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"Security Tool" infection,


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6 replies to this topic

#1 kennydevon

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Posted 30 September 2010 - 06:34 PM

The problem started with search result redirection in Google which was irritating. But now I have been completely attacked and cannot use my laptop at all with incessant fake security warnings from "Security Tool"

I have read and follwed the preparatory guide.
Unfortunately neither the DDS nor the GMER worked
The DDS failed to provide any txt files
GMER did nothing. However the computer "stopped" with a blue screen message saying that it had shut down to protect itself|

The CD emulation software has been run sucessfully

I am using another computer to write this post

Pls pls help

Kenny

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#2 myrti

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Posted 05 October 2010 - 06:58 AM

Hello and welcome to Bleeping Computer

We apologize for the delay in responding to your request for help. Here at Bleeping Computer we get overwhelmed at times, and we are trying our best to keep up. Please note that your topic was not intentionally overlooked. Our mission is to help everyone in need, but sometimes it takes just a little longer to get to every request for help. No one is ignored here.

If you have since resolved the original problem you were having, we would appreciate you letting us know. If not please perform the following steps below so we can have a look at the current condition of your machine.

Please include a clear description of the problems you're having, along with any steps you may have performed so far.

Please refrain from running tools or applying updates other than those we suggest while we are cleaning up your computer. The reason for this is so we know what is going on with the machine at any time. Some programs can interfere with others and hamper the recovery process.

Even if you have already provided information about your PC, we need a new log to see what has changed since you originally posted your problem.
We need to create an OTL Report
  1. Please download OTL from one of the following mirrors:
  2. Save it to your desktop.
  3. Double click on the icon on your desktop.
  4. Click the "Scan All Users" checkbox.
  5. In the custom scan box paste the following:
    CODE
    msconfig
    safebootminimal
    activex
    drivers32
    netsvcs
    %SYSTEMDRIVE%\*.exe
    /md5start
    eventlog.dll
    scecli.dll
    netlogon.dll
    cngaudit.dll
    sceclt.dll
    ntelogon.dll
    logevent.dll
    iaStor.sys
    nvstor.sys
    atapi.sys
    IdeChnDr.sys
    viasraid.sys
    AGP440.sys
    vaxscsi.sys
    nvatabus.sys
    viamraid.sys
    nvata.sys
    nvgts.sys
    iastorv.sys
    ViPrt.sys
    eNetHook.dll
    ahcix86.sys
    KR10N.sys
    nvstor32.sys
    ahcix86s.sys
    nvrd32.sys
    symmpi.sys
    adp3132.sys
    mv61xx.sys
    nvraid.sys
    /md5stop
    %systemroot%\*. /mp /s
    %systemroot%\system32\*.dll /lockedfiles
    %systemroot%\Tasks\*.job /lockedfiles
    %systemroot%\system32\drivers\*.sys /lockedfiles
    %systemroot%\System32\config\*.sav
    %systemroot%\system32\drivers\*.sys /90
  6. Push the button.
  7. Two reports will open, copy and paste them in a reply here:
    • OTL.txt <-- Will be opened
    • Extra.txt<--Will be minimized

In the upper right hand corner of the topic you will see a button called Options. If you click on this in the drop-down menu you can choose Track this topic. I suggest you do this and select Immediate E-Mail notification and click on Proceed. This way you will be advised when we respond to your topic and facilitate the cleaning of your machine.

After 5 days if a topic is not replied to we assume it has been abandoned and it is closed.

regards myrti

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If I have been helping you and haven't replied in 2 days, feel free to shoot me a PM! Please don't send help request via PM, unless I am already helping you. Use the forums!

 

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#3 kennydevon

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Posted 05 October 2010 - 09:47 AM

Hi, and thank you.

While waiting for someone to respond, I tried a few things.

First I started the infected computer in safe mode with networking. The virus did not appear. I tried running the DDS script file and GMER, and this time they appear to have worked. I dont know if the results are useful when run in safe mode, but just in case I have included the DDS, Attach, and ARK text files, along with the OTL results run in safe mode.

I attempted to run the OTL in Normal mode. I see the OTL window for a split second, then the Security Tool virus kicks in and prevents it running.

I also read the article on RKILL and attempted to run it in Normal mode. All 5 variants of RKILL were detected and blocked by the virus which then proceded to delete the OTL software. This prevented me from using the suggested technique of repeatedly invoking RKILL.

Seems like one mean virus.

Your help is much appreciated.

kenny

#4 myrti

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Posted 06 October 2010 - 03:04 AM

Hi,

you have been infected by a nasty rootkit. It is a backdoor trojan.

This allows hackers to remotely control your computer, steal critical system information and download and execute files.

I would counsel you to disconnect this PC from the Internet immediately. If you do any banking or other financial transactions on the PC or if it should contain any other sensitive information, please get to a known clean computer and change all passwords where applicable, and it would be wise to contact those same financial institutions to apprise them of your situation.

Though the trojan has been identified and can be killed, because of it's backdoor functionality, your PC is very likely compromised and there is no way to be sure your computer can ever again be trusted. Many experts in the security community believe that once infected with this type of trojan, the best course of action would be a reformat and reinstall of the OS. Please read these for more information:

How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?
When Should I Format, How Should I Reinstall

We can still clean this machine but I can't guarantee that it will be 100% secure afterwards. Let me know what you decide to do.


If you decide to clean, then please run ComboFix and post the log in your next reply:

Please download ComboFix from one of these locations:

Link 2
Link 3

* IMPORTANT !!! Save ComboFix.exe to your Desktop
  • Temporarily disable isable your AntiVirus and AntiSpyware applications. They may otherwise interfere with our tools
    Usually this can be done via a right click on the System Tray icon, check this tutorial for disabling the most common security programs: Link

  • Double click on ComboFix.exe & follow the prompts.
  • As part of it's process, ComboFix will check to see if the Microsoft Windows Recovery Console is installed. With malware infections being as they are today, it's strongly recommended to have this pre-installed on your machine before doing any malware removal. It will allow you to boot up into a special recovery/repair mode that will allow us to more easily help you should your computer have a problem after an attempted removal of malware.
  • Follow the prompts to allow ComboFix to download and install the Microsoft Windows Recovery Console, and when prompted, agree to the End-User License Agreement to install the Microsoft Windows Recovery Console.
**Please note: If the Microsoft Windows Recovery Console is already installed, ComboFix will continue it's malware removal procedures.



Once the Microsoft Windows Recovery Console is installed using ComboFix, you should see the following message:



Click on Yes, to continue scanning for malware.

When finished, it will produce a log for you. Please include the C:\ComboFix.txt in your next reply.

This tool is not a toy and not for everyday use.
ComboFix SHOULD NOT be used unless requested by a forum helper


If you need help, see this link:
http://www.bleepingcomputer.com/combofix/how-to-use-combofix

regards myrti

is that a bird?  a plane? nooo it's the flying blueberry!

If I have been helping you and haven't replied in 2 days, feel free to shoot me a PM! Please don't send help request via PM, unless I am already helping you. Use the forums!

 

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#5 kennydevon

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Posted 07 October 2010 - 12:49 PM

Hi again

While awaiting your reply I read some of the tutorials and ran MBAM. It found and reportedly eliminated a whole bunch of malware. I then noticed from the general instructions that I shoudn't really have done that in the middle of our dialogue - sorry!

I have decided to go ahead and try to clean the computer, rather than reformat.

I have now run the COMBOFIX program. Based on past experience, I ran it first in safe mode, then again in Normal mode. The two logs are attached.

I notice that a Files and Settings Transfer wizard has made its way on to my programme menu - is this part of the malware?

What is the best free anti-malware continuous protection software, and where can I download it safely?

Thanks

Kenny

#6 myrti

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Posted 08 October 2010 - 04:09 AM

Hi,

I'm afraid I have very bad news.

Win32/Ramnit.A is a file infector with IRCBot functionality which infects .exe, and .HTML/HTM files, and opens a back door that compromises your computer. Using this backdoor, a remote attacker can access and instruct the infected computer to download and execute more malicious files. The infected .HTML or .HTM files may be detected as Virus:VBS/Ramnit.A. Win32/Ramnit.A!dll is a related file infector often seen with this infection. It too has IRCBot functionality which infects .exe, .dll and .HTML/HTM files and opens a back door that compromises your computer. This component is injected into the default web browser by Worm:Win32/Ramnit.A which is dropped by a Ramnit infected executable file.

-- Note: As with most malware infections, the threat name may be different depending on the anti-virus or anti-malware program which detected it. Each security vendor uses their own naming conventions to identify various types of malware.
With this particular infection the safest solution and only sure way to remove it effectively is to reformat and reinstall the OS.

Why? The malware injects code in legitimate files similar to the Virut virus and in many cases the infected files (which could number in the thousands) cannot be disinfected properly by your anti-virus. When disinfection is attempted, the files often become corrupted and the system may become unstable or irreparable. The longer Ramnit.A remains on a computer, the more files it infects and corrupts so the degree of infection can vary.

Ramnit is commonly spread via a flash drive (usb, pen, thumb, jump) infection where it copies Worm:Win32/Ramnit.A with a random file name. The infection is often contracted by visiting remote, crack and keygen sites. These type of sites are infested with a smörgåsbord of malware and a major source of system infection.

In my opinion, Ramnit.A is not effectively disinfectable, so your best option is to perform a full reformat as there is no guarantee this infection can be completely removed. In most instances it may have caused so much damage to your system files that it cannot be completely cleaned or repaired. Further, your machine has likely been compromised by the backdoor Trojan 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 your anti-virus reports that the malware appears to have been 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:
QUOTE
Whenever a system has been compromised by a backdoor payload, it is impossible to know if or how much the backdoor has been used to affect your system...There are only a few ways to return a compromised system to a confident security configuration. These include:
• Reimaging the system
• Restoring the entire system using a full system backup from before the backdoor infection
• Reformatting and reinstalling the system
Backdoors and What They Mean to You

This is what Jesper M. Johansson at Microsoft TechNet has to say: Help: I Got Hacked. Now What Do I Do?.
QUOTE
The only way to clean a compromised system is to flatten and rebuild. That’s right. If you have a system that has been completely compromised, the only thing you can do is to flatten the system (reformat the system disk) and rebuild it from scratch (reinstall Windows and your applications).

is that a bird?  a plane? nooo it's the flying blueberry!

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#7 myrti

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Posted 16 October 2010 - 04:01 PM

Due to lack of feedback, this topic is now Closed

If you need this topic reopened, please send me a PM.
Please include the address of this thread in your request.
This applies only to the original topic starter.

Everyone else please start a new topic.

With Regards,
myrti

is that a bird?  a plane? nooo it's the flying blueberry!

If I have been helping you and haven't replied in 2 days, feel free to shoot me a PM! Please don't send help request via PM, unless I am already helping you. Use the forums!

 

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