Thanks for the suggestion. My hosts file only contained one single entry, that was:
"::1 localhost".
Nevertheless I removed it, but no change.
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DNS resolution lost in all browsers after Malware removal (Windows Vista)
Hello everybody,
since a few days I have a really strange problem with my Desktop computer.
I had some kind of Browser Hijacking going on. Every time I clicked a link in a webpage I got redirected to some porn/spam/whatever site.
I noticed that I (shame on me) had forgotten to install a antivirus tool. So I got Adaware and first tried to remove the malware that obviously was there. It took the whole night, but at the morning it told me it had removed some severe malware.
Since then, me System seems stable, fast, and appears to have no problems, except I can't access any website anymore. As soon as I start Firefox or Internet Explorer it either crashes right away, or it says that it can't connect to the server. Opera never crashes, but can't retrieve any website either.
The interesting thing is: I can ping www.google.com, take the ip address, put it in a browser url field (when it hasn't crashed so far) and there it is! The google website appears. So from my point of view, it could have something to do with dns resolution. But on the other hand, then the ping wouldn't resolve the domain name to the address. When I enter a local web server's IP address, it also works.
Things I've tried so far:
- lspfix
- netsh int ip reset
- netsh winsock reset catalogue
- installed Internet Explorer 8
- reinstalled network card
I don't know what to do at the moment, so if anybody has an idea, I would be very very grateful :)
Thank you in advance,
Oliver
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Answers
Could you run autoruns (dont make any changes within autoruns)
Autoruns http://technet.microsoft.c
Within Autoruns,select the file tab and select save(Ctrl+S)
Upload that file(autoruns.arn) to http://www.ee-stuff.com/Ex
Please download and install MalwareBytes (www.malwarebytes.org) and when you dwonload the file, rename the file before saving.
Then, once installed, update, and run a scan. You may still have something lurking.
Here is the link to my Autoruns.arn file:
http://www.ee-stuff.com/Ex
Theres some entries+traces left but not to sure on them.
Run these scanners:
Malwarebytes http://www.malwarebytes.or
Offline definations(not daily) http://www.malwarebytes.or
Superantispyware http://www.superantispywar
Offline definations http://www.superantispywar
http://www.surfright.nl/en
I ran malwarebytes' full scan over night, but it was interrupted by windows update (which seems to have worked). So I started a quick scan this morning and I still got many alerts. Malwarebytes said it fixed all of them. Then I retried netsh "winsock reset catalog". It still didn't work. As the lsp-explorer addon for adaware seems to be unavailable for the current adaware release, I started lspfix to take a look at the lsps registered. There is only one dll left in the left list, it's mswsock.dll. Are the files winrnr.dll and rsvpsp.dll not necessary anymore in windows vista or has netsh missed some steps when rebuilding winsock's registry entries? Can I manually reregister missing LSPs?
Btw, now when I start a browser it doesn't crash anymore since I have run malwarebytes and cleaned the found entries.
Okay, thank you.
So far I've only completed Malwarebytes' Quickscan. Superantispyware is running currently. When this is done I'll retry the full scan from malwarebytes again, as Windows Update seems to have rebooted the machine this night before malwarebytes was done scanning (as there was no report of the scan).
So far Superantispyware found Trojan Agent/Gen-FakeAlert and some tracking cookies. I'll let you know when the scanners are done..
Quick update:
As it seems, malwarebytes wasn't able to remove the things it found. The full scan found the same trojans again it had told me it had removed after the quick scan. It says it will be deleted after the next startup, but it was still/again there. I started to scan again and canceled after the first findings. It again told me it would delete it after the next successful boot. This time I started in Vista safe mode and ran the test again, now it seems to really have deleted it, but not sure yet. I'll run through the full scan reboot again into saffe mode and try another scan. Maybe it helps.
1) Download & run CCleaner to clean your system (including registry) from junk files/registry keys
http://www.ccleaner.com/do
2) Download & run GMER (rootkit scanner) from (http://www2.gmer.net/gmer
Start GMER, select all options on the right side, after scanning is finished, click on save. Attach the log file here
3) Download & run Hijackthis
http://www.bleepingcompute
How to use Hijackthis
http://www.bleepingcompute
Hey all,
I downloaded and ran ccleaner and gmer. CCleaner found some things and repaired them. GMER found nothing except the registry entries created by the sptd-driver. Still no luck. I then found out that my host-file was gone in the mean time, together with the whole etc-directory. As I tried to create it I got an error. I then opened a commandline and ran "md etc" in the drivers-directory and suddenly the-etc-directory with my host-file reappeared.
As a consequence of more and more strange things happening I finally decided to completely reinstall the whole system. I greatly appreciate all of your help, but I need the PC for working purposes and can't afford putting any further efforts into this.
Sadly enough I couldn't check the dns service anymore, as I saw this too late.
Thank you all for your help!
Oliver
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by: MikeHolcombPosted on 2009-11-03 at 11:34:58ID: 25732603
I would suggest first examining your HOSTS file (c:\windows\systems32\driv