Hi, this is Ziv Mador again from the Microsoft Anti-Malware team. This week, the folks over at VirusTotal added the Microsoft anti-malware engine to their service...[

Welcome to the Virus.Org Malware scanning service, this service scans uploaded files with several common Anti-Virus tools to attempt to determine if the uploaded file is in fact some form of Malware.

The results of service is by no means a 100% proof positive that a file is in fact some form of Malware. Likewise if this service says a file is clean, it does not again provide a 100% proof positive that a file is not Malware. It could be that the file you have uploaded is in fact a virus that currently is undetected by the virus scanners that we use to provide the service.

Please do not ask for viruses that have been uploaded here. They are not for trade this is a legitimate service, not a Virus Trading site. Viruses uploaded here maybe be distributed to antivirus vendors. If you do not want your files to be distributed, please do not send them at all.

Virus definition are updated on an hourly basis, please refrain from uploading hex-edited or repacked variants of the same sample.

You can view the status of the scanners that are currently in use for the Virus.Org scanning service on the scanner info page. Here you will find information about the Scanner version, Scanner Engine version and Virus Signature version where available from the virus scanner.

You can also view the top 10 pieces of malware detected by each scanner all on one page here.

Yet another to add:

http://virusscan.jotti.org/