Had a customers computer here today running XP SP3 that lost there internet connection,, would not “Acquire AN IP Address”. Ran the usual scans with Spybot, Malwarebytes, Avast, and few others. All together about 100 infections remove. Rescanned nothing else found.
Ran XP Winsock Fix few times, which usually fixes XP’s connections settings due to virus/spyware corruption, damage,, but rebooted and still no internet connection.
Also XP theme was set to Classic, Administrative Tools/Services/Themes was set to automatic,, restarted the Theme service, and was able to set the XP theme back in display properties fine. But on every reboot xp theme would set itself back to classic. Restarted “Theme” service again, back to normal. Every boot up would set itself back to classic…………….
DHCP service (neede for internet connection WAS set to “Automatic” in Services. When I manually restarted the DHCP service, internet connection was re-established fine………………… BUT once again, on every reboot I had no connection unless I manually restarted the “DHCP” service. DHCP service WAS not auto starting itself for some reason. But knew something still was not right, for when I did manually restart these services and had an internet connection,, Internet Explore 8 search pages kept changing on me also.
Found a post elsewhere with the same exact problem,, DHCP and XP Theme service not starting up correctly, where this rootkit remover by Kaspersky fixed it up.
** Rootkit.Win32.TDSS **
Ran the tool above and it found one rootkit buried down deep, removed and rebooted. XP Theme problem was fixed, AND Internet was back to normal, no problem. Rebooted a few times,,, all good ta go! Did not have to manually restart these 2 services. Thanks Kaspersky for the fix!
Full Article and Info from Kaspersky’s TDSSKiller Tool below:
How to remove malware belonging to the family Rootkit.Win32.TDSS
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