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Infected with Backdoor.Tdss.565 - How far is too far in removal?


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#1 In5ignia

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Posted 15 May 2010 - 02:55 PM

So....
I've been infected with Backdoor.tdss.565 and I've read all the gloomy news about polymorphic trojans and how it is categorically impossible to remove them completely.
I use my computer for online banking so a complete reformat seems the only option for me. (unless these really can be completely removed)
I've read these reccomendations about backing up my files before i do:

From geekstogo.com - i think

This infection can and will infect all the machine's executable files, document files, and media files. Malware experts say that only a complete reformat and reinstall is the only way to clean the infection.

DO NOT back up ANY files containing these extentions:
.exe, .bat, .scr, .rar, .zip, .htm, .html, .mp3, .wma, .ogg, .mp4, .jpg, .gif, .doc, .xls, .ppt.
Anything that is an executable, document, or media file can and probably is infected.
//Doesn't leave much does it??

In addition:
Close all your bank accounts and open new ones and alert your bank that you may be a victim of identity theft
Change all your passwords on every website you use from another computer
Perform a factory reset on your router [if you have one]
Check all networked computers for infection, if infection is found, reformat them using the guidelines above.


So two questions:
-Really? ALL my documents and music are infected?? I can't back up anything?? This sounds too extreme to me. i can believe executable files and some documents but everything?
-I have an HP Pavilion with a recovery partition, anyone who knows this feature knows that the computer lets no one and nothing change this data. So would a factory restore do the trick or do i need to go out and buy a non-OEM copy of windows to reinstall? Is this virus really powerful enough to infect this partition?

Any help is appreciated, thank you.

Edited by In5ignia, 15 May 2010 - 02:56 PM.


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#2 boopme

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Posted 15 May 2010 - 10:50 PM

Hello, Most dovs, photos and music are OK. As long as they weren't dpwnloaded off a file sharer.

I use this reformat advice.

In some instances an infection may have caused so much damage to your system that it cannot be completely cleaned or repaired. Wiping your drive, reformatting, and performing a clean install of the OS or doing a factory restore removes everything and is the safest action but I cannot make that decision for you.

Reformatting a hard disk deletes all data. If you decide to reformat, you can back up all your important documents, data files and photos. The safest practice is not to backup any autorun.ini or .exe files because they may be infected. Some types of malware may disguise itself by adding and hiding its extension to the existing extension of files so be sure you take a close look at the full name. After reformatting, as a precaution, make sure you scan these files with your anti-virus prior to copying them back to your hard drive.

The best proceedure is a low level format. This completely wipes the drive. Then reinstall the OS.
Use the free version of Active@ KillDisk.
Or Darik's Boot And Nuke

The best sources of Information on this are
Reformatting Windows XP
Michael Stevens Tech
Windows XP: Clean Install

==============================

2 guidelines/rules when backing up

1) Backup all your important data files, pictures, music, work etc... and save it onto an external hard-drive. These files usually include .doc, .txt, .mp3, .jpg etc...
2) Do not backup any executables files or any window files. These include .exe/.scr/.htm/.html/.xml/.zip/.rar files as they may contain traces of malware. Also, .html or .htm files that are webpages should also be avoided.

Download Belarc Advisor - builds a detailed profile of your installed software and hardware, including Microsoft Hotfixes, and displays the results in your Web browser.
Run it and then print out the results, they may be handy.

Since we don't know exactly which infections we're dealing with here, we should take some precautions before we attempt to move files from the infected machine. Run the following on your clean computer, and make sure you insert your flash drives at the prompt.
Download and Run FlashDisinfector

Please download Flash_Disinfector.exe by sUBs and save it to your desktop.
  • Double-click Flash_Disinfector.exe to run it and follow any prompts that may appear.
  • The utility may ask you to insert your flash drive and/or other removable drives. Please do so and allow the utility to clean up those drives as well.
  • Hold down the Shift key when inserting the drive until Windows detects it to keep autorun.inf from executing if it is present.
  • Wait until it has finished scanning and then exit the program.
  • Reboot your computer when done.
Note: As part of its routine, Flash_Disinfector will create a hidden folder named autorun.inf in each partition and every USB drive that was plugged in when you ran it. Do not delete this folder...it will help protect your drives from future infection by keeping the autorun file from being installed on the root drive and running other malicious files.


Reinstall Windows Vista

Note: Windows 7 Professional instructions recommend you DO NOT use a third-party software to format the drive.
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