VirusTotal

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VirusTotal is a website created by the Spanish security company Hispasec Sistemas. Launched in June 2004, it was acquired by Google Inc. in September 2012. [2] [3]
VirusTotal aggregates many antivirus products and online scan engines [4] [5] to check for viruses that the user’s own antivirus may have missed, or to verify against any false positives . [6] Files up to 256 MB can be uploaded to the website or sent via email. [7] Anti-virus software vendors can receive copies of files that have been scans but passed by their own engine, to help improve their software and, by extension, VirusTotal’s own capability. Users can also scan suspicious URLs and search through the VirusTotal dataset. VirusTotal for dynamic analysis of malware Cuckoo sandbox . [8]VirusTotal was selected by PC World as one of the best 100 products of 2007. [9]
VTUploader [10] is an application that integrates into the Explorer’s (right-click) contextual menu, listed under Send To> Total Virus . The application also makes it easy for submitting a URL or a program that is currently running in the OS.
VirusTotal stores the name and various hashes for each scanned file. Already scanned files can be identified by their known (eg, VT default) SHA256 hash without uploading complete files. The SHA256 query URL has the form https://www.virustotal.com/latest-scan/SHA256
. File uploads are normally limited to 128 MB. [11]
There are several browser extensions available, such as VTzilla for Mozilla Firefox , VTchromizer for Google Chrome and VTexplorer for Internet Explorer . They allow the user to download files directly from the VirusTotal’s web application, and to scan the URLs. [12]
The service also offers an Android App [13] that employs the public API to search any installed application for VirusTotal’s previously scanned ones and its statuses. Any application not previously scanned may be submitted, but an API key must be provided and other restrictions to the public API may apply (see #Public API ).
VirusTotal provides as a free service to the public API that allows for the automation of some of its online features such as “upload and scan files, submit and scan URLs, access to advanced scan reports, and make automatic comments on URLs and samples” . Some restrictions apply to requests made by the public API, such as requiring an individual API key, a simple priority, a low priority scan queue, a limited number of requests per time frame, and so on. [14]
Antivirus engines used for detection for uploading files. [15]
Antivirus scanning engines used for URL scanning. [15]
Files uploaded to VirusTotal may be shared freely with anti-malware companies and will also be retained in a store. The VirusTotal ‘About Page’ states under VirusTotal and confidentiality :
Files and URLs sent to the Internet will be shared with antivirus vendors and security companies. We do this because we believe it will eventually lead to safer Internet and better end-user protection. By default any file / URL submitted to VirusTotal which is detected by one of the scanners that do not detect the resource. Additionally, all files and URLs can be accessed by premiums (mainly security / antimalware companies / organizations) VirusTotal users.