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

vundo.h and/or winwebsec


  • Please log in to reply
3 replies to this topic

#1 shrubz

shrubz

  • Members
  • 2 posts
  • OFFLINE
  •  
  • Local time:09:55 PM

Posted 23 June 2009 - 04:06 AM

Hi I really hope somebody can help me - my vista laptop became infected yesterday. I know exactly where the infection came from and still have the infected .rar

When I unpacked it firefox quit so I knew something was wrong, I went into task manager and saw some suspicious looking processes but I could not stop them.

On restart the s&^% really hit the fan.

My background had been replaced with a black and red warning sign. Some obviously fake "protection" software called system security started running and telling me to upgrade. Obviously I ignored this.
Firefox won't start even in safe mode, IE starts but comes up with random warnings before eventually quitting.
There is a Windows security alert in my systray as the security centre service is turned off. If I open the warning I am told that "Windows host process (Rundll32) has stopped working. Close that and I get "To help protect your computer, Data Execution Prevention has closed Windows host process...."

So yesterday I ran the microsoft malware removal app which took about 6 hours and eventually found 2 threats:
Trojan:Win32/vundo.gen!x
TrojanDropper:Win32/vundo.h

Now on restart in normal mode when I try to log int o windows I get

"An unauthorized change was made to windows.
Windows has discovered a change that will result in limited Windows functionality. Use the link to fix"

Except when I click the link it uses my default browser firefox which crashes before starting. So then I get a pop up that gives me the link but the link is too long to fit in the box so I can't write it down.

I can however start in safe mode and before finding this forum I found some other advice to download and run Malwarebytes Anti-Malware.

So I have ran that and found about 350 infected files, removed them, restarted in normal mode but got the same "unauthorised change" dialogue and same firefox problem.

Restarted in safe mode and did a quick scan in malwarebytes and found four infections - here is the resulting log:

Malwarebytes' Anti-Malware 1.38
Database version: 2323
Windows 6.0.6001 Service Pack 1

23/06/2009 09:50:50
mbam-log-2009-06-23 (09-50-50).txt

Scan type: Quick Scan
Objects scanned: 90324
Time elapsed: 4 minute(s), 38 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 4

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

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:
c:\Windows\Temp\VRT2155.tmp (Trojan.Downloader) -> Quarantined and deleted successfully.
c:\Windows\Temp\VRT28F3.tmp (Trojan.Downloader) -> Quarantined and deleted successfully.
c:\Windows\Temp\VRT7F0E.tmp (Trojan.Downloader) -> Quarantined and deleted successfully.
c:\Windows\Temp\VRTC0AF.tmp (Trojan.Downloader) -> Quarantined and deleted successfully.


I am extra concerned because all my passwords are stored in sxipper for firefox :thumbsup:
I have changed the bank and paypal ones but I am a member at lots of places online and have a lot of changing to do but only half as much if I can get all my logins from firefox.

I also have lots of stuff I need to backup but windows backup won't start either :flowers:

If anyone could help me I would be eternally grateful :trumpet:

Edited by shrubz, 23 June 2009 - 06:11 AM.


BC AdBot (Login to Remove)

 


#2 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 51,271 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:10:55 PM

Posted 23 June 2009 - 06:50 AM

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.

Scanning with Malwarebytes Anti-Malware in safe or normal mode will work but removal functions are not as powerful in safe mode. MBAM is designed to be at full power when malware is running so safe mode is not necessary when using it. In fact, MBAM loses some effectiveness for detection & removal when used in safe mode because the program includes a special driver which does not work in safe mode. Further, scanning in safe mode prevents some types of malware from running so it may be missed during the detection process. Additionally, there are various types of malware infections which target the safeboot keyset so booting into safe mode is not always possible. For optimal removal, normal mode is recommended so it does not limit the abilities of MBAM. Doing a safe mode scan should only be done when a regular mode scan fails or you cannot boot up normally. If at any point you are able to boot normally, run MABM again.
.
.
Windows Insider MVP 2017-2018
Microsoft MVP Reconnect 2016
Microsoft MVP Consumer Security 2007-2015 kO7xOZh.gif
Member of UNITE, Unified Network of Instructors and Trusted Eliminators

If I have been helpful & you'd like to consider a donation, click 38WxTfO.gif

#3 shrubz

shrubz
  • Topic Starter

  • Members
  • 2 posts
  • OFFLINE
  •  
  • Local time:09:55 PM

Posted 23 June 2009 - 02:25 PM

Thanks for the help man.

I have ran DrWeb 3 times now - the first time it got to about 20% and around 180000 files scanned and found lots of files with win32/virut, then I got a blue screen and a crash, it was only on screen for 5 seconds or so so I didnt get chance to read it.
Then PC wouldnt start in safe mode so I had to start in normal, run chk disk as the laptop requests before login - still cant login in normal but then it lets me restart and loads in safe mode.
Ran it again with the same result but this time there were no threats until around 180000 when I remember seeing a file again that I had seen before in the list - powerarticlerewriter.
Then it crashed again exactly the same so followed same chkdisk process and thought I'll run it then stop it at 180k and export the log. Except this time it crashed virtually straight away. PC seems like it only crashes when dr.web is running and seemingly at random stages of the full scan :thumbsup:

The second time it crashed I get a windows system message after logging into safe mode about the error.

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.0.6001.2.1.0.768.3
Locale ID: 2057

Additional information about the problem:
BCCode: 1000008e
BCP1: C0000005
BCP2: 817A3857
BCP3: 87AF7034
BCP4: 00000000
OS Version: 6_0_6001
Service Pack: 1_0
Product: 768_1

Files that help describe the problem:
C:\Windows\Minidump\Mini062309-03.dmp
C:\Users\Chris\AppData\Local\Temp\WER-65629-0.sysdata.xml
C:\Users\Chris\AppData\Local\Temp\WERC003.tmp.version.txt

Read our privacy statement:
http://go.microsoft.com/fwlink/?linkid=501...mp;clcid=0x0409


Not sure whether I should post those files here?


Can you help me at all or am I screwed?


Thanks again for the advice :flowers:

Edited by shrubz, 23 June 2009 - 02:26 PM.


#4 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 51,271 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:10:55 PM

Posted 23 June 2009 - 02:38 PM

found lots of files with win32/virut

Virut is a polymorphic file infector with IRCBot functionality which infects .exe, .scr files, downloads more malicious files to your system, and opens a back door that compromises your computer. According to this Norman White Paper Assessment of W32/Virut, some variants can infect the HOSTS file and block access to security related web sites. Virux is an even more complex file infector which can embed an iframe into the body of web-related files and infect script files (.php, .asp, and .html). When Virut creates infected files, it also creates non-functional files that are corrupted beyond repair. In many cases the infected files cannot be disinfected properly by your anti-virus. When disinfection is attempted, the files become corrupted and the system may become irreparable.

The virus has a number of bugs in its code, and as a result it may misinfect a proportion of executable files....some W32/Virut.h infections are corrupted beyond repair.

McAfee Risk Assessment and Overview of W32/Virut

There are bugs in the viral code. When the virus produces infected files, it also creates non-functional files that also contain the virus...Due to the damaged caused to files by virut it's possible to find repaired but corrupted files. They became corrupted by the incorrect writing of the viral code during the process of infection. undetected, corrupted files (possibly still containing part of the viral code) can also be found. this is caused by incorrectly written and non-function viral code present in these files.

AVG Overview of W32/VirutThis kind of infection is contracted and spread by visiting remote, crack and keygen sites. These type of sites are infested with a smörgåsbord of malware and an increasing source of system infection. However, the CA Security Advisor Research Blog says they have found MySpace user pages carrying the malicious Virut URL. Either way you can end up with a computer system so badly damaged that recovery is not possible and it cannot be repaired. When that happens there is nothing you can do besides reformatting and reinstalling the OS.

...warez and crack web pages are being used by cybercriminals as download sites for malware related to VIRUT and VIRUX. Searches for serial numbers, cracks, and even antivirus products like Trend Micro yield malcodes that come in the form of executables or self-extracting files...quick links in these sites also lead to malicious files. Ads and banners are also infection vectors...

Keygen and Crack Sites Distribute VIRUX and FakeAV

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 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. You should change each password using a clean computer and 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:There is no guarantee this infection can be completely removed. In some instances it may have caused so much damage to your system that it cannot be completely cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. 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. Reinstalling Windows without first wiping the entire hard drive with a repartition and/or format will not remove the infection. The reinstall will only overwrite the Windows files. Any malware on the system will still be there afterwards. Please read:
.
.
Windows Insider MVP 2017-2018
Microsoft MVP Reconnect 2016
Microsoft MVP Consumer Security 2007-2015 kO7xOZh.gif
Member of UNITE, Unified Network of Instructors and Trusted Eliminators

If I have been helpful & you'd like to consider a donation, click 38WxTfO.gif




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users