RE: local codered infection

[Chip Kelly <Chip.Kelly () sas com>]

alert tcp $INTERNAL_NET any -> $HTTP_SERVERS 80 (msg:"Local rule: CodeRed v2 root.exe access"; flags: A+; 
uricontent:"scripts/root.exe?"; nocase; classtype:web-application-attack; sid: 1000000; rev:1;)

The only difference between your rule and the one for CodeRed V2 located in WEB-IIS.rules appears to be "content:" 
versus "uricontent:" -chip

-----Original Message-----
From: bthaler () webstream net [mailto:bthaler () webstream net]
Sent: Wednesday, February 06, 2002 1:28 PM
To: snort-users () lists sourceforge net
Subject: [Snort-users] local codered infection


Is anyone using a snort rule to detect *local* infections of codered, nimda,
etc?

I tried:
alert tcp x.x.x.x any -> any 80 (msg:"***LOCAL CODERED INFECTION***";
content:"/cmd.exe"; nocase;)

but this doesn't seem to work.

I tested it by trying to access www.yahoo.com/cmd.exe, which should throw a
false positive.

Is my testing flawed, or the rule, or both?





Sincerely,

Brad T.


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