Posted 18 January 2012 - 11:35 AM
After six weeks of trying, my AV provider's 2nd level support has simply given backup key data files and restore to an earlier date, or wipe the drive and reinstall window, as their answer. They have not run any special tools other than their own rootkit detector, malwarebytes and GMER. GMER actually found the reparse point that the rootkit hid its software in. Reading some BleepingComputer forum topics makes me hopeful that there is a working solution. I would like avoid having to reinstall all the apps on my computer if possible.
My System: Windows XP SP2 (some apps I use for audio editing and mixing break with SP3 - I eventually have to find what to do about this)
Protection: Avira AntiVir Premium, MalwareBytes, FIOS Router Firewall, Windows Firewall.
Other Resources: SysInternals, Hiren's Boot CD, BartPE CD, bay for SATA removable drive, uninfected computer with internet access.
AV S/W on my thumb drive ready to use if needed: GMER, RKILL (and aliases), TDSSKiller (I have used only GMER to date - as advised by Avira support.)
Infection History: First symptoms on Dec 2 2011. I am using a music notation editor when the computer slows to a crawl. Open Windows Task Manager. ping.exe is hogging resourses. Try a number of times but whenever I kill it, it restarts. Shortly after, Avira finds that netbt.sys has been infected and removes the file. I go to another computer and download a copy of the driver from Microsoft website and copy it to %WINDIR$\System32\drivers folder. Internet won't start. I try to reset the winsock catalog and restart the service - no go.
Shortly afterwards, Avira message saying a SysInfo file is infected. Removes it. I try to run a scan with Avira, which is terminated after a few seconds.
After this, I boot into safe mode (I have used only safe mode ever since that day - please advise if I am to run any tools in normal mode, thx)
Avira support, then 2nd level support tries various approaches. Eventually (in safe mode) GMER finds %WINDIR%\$NtUninstallKB15451$ and I can see (but not access) files under it. It is a reparse point. Same GMER scan flags several registry keys. I have not touched the registry, but know how to use regedit and DOS tools if needed.