Spyware, Viruses, & Security forum

Question

How to repair a zombie computer?

by Duobyte / February 2, 2013 5:27 AM PST

Hi,
Recently I went on a site that had cloudflare on it and I got a message saying that I have to complete a captcha to enter.
I did complete it but I could not access the page I wanted. I have tried many other times and yet nothing. Then I scrolled down and read the details. This is what is said
"Your computer or another device on your network is compromised with a virus or malware. Criminals can use this malware to manipulate your device to send spam, process fraudulent transactions, or conceal other dangerous activities."
Then I checked my Ip if it is suspicious and I found that my IP has sent 16 spam messages. I belive that my computer has become a zombie and I don't know how to fix it. i looked at my Avast and realised that it hasnt been updated in a while but yet it says that I am completly safe. I tried updating the avast but it didnt progress at all.
I tried even updating to avast 2013 but it refused to start the setup. I am running out of options here and I dont want to re install the whole system again( I am using windows XP)

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All Answers

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Answer
Then Format And Reinstall Everything....Unfortunately....
by Grif Thomas Forum moderator / February 2, 2013 9:54 AM PST

...you've not told us much about your computer.. Make and model? laptop or desktop? Do you have the recovery discs? Does it have a recovery partition? The more information you give us, the better informed our answer will be.

Most newer "brand name" computers have the option to use their recovery partition to reformat the drive and reinstall the operating system and all programs back to its original state.. Checking the manufacturer's website should give you instructions on how to perform such a recovery. Using recovery discs can also do the same thing but if you don't have either, then you'll need get them...

Hope this helps and let us know more.

Grif

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Thanks for the advice
by Duobyte / February 2, 2013 5:19 PM PST

Well I have a desktop computer. I don't have a recovery particion as I don't know how to make one. I do however keep my private stuff on discs. The machine isn't any brand. It is custom made and I bought it 4 years ago.

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Then You'll Depend On The Backups YOU'VE Made..
by Grif Thomas Forum moderator / February 4, 2013 5:38 AM PST
In reply to: Thanks for the advice

On custom made computers, you should have saved the operating system installation disc, a CD with all the drivers, a disc which contains all the secondary programs you've installed on the computer, plus a disc with all your important pictures, files, music, etc...

If you don't perform all these steps, then there is still a possibility that the machine could be controlled by someone else. Malware on the machine is the primary reason you can't update your antivirus, etc....

Yes, you could follow the steps below to attempt a cleanup but the steps below are just a beginning... Once cleanup has occurred using these steps, then you'll need to run other antivirus programs, check your email, firewalls, routers, and all other devices, just to make sure you don't have any remnants of the malware remaining. It's and extremely drawn-out task and in the long run, reformatting and reinstalling everything is quicker and safer.. So....if you want to give it a try, follow these steps.

If you can download the tools listed below on the problem computer, great, but you may need to use a separate, clean computer, download the tools, copy them to a DIFFERENT flash drive or CD, then transfer them to the infected computer.
_______________

Once that's done, then restart the computer into "Safe Mode with Networking" and use the instructions below. If you can't start in Safe Mode, then run all the tools while in "normal" Windows first, then run them in Safe Mode afterward.:

After downloading or transferring it to the problem machine, run the
following tool to help allow the removal programs below to run.
(courtesy of Grinler at BleepingComputer.com)There are 3 different
versions. If one of them won't run then try to run the other one. Be
patient.... as a black window should open, then close after finding all
the background programs.Vista and Win7 users need to right click and choose Run as AdminYou only need to get one of them to run, not all of them.

Rkill.exe
http://download.bleepingcomputer.com/grinler/rkill.exe

Rkill.com
http://download.bleepingcomputer.com/grinler/rkill.com

Rkill.scr
http://download.bleepingcomputer.com/grinler/rkill.scr
_____________________

IMMEDIATELY after running the "Rkill" tool above, run/install the Malwarebytes and
SuperAntispyware installer and update files from the links below which
you've also copied to a CD or flash drive, and transfered to the problem
machine. Do NOT restart the computer after running Rkill. After that, run a full system scan
and delete anything it finds.

Malwarebytes Installer Download Link (Clicking on the links below will immediately start the download dialogue window.)
http://www.besttechie.net/tools/mbam-setup.exe

Next, install and run a full system scan with the SuperAntispyware program
and the manual updater from the links below. As before, you may need to
rename the installer file to get the program to install.:

SuperAntispyware
http://www.superantispyware.com/SuperAntispyware

Manual Update
rhttp://www.superantispyware.com/definitions.html
____________


And after that, if everything's fine by you can't connect to the internet,
then follow the procedures below to check your network "proxy" settings
again.Open Internet Explorer and go to Tools-Internet
Options-Connection Tab. Click on the LAN settings button. IF there is a
check mark next to "Use a proxy server for your LAN", uncheck it. Click
OK. Then OK, again.
__________________

And finally, download and run the tool below to bring back any files that may have been hidden by the malware on the computer.

http://www.bleepingcomputer.com/download/unhide/

Hope this helps.

Grif

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