Yes, I have seen similar hacks that have come primarily from French hackers. They utilize legitimate network administration tools to "remotely administer" your network for you. GO to that box and run the fport.exe util and handle.exe, or use sysinternals tools to find the app and its stack that were used to open the port.
-joel -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Simon Smith Sent: Friday, September 28, 2007 12:59 PM To: The Security Community Cc: Full-Disclosure Subject: Re: [Full-disclosure] .NET REMOTING on port 31337 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Right, It set off alarms with all of my penetration testers hence why we're researching it. The question I have is, has anyone seen port 31337 respond with the .NET REMOTING banner? Our nmap -A claims that it is .NET REMOTING... just seems weird... Anyone know of any backdoors that do that? The Security Community wrote: > The last time I saw anything on port 31337 (ELEET) it was during a > vulnerability assessment. We shut it down and stopped the assessment. > Management wouldn't let us investigate, then blew the cover on the > assessment a week or two later. > > It's almost always bad, but you may just have an admin with a stupid > sense of humor. > > 31337 should always throw a red flag. > > On 9/28/07, Simon Smith <[EMAIL PROTECTED]> wrote: > > Has anyone ever heard of .NET REMOTING running on port 31337? If so, > have you ever seen it "legitimate"? > > >> _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/ >> - -- - - simon - ---------------------- http://www.snosoft.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin) iD8DBQFG/UDef3Elv1PhzXgRAjZZAJ4mwrJ0WyvGBUznwbrRu4+/JBd0owCdHcgr aKOuZul4pgLcu4H3Aoo1HuU= =X1Ya -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/ _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/