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

USB drives infected once inserted.


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

#1 silvertree

silvertree

  • Members
  • 14 posts
  • OFFLINE
  •  
  • Local time:07:05 AM

Posted 06 August 2009 - 06:52 PM

Hello.

WinXP SP2

2 days ago, against better judgement, I installed a program. This program came from a torrent and checked out with an AVG scan. Living inside the packed installer was a little treat that you all can appreciate.

I knew what I was getting into the moment I saw svchost.exe appear in the install directory. I mean, obviously I knew I was being risky anyway, but I'm wasting your time.

What I have used so far.

MBAM SAS RootRepeal SDFix GooredFix smitfraudfix Hijackthis AVG SpybotS&D AdAware

I have removed versions of smitfraud and trojan.dropper.agent.nsg etc.

I have recently removed CLB rootkit.

I must give thanks to all the guides on bleepingcomputer for all your excellent help. My process list looks much smaller, my machine is running as it did, I am no longer being redirected from my google searches and MBAM reports a clean full scan.

Still, my machine is infecting USB drives upon insertion.

When inserted a folder and 3 files are being created.


docs\desktop.ini
docs\print.exe
autorun.inf


The docs folder is hidden and has a recycle bin icon.

I would assume inserting this infected drive into another machine would be unpleasant.

The autorun.inf is locked from editing in a normal environment.

The contents of the autorun.inf are as follows:

***
[autorun
;OEP
open=.\Docs\print.exe
;??
:cmp
;tg
icon=%SystemRoot%\system32\SHELL32.dll,4
:jmp3
;?g?Ywb??F?]L??CF?m?f=?VT
action=Open folderto view files usingWindowsExplorer
;?d???a?s????Y??;`w??X???L
shell\\\\\\\open\\\\command=Docs////print.exe
:jne1
;?ojBv??|??
shell\\\explore\\\\\\\command=.\\\\Docs/print.exe
;=T???L?A???x
;;;;;;;;;;;;;
useautoplay=1
;`Q??
;(?s??
[autorun]
:goto bleepavg

In this case "bleepavg" rhymes with duck

I have not been able to find any google results regarding this combination of "docs" "print.exe" "autorun.inf" and "goto bleepavg".



Thank you for reading.

BC AdBot (Login to Remove)

 


#2 ComputerNutjob

ComputerNutjob

  • Banned
  • 125 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:06:05 AM

Posted 06 August 2009 - 06:57 PM

Truck? Muck? Suck? Luck? Huck? Give us a hint. :D

Quick tip: Never download torrents. They can be useful in some situations, but the risk of a virus is very high.

Edited by ComputerNutjob, 06 August 2009 - 07:00 PM.


#3 Budapest

Budapest

    Bleepin' Cynic


  • Moderator
  • 23,577 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:09:05 PM

Posted 06 August 2009 - 07:13 PM

Download and Run FlashDisinfector

You may have a flash drive infection. These worms travel through your portable drives. If they have been connected to other machines, they may now be infected.

* 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.
Note: Some security programs will flag Flash_Disinfector as being some sort of malware, you can safely ignore these warnings
* The utility may ask you to insert your flash drive and/or other removable drives including your mobile phone. Please do so and allow the utility to clean up those drives as well.
* Wait until it has finished scanning and then exit the program.
* Reboot your computer when done.

Note: Flash_Disinfector will create a hidden folder named autorun.inf in each partition and every USB drive plugged in when you ran it. Don't delete this folder. It will help protect your drives from future infection.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#4 silvertree

silvertree
  • Topic Starter

  • Members
  • 14 posts
  • OFFLINE
  •  
  • Local time:07:05 AM

Posted 06 August 2009 - 07:29 PM

Thanks Budapest.

I have used Flash Disinfector. It does not clean the infected USB device but it does protect a clean one from getting infected again. Which would be helpful if I can't manage to clear up why my pc is still infecting the USB devices to begin with.

I have used linux to format some devices and they are clean before I place in the my pc and then they get infected.

I also use my digital camera to do a low level format which saves time since I only run linux from a livecd. The infection doesn't seem to affect the Canon SD600. :D


edited to indicate that disinfection does not work

Edited by silvertree, 06 August 2009 - 07:31 PM.


#5 Budapest

Budapest

    Bleepin' Cynic


  • Moderator
  • 23,577 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:09:05 PM

Posted 06 August 2009 - 07:31 PM

Before we start fixing anything you should print out these instructions or copy them to a NotePad file so they will be accessible. Some steps will require you to disconnect from the Internet or use Safe Mode and you will not have access to this page.

Please download Dr.Web CureIt and save it to your desktop. DO NOT perform a scan yet.
alternate download link
Note: The file will be randomly named (i.e. 5mkuvc4z.exe).

Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Scan with Dr.Web CureIt as follows:
  • Double-click on the randomly named file to open the program and click Start. (There is no need to update if you just downloaded the most current version
  • Read the Virus check by DrWeb scanner prompt and click Ok where asked to Start scan now? Allow the setup.exe to load if asked by any of your security programs.
  • The Express scan will automatically begin.
    (This is a short scan of files currently running in memory, boot sectors, and targeted folders).
  • If prompted to dowload the Full version Free Trial, ignore and click the X to close the window.
  • If an infected object is found, you will be prompted to move anything that cannot be cured. Click Yes to All. (This will move any detected files to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if they can't be cured)
  • After the Express Scan is finished, put a check next to Complete scan to scan all local disks and removable media.
  • In the top menu, click Settings > Change settings, and uncheck "Heuristic analysis" under the "Scanning" tab, then click Apply, Ok.
  • Back at the main window, click the green arrow "Start Scanning" button on the right under the Dr.Web logo.
  • Please be patient as this scan could take a long time to complete.
  • When the scan has finished, a message will be displayed at the bottom indicating if any viruses were found.
  • Click Select All, then choose Cure > Move incurable.
  • In the top menu, click file and choose save report list.
  • Save the DrWeb.csv report to your desktop.
  • Exit Dr.Web Cureit when done.
  • Important! Reboot your computer because it could be possible that files in use will be moved/deleted during reboot.
  • After reboot, post the contents of the log from Dr.Web in your next reply. (You can use Notepad to open the DrWeb.cvs report)

The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#6 silvertree

silvertree
  • Topic Starter

  • Members
  • 14 posts
  • OFFLINE
  •  
  • Local time:07:05 AM

Posted 07 August 2009 - 08:28 AM

Balls! I neglected to save the report from Dr. Web. Its discoveries were minimal from what I can recall.

It Identified SDFix and Smitfraudfix and usb disinfector as all being hack tools and "healed" those.

It found mIRC 6.2 and told me it was bad.

There was a copy of USB disinfector hiding in my _systemrestore folder which I can't explain but it was found.

It deleted 2 of my really old saved installers for Daemon tools lite and mIRC62.

The only other thing it found was Win32.HLLW.Autoruner.origin in my _systemrestore folder. It was removed.

I'm not convinced that HLLW was the culprit because I searched its aliases and it appears to be a Trojan that is not self propagating and the most obvious clue is that Dr.Web failed to identify anything on the infected USB device during its scan.

I have disabled system restore for the moment to clear the history. I will re-enable it once\if I am convinced I have a clean machine.

I am still infecting my usb device. It defies my logic but is it possible that the SD card I am using is retaining the infection even through low level formats?

#7 silvertree

silvertree
  • Topic Starter

  • Members
  • 14 posts
  • OFFLINE
  •  
  • Local time:07:05 AM

Posted 07 August 2009 - 10:32 PM

I used Linux again to gain access to the hidden directory on the USB disk.

I uploaded "print.exe" to virustotal.com

My copy of "print.exe" does not come up as infected under any of the engines virustotal uses.

So. Am I on the bleeding edge of infections or am I just chasing a white whale?

It is not an illusion that these files are being created without my knowledge but what program is doing it?

I know this is a new behaviour for my PC and I'm am absolutely certain that it's related to my infections from a few days ago.

I am even more certain it's an infection of some type because the locked autorun.inf directly curses AVG.

I guess I'm just going to keep updating all my scanners' databases each day and wait it out.

#8 Budapest

Budapest

    Bleepin' Cynic


  • Moderator
  • 23,577 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:09:05 PM

Posted 08 August 2009 - 02:46 AM

I guess I'm just going to keep updating all my scanners' databases each day and wait it out.

I don't really have any other suggestions unless you want to post a HJT log (in the HJT forum, not here).
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#9 Orange Blossom

Orange Blossom

    OBleepin Investigator


  • Moderator
  • 36,911 posts
  • OFFLINE
  •  
  • Gender:Not Telling
  • Location:Bloomington, IN
  • Local time:07:05 AM

Posted 08 August 2009 - 10:45 AM

Hello,

Now that you have posted a log here: http://www.bleepingcomputer.com/forums/t/247773/i-recently-cleaned-many-infections-but-am-i-done/ you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc) unless advised by a HJT Team member, nor should you ask for help elsewhere. Doing so can result in system changes which may not show in the log you already posted. Further, any modifications you make on your own may cause confusion for the helper assisting you and could complicate the malware removal process which would extend the time it takes to clean your computer.

From this point on the HJT Team should be the only members that you take advice from, until they have verified your log as clean.

Please be patient. It may take a while to get a response because the HJT Team members are EXTREMELY 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 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.

Please be patient. It may take several days, perhaps less, to get a response but your log will be reviewed and answered as soon as possible. I advise checking your topic once a day for responses.

To avoid confusion, I am closing this topic. Good luck with your log.

Orange Blossom :thumbsup:
Help us help you. If HelpBot replies, you MUST follow step 1 in its reply so we know you need help.

Orange Blossom

An ounce of prevention is worth a pound of cure

SpywareBlaster, WinPatrol Plus, ESET Smart Security, Malwarebytes' Anti-Malware, NoScript Firefox ext., Norton noscript




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users