Security Incidents mailing list archives
Re: [logs] nimda web server logs
From: "Jay D. Dyson" <jdyson () treachery net>
Date: Tue, 11 Jun 2002 17:07:18 -0700 (PDT)
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, 11 Jun 2002, Sweth Chandramouli wrote:
Here's what I'm seeing -- anyone have any information on this variant? /msadc/..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir+c:\\*.cif/s/b /a.asp/..%c1%1c../..%c1%1c../winnt/repair/sam /a.asp/..%c1%9c../..%c1%9c../winnt/repair/sam This is definitely not Nimda, although it attempts to exploit the same directory traversal vulnerability in IIS as NimdaPerhaps this should be thrown over to the incidents list?
I concur. Incidents folks, here's a summary of the present discussion from the Log Analysis list. 1. Tina Bird requested a list of Nimda variant attack strings (which I provided). Upon review, she determined that the style of attacks she was seeing (enumerated at the top of this message) were not among the known Nimda variants. 2. Michael Katz made the observation that the directory traversal technique is the same as Nimda, though the attacks don't appear as a Nimda variant. Mr. Katz further suggested that the attacks may have been manually executed. 3. Sweth Chandramouli commented on the '.cif' request thus: "This is the one that scares me; it's attempting to run a recursive directory search on your C drive to find your Internet Explorer component information file--the file that, for example, Windows Update uses to determine what patches you have installed. Presumably, if that request succeeded, it would then download the CIF to find out what version of IE you have, etc., and try only those exploits of relevance." 4. Both Sweth and myself noted that the traversal to /winnt/ repair/sam had some large ramifications if the file access attempt wasn't hung up with some sort of Microsoft access sharing violation. (The attacker would basically have a load of goodies to feed l0phtcrack.) Anyone else seeing this pop up in their logs? Any honeypots collecting data of this sort? It's a new one on me. - -Jay ( ( _______ )) )) .--"There's always time for a good cup of coffee"--. >====<--. C|~~|C|~~| (>------ Jay D. Dyson -- jdyson () treachery net ------<) | = |-' `--' `--' `-- I'll be diplomatic...when I run out of ammo. --' `------' -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (TreacherOS) Comment: See http://www.treachery.net/~jdyson/ for current keys. iD8DBQE9BpC5GI2IHblM+8ERAukTAJ4yysPYcDmnBzSkMvMA8+w+PaoGtACfetJk hE4GalTiNp/d0VcmfOhyUqE= =oCYX -----END PGP SIGNATURE----- ---------------------------------------------------------------------------- This list is provided by the SecurityFocus ARIS analyzer service. For more information on this free incident handling, management and tracking system please see: http://aris.securityfocus.com
Current thread:
- Re: [logs] nimda web server logs Jay D. Dyson (Jun 12)
- Re: [logs] nimda web server logs Lewis E. Wolfgang (Jun 13)
- Re: [logs] nimda web server logs quentyn (Jun 13)
- <Possible follow-ups>
- RE: [logs] nimda web server logs Baklarz, Ron (Jun 13)