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Cyberlot's Blog:
Funny little php "virus" floating around
February 12, 2007 @ 09:58:00

Richard Thomas comments on a "funny little PHP 'virus'" that he's noticed coming to him via emails:

Got an email that claimed to be from my host, it used a generic return address and talked about security upgrades and such and how due to new policy to help keep a secure data center I was required to upload and run 1 of 2 files in a zip attachment, the first was a php file the other was an asp file.

Of course, it wasn't from the host, so he investigated a little further to find out exactly what was going on with the file. Basically, it was a modified nsTView file with some added emailing and password discovery code. The code was "hidden" though - through a base64_encode call on one side and then decoded it on the other to cause the server to execute the code. He even posts and example of what the base64ed code might look like.

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