Security Incidents mailing list archives
Re: snort signature for new CodeRed varient
From: "David Brown" <dbrown () echoice com au>
Date: Sun, 5 Aug 2001 17:00:35 +1000
Joe, Just tried the Snort sig (1.7) and it did'nt pick up the latest CodeRedII scan ?Snort reported it as IDS552 and the packet dump was a CodeRedII packet. Here is the snort rule agn: alert tcp any any -> any 80 (msg: "CodeRedII Overflow"; flags: A+; content: "|46309a02 0000e80a 0000 0043 6f646552 65644949 008b1c24 ff55d866 0bc00f95|"; depth:624;) Any ideas what I've done wrong ?? Rgds, Dave ----- Original Message ----- From: "J Moll" <jmoll-lists () my-mbox com> To: <incidents () securityfocus com> Sent: Sunday, August 05, 2001 4:21 PM Subject: snort signature for new CodeRed varient
All: I'm using this Snort signature to distinguish between the original and
recent
varient of CodeRed. I'm sure it can be optimized -- grabbed a bit of the binary around the text "CodeRedII" in the packet to cut down on false alarms.. putting it out so folks can log the differences. alert tcp any any -> any 80 (msg: "CodeRedII Overflow"; flags: A+;
content:
"|46309a02 0000e80a 00000043 6f646552 65644949 008b1c24 ff55d866 0bc00f95|"; depth:624;) Best Regards, Joe Moll -- Joseph L. Moll, CISSP -- jmoll () autoproxy com --------------------------------------------------------------------------
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Current thread:
- snort signature for new CodeRed varient J Moll (Aug 04)
- Re: snort signature for new CodeRed varient David Brown (Aug 05)
- Re: snort signature for new CodeRed varient Joe Moll (Aug 05)
- Re: snort signature for new CodeRed varient David Brown (Aug 05)