CheckVT sends the selected URL through a parsing process, then to VirusTotal to check if it has been analyzed for malware.
checkVT Extension
checkVT is a simple web browser extension that takes a selected URL via context-menu and submits it directly to be checked against all engines on VirusTotal with an added feature. VirusTotal is a free service that uses over 70 antivirus scanners and URL/domain blacklisting services to analyze suspicious files and URLs to detect types of malware. The feature checkVT incorporates is a process that tries to find the effective URL (redirect) if it exists on the URL that was submitted, and sends that URL to VirusTotal instead of the URL that was selected. This extra step helps users see the VirusTotal results for the URL/domain that they would have ended up at, as opposed to the original link they clicked on. URL redirection is a major phishing method that attackers use to masquerade as legitimate websites.
For more info and to see the open source code, please visit the GitHub repo: https://github.com/ealmonte32/checkVT
====================
Release notes:
Version 2.3:
- Minor JavaScript linting fixes
- Minor improvements to reduce lines of code
- Minor URL encoding fixes
- Popup localhost line fix
Version 2.0.0:
- URLs are now submitted in full form of 'scheme' (http/https) + 'host' + 'path'
- URLs being submitted in full rather than 'scheme' + 'host' being checked for previous analyzation provides a greater form of protection by returning a wider range of results
- Unlike previous versions where it just said \"Item-Not-Found\" for URLs that had not been analyzed, your never-before submitted URL is now automatically sent to be analyzed
Version 1.0.4:
- Added checkVT URL search field directly onto add-on/extension popup for quick access
- Improved URL cleaning of whitespace
- New logo
Version 1.0.3:
- Initial public release
- Improved URL decoding
- Added google search result filtering to send the \"url=\" and not \"google.com\"
- Improved detection of a link or a text-based URL when both were selected
Version 1.0.0-1.0.2:
- Initial beta release
- Added option for curl to respect GET requests when following 301, 302, and 303 redirections
- Added HTTP user agent header to processing because some servers act different if the user agent is not supplied
- Added all encoding option to send gzip, deflate, etc on request
- Added parsing of URL scheme
Source Manifest.json
How to download and manually install checkVT extension for Chrome
Looking for a way to install checkVT extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.
However, you may need to install checkVT extensions manually, this article outlines two simple methods to effortlessly install checkVT extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.
Method 1: Download checkVT extension and manually install through Drag &Drop
If you ever need to manually install a checkVT extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.
Step 1: Download the checkVT Extension by clicking the "Download CRX" button on the website.
Look for the checkVT extension you wish to install. Go to the website and download the checkVT extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for checkVT extension that contains all the data.
Step 2: Extract &Arrange Files
Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.
Step 3: Go to the Chrome Extensions Page
Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.
Step 4: Drag and Drop the Extension
Now, go to the folder where you extracted the checkVT extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.
Step 5: Complete the Installation
Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.
Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.
Method 2: Download checkVT extension for Chrome and install in Developer Mode
This is another method to install checkVT extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.
Step 1: Download the checkVT extension file
Select and download the checkVT extension by clicking the 'Download CRX' button on the website.
Step 2: Extract the downloaded contents
Convert the file to a ZIP file if it is in CRX format then extract the checkVT extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your checkVT extension running.
Step 3: Open Chrome Extension Setting Page
In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.
Step 4: Enable Developer Mode
After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.
Step 5: Load the Unpacked Extension
Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."
Step 6: Select the Extension Folder
Once the pop-up opens upon clicking Load unpacked, select the checkVT extension directory and click on the "Select Folder "button.
Step 7: Confirm and Install
After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.
Conclusion
Here we've made a step-by-step guide on How to manually install checkVT extension in 2 ways. We hope this guide proves helpful.
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