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trojan.tdss


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#1 clavicorn

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Posted 14 July 2009 - 01:33 PM

I have run Malwarebyte's Anti-Malware which identifies trojan.tdss and files \windows\system32\gey*.dll. However, it is unable to remove it: after rebooting the malware is still there. I have run combofix as well to no avail. What next?

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#2 quietman7

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Posted 14 July 2009 - 02:01 PM

Please note the message text in blue at the top of this forum.

You should not be using Combofix unless instructed to do so by a Malware Removal Expert who can interpret the logs. It is a powerful tool intended by its creator to be "used under the guidance and supervision of an expert", NOT for private use. Combofix was never meant to be used as a general purpose malware scanner like SuperAntispyware or Malwarebytes' Anti-Malware. Using this tool incorrectly could lead to disastrous problems with your operating system such as preventing it from ever starting again. Please read Combofix's Disclaimer. That's the decision by the creator and we will abide by that decision.

Please download and scan with Dr.Web CureIt - alternate download link.
Follow these instructions for performing a scan in "safe mode".
If you cannot boot into safe mode, then perform your scan in normal mode. Be aware, this scan could take a long time to complete.
-- Post the log in your next reply. If you can't find the log, try to write down what was detected/removed before exiting Dr.WebCureIt so you can provide that information.

Rescan again with Malwarebytes Anti-Malware (Quick Scan) in normal mode and check all items found for removal. Don't forgot to check for database definition updates through the program's interface (preferable method) before scanning and to reboot afterwards. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. When done, click the Logs tab and copy/paste the contents of the new report in your next reply.

NOTE: Malwarebytes Anti-Malware has been updated to v1.39. Please download and install the most current version from here if using an older version.
You may have to reboot after updating in order to overwrite any "in use" protection module files.
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#3 clavicorn

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Posted 14 July 2009 - 02:53 PM

Alas, Dr. Web CureIt crashes in both safe and normal modes with

7j3wg.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

Here is the Malwarebytes' Anti-Malware 1.39 log. The file it tried to removed doesn't get removed. Curiously, the file does not show up in Windows explorer (proper View settings made).

Malwarebytes' Anti-Malware 1.39
Database version: 2429
Windows 5.1.2600 Service Pack 3

7/14/2009 12:44:10 PM
mbam-log-2009-07-14 (12-44-10).txt

Scan type: Quick Scan
Objects scanned: 94433
Time elapsed: 6 minute(s), 1 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 1
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
\\?\globalroot\systemroot\SYSTEM32\geyekrbwukcaqw.dll (Trojan.TDSS) -> Delete on reboot.

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
\\?\globalroot\systemroot\SYSTEM32\geyekrbwukcaqw.dll (Trojan.TDSS) -> Quarantined and deleted successfully.

#4 hardness

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Posted 14 July 2009 - 09:33 PM

I too have a similar problem. I run Malwarebytes 1.39 and it come's up with a similar log. After selecting remove, then followed by restarting I perform a scan and the same files are found. I am still unsure what to do... Some help would be gratefully appreciated.

#5 quietman7

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Posted 15 July 2009 - 07:38 AM

Welcome to BC hardness

If you have an issue or problem you would like to discuss, please start your own topic. Doing that will help to avoid the confusion that often occurs when trying to help two or more members at the same time in the same thread. Even if your problem is similar to the original poster's problem, the solution could be different based on the kind of hardware, software, system requirements, etc. you are using and the presence of other malware. Further, posting for assistance in someone else's topic is not considered proper forum etiquette.

Thanks for your cooperation.
The BC Staff

---------------------------------------------
clavicorn

Please download RootRepeal.zip and save it to your Desktop.
alternate download link 1
  • Unzip the file on your Desktop or create a new folder on the hard drive called RootRepeal (C:\RootRepeal) and extract it there.
    (click here if you're not sure how to do this. Vista users refer to these instructions.)
  • Disconnect from the Internet as your system will be unprotected while using this tool.
  • Close all programs and temporarily disable your anti-virus, Firewall and any anti-malware real-time protection before performing a scan.
  • Click this link to see a list of such programs and how to disable them.
  • Open the RootRepeal folder and double-click on RootRepeal.exe to launch it. If using Vista, right-click and Run as Administrator...
  • When the program opens, click the Report tab at the bottom, then click the Scan button.
  • In the Select Scan, dialog What do you want to include in the scan?, check all the boxes.
    Posted Image
  • Click OK.
  • In the Select Drives, dialog Please select drives to scan: select all drives showing, then click OK.
  • The scan can take some time to finish. Do not use the computer while the scan is running.
  • When the scan has completed, a list of files will be generated in the RootRepeal window.
  • Click on the Save Report button and save it as rootrepeal.txt to your desktop or the same location where you ran the tool from.
  • Open rootrepeal.txt in Notepad and copy/paste its contents in your next reply.
  • Exit RootRepeal and be sure to re-enable your anti-virus, Firewall and any other security programs you had disabled.
Note: If RootRepeal cannot complete a scan and results in a crash report, try repeating the scan in "Safe Mode".
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#6 clavicorn

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Posted 15 July 2009 - 01:25 PM

When I run RootRepeal, it complains "Could not read the boot sector. Try adjusting the Disk Access Level..." The Disk Access Level is at the highest. I get several of these, and then "Could not find module file on disk!" Details yield "Warning - could not read Windows kernel using raw-disk reading!" A scan leads to more error messages of the same variety, and "Attempt to read from address 0x0000000d."

Edited by clavicorn, 15 July 2009 - 01:41 PM.


#7 quietman7

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Posted 15 July 2009 - 01:53 PM

IMPORTANT NOTE: One or more of the identified infections is related to a nasty variant of the TDSSSERV rootkit component.Rootkits, backdoor Trojans, Botnets, and IRCBots are very dangerous because they compromise system integrity by making changes that allow it to by used by the attacker for malicious purposes. Rootkits are used by Trojans to conceal its presence (hide from view) in order to prevent detection of an attacker's software and make removal more difficult. Many rootkits can hook into the Windows 32-bit kernel, and patch several APIs to hide new registry keys and files they install. They can disable your anti-virus and security tools to prevent detection and removal. Remote attackers use backdoors as a means of accessing and taking control of a computer that bypasses security mechanisms. This type of exploit allows them to steal sensitive information like passwords, personal and financial data which is send back to the hacker. To learn more about these types of infections, you can refer to:If your computer was used for online banking, has credit card information or other sensitive data on it, you should disconnect from the Internet until your system is fully cleaned. All passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised and change each password using a clean computer, not the infected one. If not, an attacker may get the new passwords and transaction information. If using a router, you need to reset it with a strong logon/password so the malware cannot gain control before connect again. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read:Although the infection has been identified and may be removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume the computer is secure even if the malware appears to have been removed. In some instances an infection may have caused so much damage to your system that it cannot be completely cleaned or repaired so you can never be sure that you have completely removed a rootkit. The malware may leave so many remnants behind that security tools cannot find them. Tools that claim to be able to remove rootkits cannot guarantee that all traces of it will be removed. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Please read:Should you decide not to follow that advice, we will do our best to help clean the computer of any infections but we cannot guarantee it to be trustworthy or that the removal will be successful. Some infections are difficult to remove completely because of their morphing characteristics which allows the malware to regenerate itself. Sometimes there is another hidden piece of malware which has not been detected by your security tools that protects malicious files and registry keys (which have been detected) so they cannot be permanently deleted. Disinfection will probably require the use of more powerful tools than we recommend in this forum. Before that can be done you will need you to create and post a DDS/HijackThis log for further investigation.

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log". If you cannot complete a step, then skip it and continue with the next. In Step 6 there are instructions for downloading and running DDS which will create a Pseudo HJT Report as part of its log.

When you have done that, post your log in the HijackThis Logs and Malware Removal forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

Please be patient. It may take a while to get a response because the HJT Team members are very busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT "bump" your post or make another reply until it has been responded to by a member of the HJT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another HJT Team member is already assisting you and not open the thread to respond.
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