The computer program known as PUA:Win32/ICBundler is a detector for malicious software that seeks to take control of both the system and the internet browser. This Microsoft Defender Antivirus program detection includes stand-alone viruses and browser extensions that are often installed on a computer without the user’s consent.

It usually happens that PUA:Win32/ICBundler shows up on the computer by accident. Typically, harmful software or shareware has it embedded. After this virus becomes active on the computer, it may do a variety of things that can irritate the user. When it detects that the web user is surfing the internet, it often shows pop-up ads and redirects.

Image of PUA:Win32/ICBundler

How does it infect the computer?

Malicious software bundles may allow PUA:Win32/ICBundler to infect the computer. It could be included with shareware or freeware. This danger sometimes comes with a serial key generator or software that has been downloaded illegally from websites.

Remember that in order to propagate their virus, attackers these days also depend on an advertising effort. For instance, PUA:Win32/ICBundler may be combined with phony software upgrades, and it may employ pushy pop-up ads to get users to download them.

Upon execution, PUA:Win32/ICBundler puts the payload on the computer right away. If the payload is a browser extension, the script is incorporated into Microsoft Edge, Mozilla Firefox, or Google Chrome without the user’s permission.

How does this malware operate?

Cybercriminals created PUA:Win32/ICBundler in order to covertly install a potentially unwanted application (PUA) on the compromised computer. A malicious program with a specific purpose, such as a rogue security tool or system optimizer, might be the cause. Malicious browser extensions have also been identified as PUA:Win32/ICBundler in some instances. In any case, the goal of this virus is to trick victims into paying money by offering them a product or an online customer care service.


Detecting PUA:Win32/ICBundler on a computer typically involves a combination of manual inspection and using specialized tools. Here are some steps you can take to check for adware:

  • Unusual Behavior: Pay attention to any unusual behavior on your computer, such as unexpected pop-up ads, changes to your browser’s homepage, or the appearance of new toolbars.
  • Browser Extensions: Check your browser extensions or add-ons for any unfamiliar or suspicious ones. PUA:Win32/ICBundler often installs browser extensions to display ads.
  • Installed Programs: Review the list of installed programs on your computer. PUA:Win32/ICBundler may appear as legitimate software. Uninstall any programs that you don’t recognize or that seem suspicious.
  • Browser Settings: Examine your browser settings, especially the homepage and default search engine. PUA:Win32/ICBundler often modifies these settings.
  • Antivirus Software: Ensure that your antivirus software is up-to-date and perform a full system scan. Some antivirus programs can detect and remove adware as part of their functionality.

If you are unsure about a file or program, it’s advisable to seek assistance from a professional or a reliable online community to avoid unintended harm to your system.

For more help

There is a family of unwanted programs that includes PUA:Win32/ICBundler. You may see other threats that are part of this category by going to the PUA malware list.

PUA:Win32/ICBundler is also detected as:
AVG Win32:UnwantedSig [PUP]
BitDefender Trojan.GenericKD.45389403
DrWeb Trojan.Vittalia.18899
Emsisoft Application.Downloader (A)
ESET-NOD32 A Variant Of Win32/WebCompanion.B
Malwarebytes PUP.Optional.BundleInstaller
McAfee GenericRXMT-JS!2C250E9B9D31
TrendMicro PUA.Win32.WebCompanion.BA

How to remove PUA:Win32/ICBundler?

To totally remove PUA:Win32/ICBundler from the computer and get rid of relevant viruses and trojans, please execute the procedures as stated on this page. Make sure that you have completely scanned the system with the suggested malware removal tools and virus scanners.

Quick Fix - Scan the PC with Combo Cleaner for Windows

Combo Cleaner is a trusted PC security and optimization tool equipped with a powerful virus and malware detection engine. This program can get rid of hazardous viruses like PUA:Win32/ICBundler through this procedure.

1. Download the application from the following page:

2. Save the file to your preferred location.

3. Double-click the downloaded file CCSetup.exe and install with the default settings.

CC for Windows Installation

4. At the end of the setup process, click Finish to run Combo Cleaner.

5. The tool will update the signature file, please wait for this process to complete.

6. To begin checking for threats like PUA:Win32/ICBundler, click on the Start Scan button. Wait for this scan to finish.

CC for Windows Start Scan

7. At the end of the scan process, click on Remove all threats to delete the PUA:Win32/ICBundler virus, including all malicious objects from the computer.

Free features of Combo Cleaner for Windows include Disk Cleaner, Big Files finder, Duplicate files finder, and Uninstaller. To use antivirus, privacy scanner, and to delete identified threats, users have to upgrade to a premium version.

Please continue with the succeeding removal procedures if you are comfortable manually getting rid of the virus and malicious items linked to it.

Step 1 : Start Windows in Safe Mode With Networking

Windows 10 / 11 Guide

1. Click on the Windows logo and select the Power icon when options pop up.
2. Select Restart from the options while pressing the Shift key on the keyboard.
3. Choose an Option window will appear. Select the Troubleshoot button.
4. In next window, please choose the Advanced Option.
5. On the Advanced Option window, click on Startup Settings, and then, click the Restart button to reboot the computer.
6. When Windows boots in Startup Settings, press the function key F5 or number 5 on the keyboard.

A simpler alternative for Windows 10 users is to scan the computer with Microsoft Defender Offline. This will run a virus scan in the recovery environment.

Windows 8 Guide

1. Click the Windows Start icon in the lower left section of the screen.
2. Open the Search window and type Advanced in the field. It will open General PC Settings.
3. Click on Advanced Startup, and then click on the Restart Now button.
4. Once the computer starts in the Advanced Startup option menu, select Troubleshoot.
5. Next, click on Advanced Options to reveal the next section.
6. Click Startup settings, and then click the Restart button to boot the PC in Startup Settings.
7. Use function key F5 or number key 5 to Enable Safe Mode with Networking.

Step 2 : Run a virus scanner

To remove PUA:Win32/ICBundler, we suggest that you scan the infected computer with this powerful virus removal tool. It can detect and get rid of Trojans, viruses, malware, and adware from the infected computer. To fully protect the computer against PUA:Win32/ICBundler or similar attacks, you can activate Sophos to have real-time scanning and complete defense against all forms of threats.

1. Download Sophos Virus Removal Tool from the link below. Save the file on your computer where you can easily access it.

2. Once the download completes, browse the location of the file. Double-click to run the program and begin the install process.

3. On the first window of installation wizard, click Next to continue. Then, it will display the program’s License Agreement. You need to Accept the terms in order to proceed. If Windows prompts for User Account Control, please click Yes to proceed.

Screenshot of Sophos EULA Page

4. On succeeding windows, click Next or Continue to carry on with the installation. After completing the installation process, Launch Sophos Virus Removal Tool.

5. An internet connection is required when running this scanner in order to download important updates. Make sure that everything is up-to-date to effectively remove viruses like PUA:Win32/ICBundler.

6. Click the Start Scanning button to  carry out the Scan. This will check the system for the presence of malicious objects, malware, and viruses. The tool reveals items that were found linked to PUA:Win32/ICBundler and other suspicious entities. Be sure to remove all identified threats.

Screenshot of Sophos Virus Scan

After executing the above instructions, PUA:Win32/ICBundler should have been completely removed from the computer. If there are still signs of infection or the computer is displaying unusual behaviors, please continue with the remaining procedures.

Step 3 : Double Check with Windows Security Apps

Microsoft Windows has a built-in security application that you can use to double-check if your computer is still infected with PUA:Win32/ICBundler. For Windows 8 and 10/11 users, please run Windows Security. Users of Windows Vista and older versions can utilize Microsoft Security Essentials to remove the PUA:Win32/ICBundler virus.

Windows 8 / 10 / 11 Instructions:

Windows Security is a free tool that was built to help you remove PUA:Win32/ICBundler, viruses, and other malicious items from Windows 8 or Windows 10/11 systems. Follow these procedures to scan your computer with the tool:

1. Tap or click the Search charm, search for Windows Security, and then open the application.

Image of Windows Security Search

2. On the Home tab, click Virus and threat protection from the sidebar.

3. On the main window, click on Scan Options. Then, click on Full Scan button.

Image of Scan Options

4. Lastly, click on the Scan now button to start scanning for the presence of PUA:Win32/ICBundler. The process may take a while to complete.

5. After the scan, Delete/Quarantine identified threats, whether they were relevant to PUA:Win32/ICBundler or not. You may now restart Windows to complete the virus removal process.

How to protect the computer from PUA:Win32/ICBundler?

The initial defense that comes to mind for any computer user is to install an anti-virus or anti-malware program. This move is sensible and probably the most practical way to protect the computer against a PUA:Win32/ICBundler attack. Hence, keep in mind that having security software does not guarantee full protection. The majority of the prevention still lies in being cautious of users, and therefore, we are providing the following information as guidelines to protect the computer from virus infection.

Avoid Malicious Websites

There are enormous numbers of websites that were made for the primary purpose of spreading PUA:Win32/ICBundler. Normally, these sites are involved in integrating malicious pop-up and browser hijacker, that will eventually cause further virus infections. Avoid such websites.

Ignore and Delete Phishing Emails

The mass-mailing of computer viruses gives the attackers the luxury of spreading their malicious code in just one send-off. This will arrive in the inbox as an email that appears to be from a legitimate organization. So, if you receive an unexpected email with a link or an attached file, better delete it immediately.

Do Not Click a Suspicious Link

Links from social media, forums, and blog sites are sometimes being utilized by attackers to drive web users to a malicious page that contains malicious code. Therefore, do not just click on any link, especially if it looks suspicious. Accidental access to the destination site may lead to a PUA:Win32/ICBundler infection.

Be Careful When Downloading Files

Cracked software, serial key generators, and several freeware are seen as another method that spreads the PUA:Win32/ICBundler virus. Avoid acquiring these types of applications, and if there is a need to download freeware or shareware, be sure to obtain it from the official website or trusted providers.

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