Did anyone else see anything with regards to this thread? Regards Darren Smith ----- Original Message ----- From: "Darren Smith" <data@barrysworld.com> To: "Robert Blayzor" <rblayzor@inoc.net>; "North American Network Operators Group" <nanog@merit.edu> Sent: Saturday, August 23, 2003 1:22 PM Subject: Re: W32/Sobig-F - Halflife correlation ???
Hi
Just a quick look at my syslog file, where MOO is the name of my ACL.
fgrep MOO /var/log/cisco/<router>.log | grep 27015 -c 2383
fgrep MOO /var/log/cisco/<router>.log | grep 27016 -c 459
fgrep MOO /var/log/cisco/<router>.log | grep 27017 -c 210
fgrep MOO /var/log/cisco/<router>.log | grep 27018 -c 59
As you can see most of them were on 27015, these logs were from just one of my transit interfaces.
Best Regards
Darren Smith
----- Original Message ----- From: "Robert Blayzor" <rblayzor@inoc.net> To: "North American Network Operators Group" <nanog@merit.edu> Sent: Saturday, August 23, 2003 1:05 PM Subject: Re: W32/Sobig-F - Halflife correlation ???
On 8/23/03 7:17 AM, "Darren Smith" <data@barrysworld.com> wrote:
They were trying to hit servers in multiple subnets, all on ports 270XX.
I'm not sure on this. Lots of gaming servers use the 270XX UDP range. Quake3, HL, etc.
It may be possible it's just probing for other HL servers running on different ports. A lot of these games also use the same gaming engine for the network and graphics abilities, so it's possible HL may not be the
"game server" in the mix, it may be any game that uses the HL engine. I know there are several out there, Counterstrike being one of them.
So if it's not looking for a HL only exploit, I'd bet it's trying to get
only the
infected machines to link up and communicate via the network of gaming servers. This could be very bad because there could be virtually no way to stop this other than taking down the "Game Spy" type networks so the computers can't find each other.
-- Robert Blayzor, BOFH INOC, LLC rblayzor@inoc.net PGP: http://www.inoc.net/~dev/ Key fingerprint = A445 7D1E 3D4F A4EF 6875 21BB 1BAA 10FE 5748 CFE9
"Oh my God, Space Aliens!! Don't eat me, I have a wife and kids! Eat them!" -- Homer J. Simpson