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lured by ComboFix


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#1 djackson

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Posted 21 August 2011 - 01:58 PM

Hello everybody. I arrived at BleepingComputers via searching other forums on what seems to be a security breach on my computer. A forum in Brazil described users with similar problems as the one I seem to be having, use of Combofix was advised.
First indication of problems on my machine came from MBAM warnings and full scans detecting and placing in quarantine something called Spyware.Banker. Other than that my computer is having some temper tantrums, most of them related to MS Update trying to make me install IE 9.

For some reason BleepingComputers seem to be the legitimate "home" of ComboFix, other forums tend to mention ComboFix a lot.

Can anyone advise me on this matter? Otherwise redirect me to the appropriate forum?

Thankyou for Your attention.

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#2 boopme

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Posted 21 August 2011 - 02:03 PM

Hello. I moved this to the Am I Infected forum from Intros.

Did you run Combo yet? If not do not.

Please post that MBAM log.
The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.


Download Security Check from HERE, and save it to your Desktop.

* Double-click SecurityCheck.exe
* Follow the onscreen instructions inside of the black box.
* A Notepad document should open automatically called checkup.txt; please post the contents of that document.



Reboot into Safe Mode with Networking
How to enter safe mode(XP/Vista)
Using the F8 Method
Restart your computer.
When the machine first starts again it will generally list some equipment that is installed in your machine, amount of memory, hard drives installed etc. At this point you should gently tap the F8 key repeatedly until you are presented with a Windows XP Advanced Options menu.
Select the option for Safe Mode with Networking using the arrow keys.
Then press enter on your keyboard to boot into Safe Mode
.


>>>> Download this file and doubleclick on it to run it. Allow the information to be merged with the registry.

RKill....

Download and Run RKill
  • Please download RKill by Grinler from one of the 4 links below and save it to your desktop.

    Link 1
    Link 2
    Link 3
    Link 4

  • Before we begin, you should disable your anti-malware softwares you have installed so they do not interfere RKill running as some anti-malware softwares detect RKill as malicious. Please refer to this page if you are not sure how.
  • Double-click on Rkill on your desktop to run it. (If you are using Windows Vista, please right-click on it and select Run As Administrator)
  • A black screen will appear and then disappear. Please do not worry, that is normal. This means that the tool has been successfully executed.
  • If nothing happens or if the tool does not run, please let me know in your next reply

Do not reboot your computer after running rkill as the malware programs will start again. Or if rebooting is required run it again.


If you continue having problems running rkill.com, you can download iExplore.exe or eXplorer.exe, which are renamed copies of rkill.com, and try them instead.



Next run Superantisypware (SAS):

Download and scan with SUPERAntiSpyware Free for Home Users
  • Double-click SUPERAntiSpyware.exe and use the default settings for installation.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  • In the Main Menu, click the Preferences... button.
  • Click the Scanning Control tab.
  • Under Scanner Options make sure the following are checked (leave all others unchecked):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the control center screen.
  • Back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  • On the left, make sure you check C:\Fixed Drive.
  • On the right, under "Complete Scan", choose Perform Complete Scan.
  • Click "Next" to start the scan. Please be patient while it scans your computer.
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes".
  • To retrieve the removal information after reboot, launch SUPERAntispyware again.
    • Click Preferences, then click the Statistics/Logs tab.
    • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    • Please copy and paste the Scan Log results in your next reply.
  • Click Close to exit the program.
If you have a problem downloading, installing or getting SAS to run, try downloading and using the SUPERAntiSpyware Portable Scanner instead. Save the randomly named file (i.e. SAS_1710895.COM) to a usb drive or CD and transfer to the infected computer. Then double-click on it to launch and scan. The file is randomly named to help keep malware from blocking the scanner.


Rerun MBAM (MalwareBytes) like this:

Open MBAM in normal mode and click Update tab, select Check for Updates,when done
click Scanner tab,select Quick scan and scan (normal mode).
After scan click Remove Selected, Post new scan log and Reboot into normal mode.

Please ask any needed questions,post logs and Let us know how the PC is running now.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#3 djackson

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Posted 21 August 2011 - 02:20 PM

Hello sir. First of all thankyou for redirecting.
Follows a copy of relevant MBAM log. If language is a problem let me know, I´ll run quick translation.
if this helps, I´m running on a Windows 7 64x.

Malwarebytes' Anti-Malware 1.51.1.1800
www.malwarebytes.org

Versão da Base de Dados: 7483

Windows 6.1.7601 Service Pack 1
Internet Explorer 8.0.7601.17514

17/08/2011 13:12:27
mbam-log-2011-08-17 (13-12-27).txt

Tipo de Verificação: Verificação Completa (C:\|)
Objetos escaneados: 259289
Tempo decorrido: 26 minuto(s), 59 segundo(s)

Processos de Memória Infectados: 0
Módulos de Memória Infectados: 0
Chaves de Registro Infectadas: 8
Valores de Registro Infectados: 1
Itens de Dados no Registro Infectados: 0
Pastas Infectadas: 0
Arquivos Infectados: 2

Processos de Memória Infectados:
(Não foram detectados ítens maliciosos)

Módulos de Memória Infectados:
(Não foram detectados ítens maliciosos)

Chaves de Registro Infectadas:
HKEY_CLASSES_ROOT\CLSID\{9EC30204-384D-11D3-9CA3-00A024F0AF03} (Spyware.Banker) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\TypeLib\{9EC301F7-384D-11D3-9CA3-00A024F0AF03} (Spyware.Banker) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Interface\{59EAE925-6127-11D3-9CA9-00A024F0AF03} (Spyware.Banker) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CertifWin.ValidaUsuario.1 (Spyware.Banker) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CertifWin.ValidaUsuario (Spyware.Banker) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Settings\{9EC30204-384D-11D3-9CA3-00A024F0AF03} (Spyware.Banker) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{9EC30204-384D-11D3-9CA3-00A024F0AF03} (Spyware.Banker) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Code Store Database\Distribution Units\{9EC30204-384D-11D3-9CA3-00A024F0AF03} (Spyware.Banker) -> Quarantined and deleted successfully.

Valores de Registro Infectados:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs\C:\WINDOWS\SYSTEM32\LOGOF.DLL (Spyware.Banker) -> Value: LOGOF.DLL -> Quarantined and deleted successfully.

Itens de Dados no Registro Infectados:
(Não foram detectados ítens maliciosos)

Pastas Infectadas:
(Não foram detectados ítens maliciosos)

Arquivos Infectados:
c:\Windows\System32\Logof.dll (Spyware.Banker) -> Quarantined and deleted successfully.
c:\Windows\SysWOW64\Logof.dll (Spyware.Banker) -> Quarantined and deleted successfully.

#4 boopme

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Posted 21 August 2011 - 02:31 PM

Good, Did you run ComboFis??

banker is a password stealer so you will need to change those when we are done.



Sorry I double posted.

Edited by boopme, 21 August 2011 - 02:33 PM.

How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#5 djackson

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Posted 21 August 2011 - 02:52 PM

I did run Combofix. Problem seems to reappear when I access one specific site, despite quarantine at MBAM.

#6 boopme

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Posted 21 August 2011 - 06:51 PM

The one site,,,Is is a redirect issue?

Run this and see if it gets it.

I'd like us to scan your machine with ESET OnlineScan
  • Hold down Control and click on the following link to open ESET OnlineScan in a new window.
    ESET OnlineScan
  • Click the Posted Image button.
  • For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)
    • Click on Posted Image to download the ESET Smart Installer. Save it to your desktop.
    • Double click on the Posted Image icon on your desktop.
  • Check Posted Image
  • Click the Posted Image button.
  • Accept any security warnings from your browser.
  • Under scan settings, check Posted Image and check Remove found threats
  • Click Advanced settings and select the following:
    • Scan potentially unwanted applications
    • Scan for potentially unsafe applications
    • Enable Anti-Stealth technology
  • ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
  • When the scan completes, push Posted Image
  • Push Posted Image, and save the file to your desktop using a unique name, such as ESETScan. Include the contents of this report in your next reply.
  • Push the Posted Image button.
  • Push Posted Image


NOTE: In some instances if no malware is found there will be no log produced.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#7 djackson

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Posted 21 August 2011 - 07:29 PM

Hello boopme. Sorry for absence.
It is not a redirect issue, I believe MBAM is flagging security plugons as trojans.
In the meanwhile I did check at MBAM community, found out that the software does tend to produce quite a lot of FP"s. Usually upon being reported those are corrected on the next update.
For now I will wait an see if I do have a rccurring problem, before attempting further alterations on my computer. I still can´t figure out what it is, that ComboFix really does.

For now I thank You for attention.

#8 quietman7

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Posted 22 August 2011 - 01:15 PM

I still can´t figure out what it is, that ComboFix really does.

ComboFix does a lot when being used under the guidance and supervision of a trained expert.

However, sUBs, the developer of ComboFix, has asked that the inner workings of the tool not be discussed in public in order to safeguard and protect the integrity of the tool from malware writers.

:step1: Questions about ComboFix and how it works:

ComboFix usage, Questions, Help? - Look here

Safeguarding ComboFix from malware writers is necessary and important so that we can continue to use it without attackers having knowledge how to defeat it. Everything we discuss can be read by the bad guys. Yes, they read forum topics looking for clues on how to circumvent our tools. We don't want to provide any information they can use against us so we deliberately limit discussion which sometimes may appear vague or not fully address a specific question. That's the decision by the creator of ComboFix so we hope you understand and it should not be taken personal.

The only public information that is available can be found in this authorized guide: How to use ComboFix.
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