RE: Full analysis of the .ida "Code Red" worm.

[Eric Chien]

At 06:55 PM 7/19/2001 -0700, you wrote:
>This whole worm process that we have been going through will basically start
>from scratch and run its course again when the 1st of next month comes
>around.


That is sort of true.  What happens is on the 20th, the threads that were 
trying to attack new hosts move to performing the DoS.  All of those 
threads on the 28th move into an infinite sleep.  Thus, if you are infected 
your infection goes dormant.

So, in the 'ideal' world, the worm goes dormant on the 1st.  But if a 
single new infection anywhere in the world happens again on the 1st, then 
everyone (unpatched) is up for infection again.

And of course that can happen if anyone has their date set wrong.

...Eric