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Also entries with NNNNNNNNNNN...
Authored by: aarle on Aug 08, '01 06:47:51PM
The entries with NNNNNN instead of XXXXXXXX in them are from the original version of Code Red, which became active again on August 1.

The XXXXXXX entries are of a newer strain of the worm, which apart from using a large number of X's to force the buffer overflow in IIS (instead of N's) doesn't seem different.

As for warning infected parties about their infections: there are so many that it becomes a bit of a chore very soon.
I thought about writing a quick PHP script that parses the IP adres of the server making the request, and then sending a mail message warning of their infection to abuse@the_offending_ip_address but still haven't found the time yet.
It would be trivial to write such a simple script, name it default.ida (the file the Code Red worm tries to access on your server), put it in the server root, and change /etc/httpd/httpd.conf so that ".ida" files will be recognized as PHP files (to make sure the script actually gets executed).

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