Security Incidents mailing list archives
Worm attack on our network this morning -- anyone else see this?
From: "David Gillett" <gillettdavid () fhda edu>
Date: Wed, 13 Dec 2006 13:04:30 -0800
Late Monday afternoon, I noticed that a machine was scanning random addresses across both campuses using port 135 (DCE). I blocked the port and tracked the machine to the support area, where one of the techs was reformatting a laptop. Late Tuesday afternoon, I noticed similar traffic from another machine, and blocked that port. This morning, that second machine showed up somewhere else on campus, and similar traffic was flooding from 22 additional machines, 19 at the big campus and 3 at the other -- most appear to also be laptops. In addition to spreading via port 135, I've also seen: 1. At least one machine eventually started similar scanning on port 445 (CIFS). 2. These machines all try to "phone home" to port 7654 of a remote machine. I've got that blocked now, but one succeeded and appeared to be talking IRC over that port, reporting a "successful file download" to/from an additional machine which (so far) doesn't appear to have been trying to spread the infection further. I've got the "phone home" traffic blocked, and the known infected machines null-routed at the gateway, which *should* make it just about impossible for them to infect outside their own VLANs. The targets are all PCs, and most seem to be laptops. I'm thinking about this week's MS Office 0days, and maybe about recent wireless driver vulnerabilities, but this *could* be something older that walked in on a visiting laptop.... David Gillett ------------------------------------------------------------------------------ This List Sponsored by: Black Hat Attend the Black Hat Briefings & Training USA, July 29-August 3 in Las Vegas. World renowned security experts reveal tomorrow's threats today. Free of vendor pitches, the Briefings are designed to be pragmatic regardless of your security environment. Featuring 36 hands-on training courses and 10 conference tracks, networking opportunities with over 2,500 delegates from 40+ nations. http://www.blackhat.com ------------------------------------------------------------------------------
Current thread:
- New UDP port probed (36970) Walter C. Daugherity (Dec 09)
- Re: New UDP port probed (36970) Tim (Dec 10)
- Re: New UDP port probed (36970) killy (Dec 11)
- <Possible follow-ups>
- Re: Re: New UDP port probed (36970) w1ngz73 (Dec 11)
- Re: Re: New UDP port probed (36970) anonymous (Dec 11)
- RE: New UDP port probed (36970) McGowan, Jeremy (Dec 11)
- Re: Re: New UDP port probed (36970) rpan (Dec 12)
- Worm attack on our network this morning -- anyone else see this? David Gillett (Dec 13)