If the anti-virus application detects a suspicious file that poses a threat to data, the computer, and its network environment, it may issue a warning about the Trojan:JS/Cryxos virus. Typically, the presence of Trojan:JS/Cryxos indicates the existence of a malicious web tool disguised as a privacy protection add-on for a browser program. This tool utilizes a Java Script file to carry out various malicious actions on the infected computer.

Image of Trojan:JS/Cryxos

How does it infect the computer?

Trojan:JS/Cryxos often enters the computer through freeware or shareware downloaded from untrusted sources. Additionally, it may infiltrate the system via fake software updates, spam emails, and drive-by-download websites.

Upon execution by the user, Trojan:JS/Cryxos installs a malicious browser extension in the internet application. This extension operates as an add-on, masquerading as a valuable tool for maintaining the privacy of web browsing sessions. Sometimes, software labeled Trojan:JS/Cryxos claims to enhance online search safety and improve the overall web browsing experience.

Trojan:JS/Cryxos is a significant threat that can display unsolicited content in the browser and generate pop-up advertisements redirecting to questionable sites, potentially leading to virus or malware infections.

How does this malware operate?

Typically, Trojan:JS/Cryxos manifests as a browser extension aiming to control internet programs like Google Chrome, Mozilla Firefox, or Microsoft Edge. Its primary goal is to generate online revenue through various ad campaigns.

To ensure the optimal condition of the browser application, it is crucial to remove Trojan:JS/Cryxos from the computer. The next section provides a comprehensive guide for eliminating this threat.


  • Trojan:JS/Cryxos may trigger warnings from anti-virus applications when they detect a suspicious file, signaling a potential threat to data, the computer, and its network environment.
  • These Trojans often disguise themselves as seemingly benign browser extensions or privacy protection add-ons, employing Java Script files to execute various malicious actions on the infected computer.
  • Users might observe unwanted changes in their internet application, such as the installation of a malicious browser extension that masquerades as a useful tool for enhancing privacy during web browsing sessions.
  • Trojan:JS/Cryxos commonly manifest through the display of pop-up advertisements, particularly those redirecting users to dubious websites. These ads can disrupt normal browsing activities and increase the risk of additional virus or malware infections.
  • Frequent redirection to unfamiliar websites, especially following the download of content from untrusted sources or the execution of suspicious software, may serve as an indicator of the presence of Trojan:JS/Cryxos on the computer.
Trojan:JS/Cryxos is also detected as:
Avast URL:TechScam
Avira JS/Phish.G7
BitDefender JS:Trojan.Cryxos.7869
ESET-NOD32 HTML/Phishing.Agent.DKU
F-Secure Trojan:JS/Cryxos
Fortinet HTML/Phishing.A!tr
Ikarus Phishing.HTML.Doc
Symantec JS.Cryxos!inf
TrendMicro Trojan.HTML.NEMUCOD.EB

For more help

Numerous versions of threats, including Trojan:JS/Cryxos, exist within the same family. For information on related threats and appropriate removal techniques, please refer to the Trojan Script category.

How to remove Trojan:JS/Cryxos?

To totally remove Trojan:JS/Cryxos 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.

Step 1 : Scan the PC with Combo Cleaner for Windows

Combo Cleaner is a trusted computer security and optimization tool equipped with a powerful virus and malware detection engine. This program can get rid of computer virus like Trojan:JS/Cryxos 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.

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

5. The tool will update the database file; please wait for this process to complete.

6. To begin checking for threats like Trojan:JS/Cryxos, click on the Start Scan button. Wait for this scan to finish.

Screenshot of Combo Cleaner PC

7. At the end of the scan process, click on Remove all threats to delete Trojan:JS/Cryxos malware, including all malicious objects from the computer.

To fully optimize the features of antivirus and privacy scanners, users may have to upgrade to the premium version.

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

Step 2 : Start Windows in Safe Mode With Networking

The method of running Windows in Safe Mode before running a virus scan is effective in getting rid of Trojan:JS/Cryxos. This process can prevent most viruses and malware from loading, making it easier to detect and remove them.

1. On the Windows Search bar, please type msconfig.

Screenshot of Win 11 Search

2. Select and open System Configutation on the list of found results.

3. Once you are in the System Configuration window, go to the Boot tab.

Screenshot of Msconfig Win 11

4. Under the Boot Options area, please check Safe Boot so that it starts in Safe Mode after restarting.

5. Next, select Network. This will allow Windows to boot in Safe Mode with Networking.

6. Lastly, click on Apply and OK to save the changes.

7. Please restart Windows.

Do not forget to restore the normal boot process of Windows after running the virus scan. Simply repeat the method above, and this time, uncheck the Safe Boot option to run Windows normally.

Step 3 : Run Sophos Home Virus Scanner

To remove Trojan:JS/Cryxos automatically, scanning the computer with this powerful virus and malware removal tool is recommended. This scanner does not just uncover known threats like viruses or malware; it is also effective in discovering harmful files associated to Trojan:JS/Cryxos.

1. Please click on the link below to download the program.

2. After downloading, locate the file SophosInstall.exe in the Downloads folder.

3. Install by double-clicking on the file.

4. If it prompts "Do you want to allow this app to make changes on your device?" please click Yes.

5. Next, it will display the Terms and Conditions page. Click the Install button to begin.

Screenshot of Terms by Sophos Home

6. Run the installation with the default settings. Please note that an internet connection is required in order to download important updates.

7. After finishing the installation, you must login to the dashboard. If you already have a Sophos account, please login. Otherwise, please enter your details and click on the Create Account button.

8. Once you are in the Sophos Home console, click the Scan button to start checking the computer for Trojan:JS/Cryxos components.

Screenshot of Sophos Home

9. Scanning may take a while; please wait for this process to finish.

10. After scanning the computer, Sophos Home will start cleaning or deleting files infected with Trojan:JS/Cryxos.

11. You may now close Sophos Home. The computer is now free from Trojan:JS/Cryxos, as well as associated malware and viruses.

After executing the above instructions, Trojan:JS/Cryxos 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.

Another alternative for Windows 10/11 users is to scan the computer with Microsoft Defender Offline. This will run a virus scan in the recovery environment.

Step 4 : 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 Trojan:JS/Cryxos. For Windows 10/11 users, please run Windows Security.

Windows 10 / 11 Instructions:

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

1. Tap or click the Search charm and search for Windows Security

2. Click Open to run the program.

Screenshot of Win 11 Search

3. On the Dashboard, click Virus and threat protection from the sidebar.

Screenshot of Win 11 Virus Protection

4. On the right panel, click on Scan Options to see different levels of checking the computer.

5. Next, please select Full Scan button.

Screenshot of Full Scan Win 11

6. Lastly, click on the Scan now button to start scanning for the presence of Trojan:JS/Cryxos. The process may take a while to complete.

7. After the scan, Delete/Quarantine identified threats, whether they were relevant to Trojan:JS/Cryxos or not. You may now restart Windows to complete the virus removal process.

For Windows 8.1 and Windows 7, you can scan the computer for free with the Microsoft Malicious Software Removal Tool (MSRT 64-Bit). It is a stand-alone virus scanner tool that targets prevalent malware groups.

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