Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Trojan.Dropper/SVCHost-Fake


  • This topic is locked This topic is locked
3 replies to this topic

#1 manmountain8

manmountain8

  • Members
  • 43 posts
  • OFFLINE
  •  
  • Local time:08:46 AM

Posted 22 July 2011 - 05:43 PM

I have a nasty rootkit called Trojan.Dropper/SVCHost-Fake, and after much research I have concluded that no one has figured out how to remove this yet. It blocks every anti-virus program, anti-spyware, rootkit removal tool, and even diagnostic tools like combofix. Any attempted scan will be shutdown in midscan and any attempt to reload the program results in the error message "Cannot find specified device, path, or file. You may not have permission to access the file." One useful tool for this is inherit.exe. Using this tool will allow me to reload programs like Malewarebytes or Super Anti-spyware after permissions have been denied, but unfortunatley any scan is still stopped before it is completed. Any attempt to stop a scan early and access the quarantine list shuts the program down as well.

There is also an associated file and memory process called \.\GLOBALROOT\DEVICE\SVCHOST.EXE\SVCHOST.EXE

Rkill claims to stop this malicious SVCHOST.EXE process but running Rkill again immediately afterward shows that it just comes right back. The file by the same name can not be found or deleted manually either. I think this could be as simple as stopping one process and removing one file, but so far no one has figured out how to do that.

Basically, all it does is shutdown Internet Explorer and all of the anti-virus programs and tools I have mentioned. All other pop ups and fake security programs were easy to get rid of. The root of the problem is still there though. The only solution so far is to reformat the HD and reload the OS, but since I don't have an OS disc to reload, and Firefox seems to be working fine for now, I would like to be a Guinea pig for anyone who has some new ideas for how to deal with this pesky rootkit. I want to hold out for a solution for as long as I can. Anyone who can figure this one out is a friggin genius in my book. I would like to meet the guy that wrote this one too, although I'm not sure if I would knock him out or kneel down before him. Probably both. LOL

Edited by manmountain8, 22 July 2011 - 05:57 PM.


BC AdBot (Login to Remove)

 


#2 HelpBot

HelpBot

    Bleepin' Binary Bot


  • Bots
  • 12,631 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:10:46 AM

Posted 02 August 2011 - 10:20 AM

Hello and welcome to Bleeping Computer!

I am HelpBot: an automated program designed to help the Bleeping Computer Staff better assist you!

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.

To help Bleeping Computer better assist you please perform the following steps:

***************************************************

First, I need to know if you still need help! To tell me this, please click on http://www.bleepingcomputer.com/logreply/410744 and follow the instructions there. If you no longer need help, this is all you need to do. If you do need help please continue below.

***************************************************

If you still need help, I would like you to post a Reply to this topic (click the "Add Reply" button in the lower right hand of this page). In that reply, please include the following information:

  • If you have not done so already, include a clear description of the problems you're having, along with any steps you may have performed so far.
  • A new DDS and GMER log. For your convenience, you will find the instructions for generating these logs repeated at the bottom of this post.
    • Please do this even if you have previously posted logs for us.
    • If you were unable to produce the logs originally please try once more.
    • If you are unable to create a log please provide detailed information about your installed Windows Operating System including the Version, Edition and if it is a 32bit or a 64bit system.
    • If you are unsure about any of these characteristics just post what you can and we will guide you.
  • Please tell us if you have your original Windows CD/DVD available.
  • Upon completing the above steps and posting a reply, another staff member will review your topic and do their best to resolve your issues.

Thank you for your patience, and again sorry for the delay.

***************************************************

We need to see some information about what is happening in your machine. Please perform the following scan again:

  • Download DDS by sUBs from one of the following links if you no longer have it available. Save it to your desktop.
  • Double click on the DDS icon, allow it to run.
  • A small box will open, with an explanation about the tool. No input is needed, the scan is running.
  • Notepad will open with the results.
  • Follow the instructions that pop up for posting the results.
  • Close the program window, and delete the program from your desktop.
Please note: You may have to disable any script protection running if the scan fails to run. After downloading the tool, disconnect from the internet and disable all antivirus protection. Run the scan, enable your A/V and reconnect to the internet.

Information on A/V control HERE


We also need a new log from the GMER anti-rootkit Scanner.

Please note that if you are running a 64-bit version of Windows you will not be able to run GMER and you may skip this step.

Please first disable any CD emulation programs using the steps found in this topic:

Why we request you disable CD Emulation when receiving Malware Removal Advice


Then create another GMER log and post it as an attachment to the reply where you post your new DDS log. Instructions on how to properly create a GMER log can be found here:

How to create a GMER log


As I am just a silly little program running on the BleepingComputer.com servers, please do not send me private messages as I do not know how to read and reply to them! Thanks!

#3 manmountain8

manmountain8
  • Topic Starter

  • Members
  • 43 posts
  • OFFLINE
  •  
  • Local time:08:46 AM

Posted 02 August 2011 - 01:03 PM

I was able to remove it myself. I used sasaferun.com from SUPERantispyware. On the first try it shutdown in midscan like it was always doing, but the 2nd try was golden. It quarantined and deleted them. Then I used File Assassin from malewarebytes to clean the rest of it up. The only problem I have now is that Internet explore still doesn't work.

#4 HelpBot

HelpBot

    Bleepin' Binary Bot


  • Bots
  • 12,631 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:10:46 AM

Posted 04 August 2011 - 10:12 AM

You have stated that you no longer need help with this issue, therefore I am closing this topic. If that is not the case and you need or wish to continue with this topic, please send any Moderator a Personal Message (PM) that you would like this topic re-opened.

As I am just a silly little program running on the BleepingComputer.com servers, please do not send me private messages as I do not know how to read and reply to them! Thanks!




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users