Web Virus Count is a CGI in Perl that counts the number of requests generated by viruses on a Web server log file. You can use it on a proxy (such as Squid) log file to find infected computers on your LAN. It detects Code RED I and II, and Nimda.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.