How to Remove a Worm Virus

Worms are rapidly-spreading viruses transmitted through insecure networks, e-mail attachments, software downloads, and social media links.^{[1]XResearch source} Worms primarily affect PCs, but Mac users can unknowingly spread them throughout the Internet. And while viruses don’t affect Android or iOS, they can fall prey to other malware. Learn how to remove a worm from your Windows PC with a virus-removal tool, remove malware from Macs and mobile devices, and how to best protect yourself from malware in the future.

Method 1

Method 1 of 4:

Windows

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1
Download a virus removal tool like Microsoft's Malicious Software Removal Tool.^{[2]XResearch source} If you think you have a worm virus, download a dedicated virus removal tool to scan for and remove viruses. Do this even if you already have antivirus software, as the software on your computer may be infected. Once you’ve chosen a virus removal tool, download it to your desktop.
- Most companies that sell antivirus software also offer free virus removal tools. Some options besides Microsoft’s own are Kaspersky Free Virus Scan and Sophos Virus Removal Tool.
- If you can’t use a web browser on the infected computer, use a different computer to download a virus removal tool, then burn it to a CD or DVD. Insert the burned disc into the infected machine, press ⊞ Win+E to launch File Explorer, then double-click your DVD-ROM drive to find the tool.
2
Press ⊞ Win+S to open Search, type “restore”, then click “Create a restore point” in the search results.^{[3]XResearch source} Worms and other malware can hide in the System Restore files, which may hide them from virus removal tools. You should turn off System Restore before running the removal tool to prevent this from happening.
- Windows 7 and Vista users should type “protection” into the search box instead, then click “System protection.”
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This works on any Windows version.
4
Disable your third-party antivirus program if you have one. If you have a separate antivirus program like McAfee or Kaspersky, open it and find the “settings” or “options” area, then find an option for “disable” or “turn off.”
- Once the program is disabled, you’ll probably see a message that says your computer is at risk. You can ignore it for now as you’ll be restoring it soon.
5
Restart the computer to the login screen, then hold ⇧ Shift as you click “Power,” then “Restart”.^{[4]XResearch source} The computer will then reboot into the Chose an Option screen. This begins the process of booting into Safe Mode on a Windows 8 or 10 computer.
- To access Safe Mode on Windows 7 or Vista: Reboot the computer and tap the F8 key repeatedly as it restarts until you arrive at the Boot Options screen.
6
If you are using Windows 10 or Windows 8, click “Troubleshoot,” then “Advanced Options.”
- In Windows 7, use the arrow keys to select “Safe Mode with Networking,” then press ↵ Enter to boot into that mode. You are now in safe mode and can skip the next few steps intended for Windows 10/8 users.
The computer will reboot a second time.
Or, if you inserted a CD/DVD that contains the tool, double-click the tool to open it.
The scan will take at least several minutes to complete. Depending on the computer, software, and infection level, this may take over an hour.
11
Quarantine worms and other malware. Once the virus scan is complete, the antivirus tool will report its results. If you see prompts to “quarantine” (another term for safely removing the malware from your PC), follow them so that the files are properly destroyed.
- Some programs, such as Microsoft’s Malicious Software Removal Tool, will remove the malware/worms without your intervention.^{[5]XResearch source}
- If nothing is found, it’s very likely that you don't have a worm virus. If you still think you may be infected, try one of the other virus-removal tools.
The computer will reboot normally, without a worm infection.
Don't skip this step! To allow Windows to create automatic restore points for emergency use, return to the System Restore (called "System Protection" in Windows Vista and 7) dialog and check “Turn on system protection”.
If you previously disabled your antivirus software, turn it back on now.
15
Enable Windows Defender if you don’t presently have other antivirus protection. Windows Defender is an antivirus/anti-malware suite built into Windows. Most PC manufacturers install free trial versions of antivirus software suites, which disable Defender by default. Enabling Defender is a great (and free!) way to keep your computer safe from worms.
- Open the start menu, (
  ) then type “defender”. Click “Windows Defender” in the search results, then (in Windows 8, 10) click “Settings,” and flip the following switches to the “On” position: Real-time protection, Cloud-based protection, and Automatic sample submission.
- In Windows Vista and 7, click “Tools,” then “Options,” and then “Administrator.” Select “Use this program,” then click “Save”.

Method 2

Method 2 of 4:

Mac

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1
Make sure your Mac is up-to-date.^{[6]XResearch source} All modern Macs come equipped with their own built-in malware protection. If your system is not configured to receive regular updates, malware can slip through the cracks. Click “System Preferences” in the Apple menu, then click “App Store,” and make sure the following two options are checked:
- Automatically check for updates
- Install system data files and security updates
If you’ve installed MacKeeper and are receiving pop-up messages claiming you have a worm virus, do not follow their links or enter your credit card information.^{[7]XResearch source} MacKeeper is known malware and should be removed from your system.
3
Download and install an anti-malware program. Because there are no Mac “viruses,” it’s likely that a suspected worm virus is actually a different form of malware, like adware (excessive and tricky advertisements) or ransomware (software that holds your files hostage until your credit card information is provided).^{[8]XResearch source} Regardless of its type, you’ll want to remove it from your Mac.
- Malwarebytes Anti-Malware for Mac and Sophos Antivirus for Mac will both scan for and remove all adware at no cost.
- There are many paid options to scan and remove malware from Macs, but they are not typically recommended by experts.^{[9]XResearch source}
Start your anti-malware program and find the link that says “Update” (or something similar). Before running a scan, you’ll want the program to have up-to-date malware information.
The actual name of the button will vary depending on your anti-malware program. The scan will take several moments to complete.
If the program finds malware, follow any prompts to “quarantine” the rogue files. This will remove them from your system without sending them to the Trash.
7
Avoid malware in the future. To keep your computer free of malware (including worms), Apple recommends taking certain precautions when using the Internet.
- Never open e-mail attachments unless they were sent from a legitimate source.
- Limit downloads to the Mac App Store and identified developers. Mac checks all apps on its App Store for viruses and trusts other developers registered with Apple. To configure this feature on your Mac, select “System Preferences” from the Apple menu, click “Security & Privacy,” then “General.” There, select “Mac App Store and identified developers.”

Method 3

Method 3 of 4:

Android

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^{[10]XResearch source} Android keeps the viruses at bay, but other malware (like adware) can slip through the cracks. If you’re suddenly being pummeled by pop-ups and browser redirects, you likely have malware which came from downloading an app that claimed to speed up your phone, protect it from viruses, or give you added customization options (like themes). First we’ll get rid of the bad stuff that may have crept into Chrome.
2
Tap “Privacy, then “Clear Browsing Data”. Malware may be hiding in the temporary Internet files stored on your phone.
- This action won’t delete your personal data, but you’ll be logged out from the websites you had open.
4
Tap the app drawer icon to view all installed apps. Scroll through your apps to look for anything that you don’t remember installing or do not trust.
- Pay close attention to lesser-known games, battery savers, “cleaners,” and apps that claim to protect you from various threats.
If you still see pop-ups or redirects, you should back up and reset your Android.
9
Stay safe in the future. There’s no need to install antivirus protection your iPhone. You just need to know what to look for.
- Don’t click on any pop-ups that claim you have malware.^{[11]XResearch source} These messages will never come from your Android—they are always ads, even when they look just like a legitimate message.
- Before downloading an app, read through its reviews and ratings in the Play Store.

Method 4

Method 4 of 4:

iPhone

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1
Uninstall apps you don’t trust or recognize. Your iPhone protects you from viruses, but you may still encounter other malware, like adware.^{[12]XResearch source} Usually malware comes from installing an untrustworthy app—often the kind that claims to speed up or protect your iPhone. Scroll through your apps and look for apps you don’t recognize or use, then remove them from your phone.
- Pay close attention to lesser-known games, battery savers, “cleaners,” and apps that claim to protect you from various threats.
If you’re experiencing pop-up ads or Safari keeps redirecting you to the wrong site, there might be something strange in your browsing data.
^{[13]XResearch source} In earlier versions of iOS, tap “Clear cookies and data.”
6
Hold the power and sleep/wake button down to hard reboot your iPhone. When the phone returns to the home screen, try using your web browser normally. As long as you’ve removed the bad app and cleared all web data, your phone should be clear of malware.
- If you’re still experiencing symptoms, back up and restore your iPhone.^{[14]XResearch source}
7
Stay safe in the future. There’s no need to install antivirus or antimalware protection your iPhone. You just need to know what to look for.
- Don’t click on any pop-ups that claim you have malware. These messages will never come the iPhone itself—they are always ads, even when they look very convincing.
- Before downloading an app, read through its reviews and ratings in the App Store.

How Do I Get Rid Of a Virus On My Computer?

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Question
What's the best antivirus software?
Michael Thompson-Brown
Cybersecurity Expert
Michael Thompson-Brown is a Cybersecurity Expert based in Portland, Maine. He is the owner and founder of PCRescue!, a company that provides cybersecurity and data management solutions to small businesses and individuals. Michael has over 25 years of experience in the IT industry and is a certified ethical hacker. He is passionate about helping clients protect their data and systems from malicious attacks and helping them optimize their online presence and reach. He received a Master’s degree in Cybersecurity and Information Assurance from Western Governors University, and a Bachelor’s degree in Business Administration from the University of Phoenix.
Michael Thompson-Brown
Cybersecurity Expert
Expert Answer
The built-in antivirus software provided by Windows or Mac is better than third-party alternatives due to its seamless integration with the operating system, regular updates, deeper access to system functions, and user-friendly interface. This integration ensures efficient resource usage and compatibility, while automatic updates keep the software current with the latest threats. Additionally, being developed by the same company as the operating system, built-in antivirus solutions often provide better compatibility and require minimal configuration, making them suitable for all users.
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Can I use Avast, CCleaner or Smadav to remove the worms?
R2_d2000
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Avast would be the best one of the ones that you listed. CCleaner is not a virus removal tool, and Smadav, while it can remove some viruses, is not 100% effective.
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We have an HP updated to Windows 10 with a worm. Will this work for that computer?
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Yes, the steps will work for a Windows 10 upgraded PC.
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Tips

Never open an email attachment from a user you don’t trust.
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If people are receiving emails from you that you didn’t send, it could be a worm. However, someone may have cracked your email password. Check your web mail accounts, or contact the administrator of your email account.
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Refrain from downloading files and applications from sites you don’t recognize.
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