After cleaning it you should be sure that it will not happen again, and the better way is to know how it happened this time. So you need to do a little forensic analysis to avoid have the same problem in the future or in other servers now. After cleaning you can monitor the system with sniffers, explore the system to search things that shouldn't be there, monitor the filesystem, etc... to be shure is really clean. If you have other systems to compare, will be great, or if you know what is exactly what must be in the server. The list of things you should do in this case, in my opinion, is too large to be explained in an email. This book will be very helpful: http://www.amazon.com/gp/product/0321200985/sr=8-2/qid=1149607087/ref=sr_1_2/104-4503193-3407931?%5Fencoding=UTF8
El lun, 05-06-2006 a las 14:27 -0500, Patrick Beam escribió: > Came in this morning to find a windows 2003 server I manage scanning the > Internet for machines listening on tcp 139 and 445. While looking at the > machine I noticed the following processes running. > > > > > Mwvsta.exe found in c:\windows\system32 > > rundll16.exe c:\windows\system23 > > Ponoas.exe c:\windows\system32 > > > > I believe that the ponoas.exe is some sort of rootkit although searching on > google for this file name returns nothing. Also searching > mwvsta.exereturns nothing. At this point I have removed these files > from the system > and registry but am weary that the server will get hit again. Has anyone > had an experience with the following file or have any idea what rookkit of > virus they are associated with? > > > > Thanks, > > > > Patrick > > ------------------------------------------------------------------------------ > 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 > ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------
