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

virus attack


  • Please log in to reply
3 replies to this topic

#1 amicable

amicable

  • Members
  • 14 posts
  • OFFLINE
  •  
  • Local time:01:28 PM

Posted 01 August 2009 - 12:46 AM

Hi,

I am new to this forum. My system is all of a sudden behaving unexpectedly. while booting the system, I am getting a message saying that DATA EXECUTION PREVENTION is closing the application and when I closed that message. But explorer was not opened at all. I have opened it through task manager.

When I opened the internet explorer, a window shows advertisement pops up. Kindly help me in fixing this problem.

I have attached MBAM log.
Malwarebytes' Anti-Malware 1.39
Database version: 2421
Windows 5.1.2600 Service Pack 2

8/1/2009 11:28:50 AM
mbam-log-2009-08-01 (11-28-50).txt

Scan type: Full Scan (C:\|)
Objects scanned: 185224
Time elapsed: 16 minute(s), 25 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 2
Registry Keys Infected: 25
Registry Values Infected: 5
Registry Data Items Infected: 3
Folders Infected: 4
Files Infected: 12

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
C:\WINDOWS\system32\dxvars.dll (Trojan.Agent) -> Delete on reboot.
C:\WINDOWS\system32\ipcmd.dll (Trojan.Agent) -> Delete on reboot.

Registry Keys Infected:
HKEY_CLASSES_ROOT\mjcore.mjcore (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\TypeLib\{e0f01490-dcf3-4357-95aa-169a8c2b2190} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Interface\{17e44256-51e0-4d46-a0c8-44e80ab4ba5b} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{d88e1558-7c2d-407a-953a-c044f5607cea} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{d88e1558-7c2d-407a-953a-c044f5607cea} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{d88e1558-7c2d-407a-953a-c044f5607cea} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\mjcore.mjcore.1 (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\xml.xml (Trojan.FakeAlert) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\xml.xml.1 (Trojan.FakeAlert) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Typelib\{9233c3c0-1472-4091-a505-5580a23bb4ac} (Trojan.FakeAlert) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\AppID\{80ef304a-b1c4-425c-8535-95ab6f1eefb8} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Cognac (Rogue.Multiple) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\MSFox (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\icf (Rootkit.ADS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\icf (Rootkit.ADS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet004\Services\icf (Rootkit.ADS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\icf (Rootkit.ADS) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MS Juan (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MS Track System (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\rdfa (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\FCOVM (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RemoveRP (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\XML (Trojan.FakeAlert) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\AGprotect (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\AppID\MJCore.dll (Trojan.BHO) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Toolbar\WebBrowser\{90b8b761-df2b-48ac-bbe0-bcc03a819b3b} (Adware.Zango) -> Quarantined and deleted successfully.
HKEY_USERS\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pridl (Trojan.Downloader) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Services\del (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Desktop\id (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Desktop\host (Malware.Trace) -> Quarantined and deleted successfully.

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\FirewallDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\UpdatesDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.

Folders Infected:
C:\resycled (Trojan.DNSChanger) -> Quarantined and deleted successfully.
C:\Program Files\Jcore (Trojan.BHO) -> Quarantined and deleted successfully.
C:\Documents and Settings\Administrator\Application Data\pridl (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\Documents and Settings\Administrator\Application Data\cft (Trojan.Downloader) -> Quarantined and deleted successfully.

Files Infected:
C:\Program Files\Jcore\Jcore2.dll (Trojan.BHO) -> Quarantined and deleted successfully.
c:\system volume information\_restore{a541159f-dc7f-449d-8bfa-8d4d20d1dbfe}\RP184\A0059286.exe (Adware.Zango) -> Quarantined and deleted successfully.
c:\WINDOWS\Temp\VRT10.tmp (Malware.Tool) -> Quarantined and deleted successfully.
c:\WINDOWS\Temp\VRT8.tmp (Malware.Tool) -> Quarantined and deleted successfully.
c:\documents and settings\administrator\application data\pridl\pridl.exe (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\reader_s.exe (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\svchost.exe:exe.exe (Rootkit.ADS) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\drivers\str.sys (Rootkit.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\dxvars.dll (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\ipcmd.dll (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\sysdiag.dll (Trojan.Agent) -> Delete on reboot.
C:\WINDOWS\system32\winntcmd_2_0.dll (Trojan.Agent) -> Quarantined and deleted successfully.

Please let me know what I have to do now.

Edited by amicable, 01 August 2009 - 01:01 AM.


BC AdBot (Login to Remove)

 


#2 DaChew

DaChew

    Visiting Alien


  • BC Advisor
  • 10,317 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:millenium falcon and rockytop
  • Local time:01:28 PM

Posted 01 August 2009 - 01:35 AM

C:\WINDOWS\system32\reader_s.exe


This is Virut, even without this, there are several very dangerous rootkits/backdoor trojans

I'm afraid I have very bad news.

Your system is infected with a nasty variant of Virut, 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. Other variants of virut can even penetrate and infect .exe files within compressed files (.zip, .cab, rar). 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 and in some instances can disable Windows File Protection. 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 longer virut remains on a computer, the more critical system files will become infected and corrupt so the degree of infection can vary.

The virus disables Windows File Protection by injecting code into the "winlogon.exe" process that patches system code in memory.

CA Virus detail of W32/Virut

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:

Virut is not disinfectable. Your only option is to perform a full reformat. Do NOT attempt a repair install. It shall be a waste of time. If you do so, the infected executables remain on the machine & you shall likely trigger another bout of Virut.

If you do not know how to perform a fresh install, use this website > http://www.windowsreinstall.com/

Note: If you have to backup files, do so only for MS Office documents & any non executable file. Burn them to CD/DVD. Do NOT copy files from the infected machine to your pendrive OR another machine. You risk infecting the other machine.


full reformat means, format on ALL partitions.


Looking at the result, I would advised you to start backup all of your valuable data/documents/pictures/movies/songs/etc.. Do NOT backup any applications/installer and Do NOT backup any .exe/.scr/.htm/.html/.xml/.zip/.rar/.pif/.asp/.php/.iso files...

Make sure you back-up everything ONLY via CD or DVD (non-rewritable).. If you need to backup into external hard drive or thumbdrive, make sure it is EMPTY.. Meaning NO FILE inside it.. Format the external drive first before attach it to the infected computer.. A single .exe file inside the external drive may infected other computers as well


Last 2 quotes sUBS and fenzodah...
Chewy

No. Try not. Do... or do not. There is no try.

#3 amicable

amicable
  • Topic Starter

  • Members
  • 14 posts
  • OFFLINE
  •  
  • Local time:01:28 PM

Posted 01 August 2009 - 03:06 AM

Do I have to format the entire system or I need formatting just C drive alone? I don't have backup's of the softwares I have. Kindly help me.

#4 DaChew

DaChew

    Visiting Alien


  • BC Advisor
  • 10,317 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:millenium falcon and rockytop
  • Local time:01:28 PM

Posted 01 August 2009 - 03:17 AM

Read the bottom quote
Chewy

No. Try not. Do... or do not. There is no try.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users