PUA:Win32/ICBundler — What is the ICBundler?

Written by Wilbur Woodham
PUA:Win32/ICBundler is a typical example of a potentially unwanted program. That kind of malicious programs usually gets on your PC together with other applications. It can mimic a useful application, however, the behavior of PUA:Win32/ICBundler uncovers its real nature.
Wilbur Woodham
Wilbur Woodham
IT Security Expert

It is better to prevent, than repair and repent!

When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
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ICBundler is a detection for BitTorrent.

Microsoft Defender may display to you the PUA:Win32/ICBundler detection when you have a BitTorrent app installed on your computer. That program is a client for peer-to-peer networking. The application allows you to get various files from the other computer over the Internet, connecting to various computers by their IP-addresses. P2P networks are exploited heavily to distribute viruses, that’s why Defender detects it and offers you to block that “threat”.

Servers/IP addresses are often shared by multiple sites, so while what you are downloading through BitTorrent may be perfectly safe, some of the sites hosted on some of the IP addresses that BitTorrent connects to may be malicious. Meanwhile, in total, BitTorrent is not a threat.

File sharing involves using technology that allows internet users to share files that are housed on their individual computers. Peer-to-peer (P2P) applications, such as those used to share music files, are some of the most common forms of file-sharing technology. However, P2P applications introduce security risks that may put your PC in danger.
BitTorrent detection

Does your antivirus regularly report about the “ICBundler”?

If you have actually seen a message suggesting the “PUA:Win32/ICBundler found”, you have nothing to worry about. BitTorrent application cannot inject a virus of any sort into your computer. Such messages just alarms you that the further usage of BitTorrent app may be dangerous. And these words are not just rumors – a lot of ransomware attack cases in 2020 happened exactly after the use of malevolent P2P seeding.

PUA:Win32/ICBundler found

Microsoft Defender: “PUA:Win32/ICBundler”

There are several ways to terminate that risk. You can either delete the BitTorrent, or ignore that notification, but both of these ways will not guarantee you safety. Virus distributors are extremely sly, so it is important to secure your PC from any kind of attack. Microsoft Defender is not a thing you can rely on. That program is integrated in the system, and can be stopped through the Group Policies in several clicks. Malware creators exploit that security breach heavily, hence, you will not be able to scan your device and remove the threats after the attack. To guarantee that PUA:Win32/ICBundler will not turn in something serious, and to provide you an invulnerable antivirus protection, you can use GridinSoft Anti-Malware.

How to scan for malware, spyware, ransomware, adware, and other threats.

If your computer is exceptionally slow, the website opens weirdly, or if you see advertisements in places you’ve never expected, it’s possible that PUA:Win32/ICBundler is not just a scary notification. The range of viruses you can get is wide, and their symptoms are even more diverse. Spyware will certainly track all your activities or redirect your search or web page to the areas you do not want to visit. Adware may contaminate your browser and the whole operating system, showing you the obtrusive banners.

Irrespective of the type of trouble with your PC, the primary step is to check it with Gridinsoft Anti-Malware. This is the most effective tool to discover and also cure your PC. However, it’s not a simple antivirus software application. Its mission is to battle contemporary dangers. It is the only product on the market that can clean up the PC from spyware and various other viruses that aren’t even identified by routine antivirus programs. Download, install, and run Gridinsoft Anti-Malware, after that check your PC. It will certainly direct you via the system cleaning process. You do not have to buy a permit to cleanse your PC. The first permit provides you 6 days of an entirely cost-free trial. However, if you intend to secure on your own from permanent dangers, you may require to consider acquiring the certificate. In this manner, we can ensure that your system will no longer be contaminated with infections.

How to scan your PC for viruses?

The main sign of malware injection, which you can spectate on your device, is the general slowdown. Malware activity can consume a lot of hardware capacity, especially if we are talking about coin miners. You must not ignore these signs, because, as I have mentioned before, the efficiency of malware depends on the time you give it for actions. Forehanded detection of malicious items is also the way to prevent the appearance of various other viruses.

Regardless of the exact symptoms, you need to scan your device with the proper anti-malware software. Besides the aforementioned disadvantages, Microsoft Defender also has a problem with database updates. That antivirus tool cannot update its detections as other tools do. To apply the new databases, you need to install all past detection database updates, and get the newest ones, performing several reboots in the process. Because of such a long update cycle, Defender cannot provide the proper scanning functionality. GridinSoft Anti-Malware is able to detect the viruses at any moment, since its detection lists are updated every hour.

Use Safe Mode to prevent the virus launching.

Safe mode

If the PUA:Win32/ICBundler lead to severe malware installation, you need to avoid its launching before using any removal guides. For this objective, you need to start Windows in Safe Mode, thus avoiding the system from loading auto-startup items. Primary targer for such a restriction is malware. Scan your system with Gridinsoft in Safe Mode. This will certainly aid you in discovering viruses that can not be tracked in the regular mode.

Use Gridinsoft to remove the hazards.

GridinSoft Anti-Malware

It’s not enough to use the antivirus for the security of your computer. It would help if you had much more extensive antivirus software. Not all malware can be detected by regular antivirus scanners that mainly look for virus-type dangers. Your system may teem with “trash”, for instance, toolbars, browser plugins, unwanted online search engines, bitcoin-miners, as well as various other sorts of unwanted software used for earning money on your inexperience. Beware while downloading and installing apps online to stop your tool from being filled with unwanted toolbars and various other junk applications.

However, if your system has already obtained a certain unwanted application, you will make your mind to erase it. The majority of the antivirus programs are uncommitted regarding PUAs (potentially unwanted applications). To get rid of such programs, I suggest acquiring Gridinsoft Anti-Malware. If you use it regularly to scan your PC, it will certainly help you eliminate malware that was missed out on by your antivirus software.

Frequently Asked Questions

🤔 How Do I Know My Windows 10 PC got some viruses through the BitTorrent (PUA:Win32/ICBundler)?


There are many ways to tell if your Windows 10 computer has been infected. Some of the warning signs include:

  • Computer is very slow.
  • Applications take too long to start.
  • Computer keeps crashing.
  • Your friends receive spam messages from you on social media.
  • You see a new extension that you did not install on your Chrome browser.
  • Internet connection is slower than usual.
  • Your computer fan starts up even when your computer is idle.
  • You are now seeing a lot of pop-up ads.
  • You receive antivirus notifications.

Take note that the symptoms above could also arise from other technical reasons. However, to be on the safe side, we suggest that you proactively check whether you do have malicious software on your computer. One way to do that is by running a malware scanner.

🤔 How to scan my PC with Microsoft Defender?


Most of the time, Microsoft Defender will neutralize threats before they ever become a problem. If this is the case, you can see past threat reports in the Windows Security app.

  1. Open Windows Settings. The easiest way is to click the start button and then the gear icon. Alternately, you can press the Windows key + i on your keyboard.
  2. Click on Update & Security
  3. From here, you can see if your PC has any updates available under the Windows Update tab. This is also where you will see definition updates for Windows Defender if they are available.
  4. Select Windows Security and then click the button at the top of the page labeled Open Windows Security.

    Windows Security

  5. Select Virus & threat protection.
  6. Select Scan options to get started.

    Windows Security Scan options

  7. Select the radio button (the small circle) next to Windows Defender Offline scan Keep in mind, this option will take around 15 minutes if not more and will require your PC to restart. Be sure to save any work before proceeding.
  8. Click Scan now

If you want to save some time or your start menu isn’t working correctly, you can use Windows key + R on your keyboard to open the Run dialog box and type “windowsdefender” and then pressing enter.

From the Virus & protection page, you can see some stats from recent scans, including the latest type of scan and if any threats were found. If there were threats, you can select the Protection history link to see recent activity.

If the guide doesn’t help you to remove PUA:Win32/ICBundler virus, please download the GridinSoft Anti-Malware that I recommended. Also, you can always ask me in the comments for getting help.

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Wilbur Woodham
How to Remove PUA:Win32/ICBundler Malware

Name: PUA:Win32/ICBundler

Description: If you have seen a message showing the “PUA:Win32/ICBundler found”, then it’s an item of excellent information! The pc virus ICBundler was detected and, most likely, erased. Such messages do not mean that there was a truly active ICBundler on your gadget. You could have simply downloaded and install a data that contained PUA:Win32/ICBundler, so Microsoft Defender automatically removed it before it was released and created the troubles. Conversely, the destructive script on the infected internet site can have been discovered as well as prevented prior to triggering any kind of issues.

Operating System: Windows

Application Category: Potentially Unwanted Software

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About the author

Wilbur Woodham

I was a technical writer from early in my career, and consider IT Security one of my foundational skills. I’m sharing my experience here, and I hope you find it useful.

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