreement. Or, in other cases, users may not have noticed it by quickly going through the installation process.

YellowSend Threat Classification

As already mentioned, software by CMI Limited is often bound with possible malware. Logically, an anti-malware scanner may detect a threat in the files dropped by YellowSend.

IMPORTANT

AV scanners detect YellowSend as PUP.Optional.YellowSend.

The browser hijacking component in the program means that the user’s home page, search page, new tab page and possibly error page will be altered without his permission. Such alterations are usually disclosed in the Download Agreement of the software. An option to uncheck the alteration may be presented but users tend to neglect these steps. As a result, the browser’s settings are changed. In some cases, restoring the settings to normal can be tricky or challenging.

As reported by MalwareBytes, once installed, YellowSend signs in the following HijackThis log:

→O2 -BHO:YellowSend-{61628E2A-4FF9-4454-992D-D92A8CD27399}-C:\Program Files\YellowSend\YellowSendShellExtension.dll

→O4 – HKLM\..\Run: [YellowSend User Interface] C:\Program Files (x86)\YellowSend\YellowSendUI.exe

→O23 – Service: YellowSend (YellowSendService) – Unknown owner – C:\Program Files (x86)\YellowSend\YellowSendSVC.exe

The YellowSend installer is also likely to perform a list of alterations such as:

• Dropping multiple .exe and .dll files onto the system.
• Adding new registry entries and placing itself in multiple system locations.

PUP.Optional.YellowSend Removal Options

Since anti-malware scanners detect malware in CMI Limited software, manual removal of the threat is not considered the best option. Besides, YellowSend drops multiple files and processes, and may have been installed alongside other software. Bundling is used for monetary reasons and is often cause and effect for malware-related issues.

If you feel confident enough to locate the PUP manually, you can follow the instructions below the article. Remember that the browser’s settings will have to be restored as well.

Recommended

Malware researchers advise you to use an anti-malware scanner to detect all threats associated with PUP.Optional.YellowSend.

Step 1: Remove/Uninstall PUP.Optional.YellowSend in Windows

Here is a method in few easy steps to remove that program. No matter if you are using Windows 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program get left behind, and that can lead to unstable work of your PC, mistakes with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:

Follow the instructions above and you will successfully uninstall PUP.Optional.YellowSend.

Step 2: Remove PUP.Optional.YellowSend from your browser

Remove a toolbar from Mozilla FirefoxRemove a toolbar from Google Chrome Remove a toolbar from Internet Explorer Remove a toolbar from Safari

Start Mozilla Firefox Open the menu window

Select the “Add-ons” icon from the menu

Select PUP.Optional.YellowSend and click “Remove”

After PUP.Optional.YellowSend is removed, restart Mozilla Firefox by closing it from the red “X” in the top right corner and start it again.

Start Google Chrome and Open the drop menu

Move the cursor over “Tools” and then from the extended menu choose “Extensions“

From the opened “Extensions” menu locate PUP.Optional.YellowSend and click on the garbage bin icon on the right of it.

After PUP.Optional.YellowSend is removed, restart Google Chrome by closing it from the red “X” in the top right corner and start it again.

Start Internet Explorer:

Click “‘Tools’ to open the drop menu and select ‘Manage Add-ons’

In the ‘Manage Add-ons’ window, make sure that in the first window ‘Add-on Types’, the drop menu ‘Show’ is on ‘All add-ons’

Select PUP.Optional.YellowSend to remove, and then click ‘Disable’. A pop-up window will appear to inform you that you are about to disable the selected toolbar, and some additional toolbars might be disabled as well. Leave all the boxes checked, and click ‘Disable’.

After PUP.Optional.YellowSend has been removed, restart Internet Explorer by closing it from the red ‘X’ in the top right corner and start it again.

Start Safari

Open the drop menu by clicking on the sprocket icon in the top right corner.

From the drop menu select ‘Preferences’
In the new window select ‘Extensions’
Click once on PUP.Optional.YellowSend
Click ‘Uninstall’

A pop-up window will appear asking for confirmation to uninstall PUP.Optional.YellowSend. Select ‘Uninstall’ again, and the PUP.Optional.YellowSend will be removed.

In order to remove any associated objects that are left after uninstall and detect any other threats, you should:

Step 3: Start Your PC in Safe Mode to Remove PUP.Optional.YellowSend.

Removing PUP.Optional.YellowSend from Windows XP, Vista, 7 systems:

1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
2. Select one of the two options provided below:

– For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.

– For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.

3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.
4. Log on to your computer using your administrator account

While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.

Removing PUP.Optional.YellowSend from Windows 8, 8.1 and 10 systems:

Substep 1:

Open the Start Menu

Substep 2:

Whilst holding down Shift button, click on Power and then click on Restart.

Substep 3:

After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.

Substep 4:

You will see the Troubleshoot menu. From this menu you can choose Advanced Options.

Substep 5:

After the Advanced Options menu appears, click on Startup Settings.

Substep 6:

Click on Restart.

Substep 7:

A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart and boot into Safe Mode so you can scan for and remove PUP.Optional.YellowSend.

Step 4: Remove PUP.Optional.YellowSend automatically by downloading an advanced anti-malware program.

To clean your computer you should download an updated anti-malware program on a safe PC and then install it on the affected computer in offline mode. After that you should boot into safe mode and scan your computer to remove all PUP.Optional.YellowSend associated objects.

Milena Dimitrova

An inspired writer and content manager who has been with SensorsTechForum since the project started. A professional with 10+ years of experience in creating engaging content. Focused on user privacy and malware development, she strongly believes in a world where cybersecurity plays a central role. If common sense makes no sense, she will be there to take notes. Those notes may later turn into articles! Follow Milena @Milenyim

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How to Remove PUP.Optional.YellowSend from Windows.

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Step 1: Scan for PUP.Optional.YellowSend with SpyHunter Anti-Malware Tool

1.1 Click on the "Download" button to proceed to SpyHunter's download page.

Download

Malware Removal Tool

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It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.

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1.2 After you have installed SpyHunter, wait for it to update automatically.

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1.3 After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

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1.4 After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

If any threats have been removed, it is highly recommended to restart your PC.

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Step 2: Boot Your PC In Safe Mode

2.1 Hold Windows key + R

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2.2 The "Run" Window will appear. In it, type "msconfig" and click OK.

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2.3 Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".

Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.

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2.4 When prompted, click on "Restart" to go into Safe Mode.

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2.5 You can recognise Safe Mode by the words written on the corners of your screen.

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Step 3: Uninstall PUP.Optional.YellowSend and related software from Windows

Uninstall Steps for Windows 11

1 Go to the search bar and type "Add or Remove Programs" and then click it.

2 Locate the software that you want to uninstall click on the three dots and click "Uninstall" to begin the process.

3 Follow the uninstall steps until the software has been effectively removed from your computer

Uninstall Steps for Windows 10 and Older Versions

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:

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1 Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.

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2 In the field type in "appwiz.cpl" and press ENTER.

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3 This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall" Follow the instructions above and you will successfully uninstall most programs.

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Step 4: Clean Any registries, Created by PUP.Optional.YellowSend on Your PC.

The usually targeted registries of Windows machines are the following:

• HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
• HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by PUP.Optional.YellowSend there. This can happen by following the steps underneath:

4.1 Open the Run Window again, type "regedit" and click OK.

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4.2 When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

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4.3 You can remove the value of the virus by right-clicking on it and removing it.

Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

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Video Removal Guide for PUP.Optional.YellowSend (Windows).

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Get rid of PUP.Optional.YellowSend from Mac OS X.

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Step 1: Uninstall PUP.Optional.YellowSend and remove related files and objects

1.1 Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:

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1.2 Find Activity Monitor and double-click it:

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1.3 In the Activity Monitor look for any suspicious processes, belonging or related to PUP.Optional.YellowSend:

Tip: To quit a process completely, choose the “Force Quit” option.

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1.4 Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.

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1.5 In the Applications menu, look for any suspicious app or an app with a name, similar or identical to PUP.Optional.YellowSend. If you find it, right-click on the app and select “Move to Trash”.

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1.6 Select Accounts, after which click on the Login Items preference.

Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to PUP.Optional.YellowSend. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.

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1.7 Remove any left-over files that might be related to this threat manually by following the sub-steps below:

• Go to Finder.
• In the search bar type the name of the app that you want to remove.
• Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
• If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove PUP.Optional.YellowSend via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as PUP.Optional.YellowSend. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.

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Step 2: Scan for and remove PUP.Optional.YellowSend files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as PUP.Optional.YellowSend, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.

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Click the button below below to download SpyHunter for Mac and scan for PUP.Optional.YellowSend:

Download

SpyHunter for Mac

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Video Removal Guide for PUP.Optional.YellowSend (Mac)

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Remove PUP.Optional.YellowSend from Google Chrome.

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Step 1: Start Google Chrome and open the drop menu

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Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"

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Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.

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Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.

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Erase PUP.Optional.YellowSend from Mozilla Firefox.

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Step 1: Start Mozilla Firefox. Open the menu window:

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Step 2: Select the "Add-ons" icon from the menu.

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Step 3: Select the unwanted extension and click "Remove"

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Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.

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Uninstall PUP.Optional.YellowSend from Microsoft Edge.

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Step 1: Start Edge browser.

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Step 2: Open the drop menu by clicking on the icon at the top right corner.

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Step 3: From the drop menu select "Extensions".

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Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.

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Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.

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Remove PUP.Optional.YellowSend from Safari

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Step 1: Start the Safari app.

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Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.

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Step 3: From the menu, click on "Preferences".

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Step 4: After that, select the 'Extensions' Tab.

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Step 5: Click once on the extension you want to remove.

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Step 6: Click 'Uninstall'.

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the PUP.Optional.YellowSend will be removed.

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How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.

Eliminate PUP.Optional.YellowSend from Internet Explorer.

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Step 1: Start Internet Explorer.

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Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'

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Step 3: In the 'Manage Add-ons' window.

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Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.

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Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.

Remove Push Notifications from Your Browsers

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Turn Off Push Notifications from Google Chrome

To disable any Push Notices from Google Chrome browser, please follow the steps below:

Step 1: Go to Settings in Chrome.

Step 2: In Settings, select “Advanced Settings”:

Step 3: Click “Content Settings”:

Step 4: Open “Notifications”:

Step 5: Click the three dots and choose Block, Edit or Remove options:

Remove Push Notifications on Firefox

Step 1: Go to Firefox Options.

Step 2: Go to “Settings”, type “notifications” in the search bar and click "Settings":

Step 3: Click “Remove” on any site you wish notifications gone and click “Save Changes”

Stop Push Notifications on Opera

Step 1: In Opera, press ALT+P to go to Settings.

Step 2: In Setting search, type “Content” to go to Content Settings.

Step 3: Open Notifications:

Step 4: Do the same as you did with Google Chrome (explained below):

Eliminate Push Notifications on Safari

Step 1: Open Safari Preferences.

Step 2: Choose the domain from where you like push pop-ups gone and change to "Deny" from "Allow".

PUP.Optional.YellowSend-FAQ

What Is PUP.Optional.YellowSend?

The PUP.Optional.YellowSend threat is adware or browser redirect virus.

It may slow your computer down significantly and display advertisements. The main idea is for your information to likely get stolen or more ads to appear on your device.

The creators of such unwanted apps work with pay-per-click schemes to get your computer to visit risky or different types of websites that may generate them funds. This is why they do not even care what types of websites show up on the ads. This makes their unwanted software indirectly risky for your OS.

What Are the Symptoms of PUP.Optional.YellowSend?

There are several symptoms to look for when this particular threat and also unwanted apps in general are active:

Symptom #1: Your computer may become slow and have poor performance in general.

Symptom #2: You have toolbars, add-ons or extensions on your web browsers that you don't remember adding.

Symptom #3: You see all types of ads, like ad-supported search results, pop-ups and redirects to randomly appear.

Symptom #4: You see installed apps on your Mac running automatically and you do not remember installing them.

Symptom #5: You see suspicious processes running in your Task Manager.

If you see one or more of those symptoms, then security experts recommend that you check your computer for viruses.

What Types of Unwanted Programs Are There?

According to most malware researchers and cyber-security experts, the threats that can currently affect your device can be rogue antivirus software, adware, browser hijackers, clickers, fake optimizers and any forms of PUPs.

What to Do If I Have a "virus" like PUP.Optional.YellowSend?

With few simple actions. First and foremost, it is imperative that you follow these steps:

Step 1: Find a safe computer and connect it to another network, not the one that your Mac was infected in.

Step 2: Change all of your passwords, starting from your email passwords.

Step 3: Enable two-factor authentication for protection of your important accounts.

Step 4: Call your bank to change your credit card details (secret code, etc.) if you have saved your credit card for online shopping or have done online activities with your card.

Step 5: Make sure to call your ISP (Internet provider or carrier) and ask them to change your IP address.

Step 6: Change your Wi-Fi password.

Step 7: (Optional): Make sure to scan all of the devices connected to your network for viruses and repeat these steps for them if they are affected.

Step 8: Install anti-malware software with real-time protection on every device you have.

Step 9: Try not to download software from sites you know nothing about and stay away from low-reputation websites in general.

If you follow these recommendations, your network and all devices will become significantly more secure against any threats or information invasive software and be virus free and protected in the future too.

How Does PUP.Optional.YellowSend Work?

Once installed, PUP.Optional.YellowSend can collect data using trackers. This data is about your web browsing habits, such as the websites you visit and the search terms you use. It is then used to target you with ads or to sell your information to third parties.

PUP.Optional.YellowSend can also download other malicious software onto your computer, such as viruses and spyware, which can be used to steal your personal information and show risky ads, that may redirect to virus sites or scams.

Is PUP.Optional.YellowSend Malware?

The truth is that PUPs (adware, browser hijackers) are not viruses, but may be just as dangerous since they may show you and redirect you to malware websites and scam pages.

Many security experts classify potentially unwanted programs as malware. This is because of the unwanted effects that PUPs can cause, such as displaying intrusive ads and collecting user data without the user’s knowledge or consent.

About the PUP.Optional.YellowSend Research

The content we publish on SensorsTechForum.com, this PUP.Optional.YellowSend how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific, adware-related problem, and restore your browser and computer system.

How did we conduct the research on PUP.Optional.YellowSend?

Please note that our research is based on independent investigation. We are in contact with independent security researchers, thanks to which we receive daily updates on the latest malware, adware, and browser hijacker definitions.
Furthermore, the research behind the PUP.Optional.YellowSend threat is backed with VirusTotal.
To better understand this online threat, please refer to the following articles which provide knowledgeable details.