Re: Worm probes

[Chris Grout <cgrout () chrisgrout com>]

Appears that if it gets a 404 back from its intial unicode scans, it just 
keeps looking elsewhere.  If the server responds with anything other than a 
404 (such as a 403 IP Rejected, in this case...)  It attempts to get the 
server to tftp a file named "admin.dll" from the scanning system.

I pulled the admin.dll from an infected box and to my non-programming eyes, 
it appears to do at least the following (in no order):

1.  Adds the guest account to the local Administrators group and then 
activates the account
2.  Use the anonymous
3.  Makes sure c$ is shared
4.  Tries to mail a bunch of files.  HELO it uses is aabbcc.  <***  Might 
be able to use this for a quick and dirty IDS Sig***>
5.  Looks like admin.dll ends up in "c", "d" and "e".
6.  creates a file named readme.exe which is actually a wav file (weird?)

I could be totally wrong here (and probably am) but oh well...

Chris