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

Antivirus popup ad followed by persistent anti-malware blocking [Moved]


  • Please log in to reply
5 replies to this topic

#1 adius

adius

  • Members
  • 3 posts
  • OFFLINE
  •  
  • Local time:04:23 AM

Posted 03 August 2009 - 08:59 PM

A family member's computer recently started displaying the standard "Antivirus 200x" symptoms, including lower-right corner tray "warning" popups, browser redirects when trying to access anti-malware websites, and blocking the execution of anti-malware programs. Spybot and Malwarebytes refused to load at all at first, and then later after trying renaming the executable as well as installing SUPERAntiSpyware (which ran once but was not able to sufficiently clean out the infection), Vista started denying permissions to use all three programs. I was also able to run hijackthis once, but it crashed when i tried to save a log file and I lost permissions with it like the others.

I tried disabling UAC as well as going into the properties of the executables to restore permissions, neither of which yielded results. Unfortunately I am unable to provide a DDS log because, although the tool will run, it hangs for upwards of an hour without producing any logs. Switching to safe mode fails to resolve any of these roadblocks to disinfection. Strangely, I haven't seen any popups since a few days ago even though I've been working on the machine. Any help would be greatly appreciated.

Edited by adius, 03 August 2009 - 08:59 PM.


BC AdBot (Login to Remove)

 


m

#2 Orange Blossom

Orange Blossom

    OBleepin Investigator


  • Moderator
  • 36,693 posts
  • OFFLINE
  •  
  • Gender:Not Telling
  • Location:Bloomington, IN
  • Local time:04:23 AM

Posted 03 August 2009 - 10:08 PM

As no logs have been posted, I am shifting this topic from the specialized HiJack This forum to the Am I Infected forum.

==>PLEASE DO NOT NOW POST LOGS<== unless a log is specifically requested.
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

#3 Budapest

Budapest

    Bleepin' Cynic


  • Moderator
  • 23,570 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:07:23 PM

Posted 03 August 2009 - 10:13 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

#4 adius

adius
  • Topic Starter

  • Members
  • 3 posts
  • OFFLINE
  •  
  • Local time:04:23 AM

Posted 04 August 2009 - 01:07 PM

I was able to run an Express Scan with CureIt using your instructions, and found a number of trojans and rootkits and quarantined or deleted them. Unfortunately the program crashes in the middle of any complete scan I try to run, even BSODing with a IRQL_NOT_LESS_OR_EQUAL error on one occasion. The log of the scan that found the infections seems to be lost, and now any express scan I run finds no infection, even after a restart.

The only infection I remember the name of was NT_rootkit. I'm hesitant to try visiting the websites that were blocked for fear of triggering one of the malware scripts. I do have a log of one of the later express scans that found nothing, but it's very long and it wasn't created using the method in the instructions (that button is greyed out, I'm guessing because it thinks there's no malware to report), so just let me know if you want me to post it.

At this point I'm almost hoping its the malware causing the program crashes and not hard disk corruption of some sort.

Edited by adius, 04 August 2009 - 01:09 PM.


#5 adius

adius
  • Topic Starter

  • Members
  • 3 posts
  • OFFLINE
  •  
  • Local time:04:23 AM

Posted 04 August 2009 - 04:09 PM

Thanks for your help Budapest, but in the interest of time I've decided to go the Backup/Flatten/Reinstall route to resolve this. Not to say you haven't been quick to respond - I was actually surprised at how fast I was able to start getting help given the volume of posts on this forum, but I just think this will be easier considering how thoroughly the malware is blocking the cleaning software, along with all the issues with Vista permissions that seem like they're being hijacked and used against me.

#6 Budapest

Budapest

    Bleepin' Cynic


  • Moderator
  • 23,570 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:07:23 PM

Posted 04 August 2009 - 04:16 PM

No problem. Often reinstalling Windows is the quickest way to get over a serious infection. It's just that a lot of people don't feel confident enough to undertake a reinstall. Good luck.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users