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Antivirus Action


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#1 lilypad82

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Posted 27 October 2010 - 11:28 PM

Hi,

I am not that great with understanding computers and virus' but I had the Antivirus action virus infect my laptop yesterday and I followed bleepingcomputer.com's spyware removal instructions (thanks heaps for that)and it seems everything is now working ok. But how do I know for sure that the virus is gone?? McAfee security never picked up the virus when it hit so when I do a scan using McAfee and it says my computer is safe and everything is ok, I'm not so sure I should believe it.

Also, I followed all of the instructions to remove the virus and the only part I couldn't exactly follow was at the end (step 19). For some reason I could not save the Hosts file download link in the C:\Windows\System32\Drivers\etc folder, the computer would only let me save it in my C:Users folder. Is this ok?

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#2 boopme

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Posted 27 October 2010 - 11:49 PM

Hello are you running XP or another?? This will help with the Hosta issue.

Let.s also do an online scan.


Please perform a scan with Eset Online Antiivirus Scanner.
This scan requires Internet Explorer to work. Vista/Windows 7 users need to run Internet Explorer as Administrator.
To do this, right-click on the IE icon in the Start Menu or Quick Launch Bar on the Taskbar and select Run As Administrator from the context menu.
  • Click the green Posted Image button.
  • Read the End User License Agreement and check the box:
  • Check Posted Image.
  • Click the Posted Image button.
  • Accept any security warnings from your browser.
  • Check Posted Image
  • Check Remove found threats and Scan potentially unwanted applications. (If given the option, choose "Quarantine" instead of delete.)
  • Click the Start button.
  • ESET will then download updates for itself, install itself, and begin scanning your computer.
  • If offered the option to get information or buy software at any point, just close the window.
  • The scan will take a while so be patient and do NOT use the computer while the scan is running. Keep all other programs and windows closed.
  • When the scan completes, push Posted Image
  • Push Posted Image, and save the file to your desktop as ESETScan.txt.
  • Push the Posted Image button, then Finish.
  • Copy and paste the contents of ESETScan.txt in your next reply.
Note: A log.txt file will also be created and automatically saved in the C:\Program Files\EsetOnlineScanner\ folder.
If you did not save the ESETScan log, click Posted Image > Run..., then type or copy and paste everything in the code box below into the Open dialogue box:

C:\Program Files\ESET\EsetOnlineScanner\log.txt
  • Click Ok and the scan results will open in Notepad.
  • Copy and paste the contents of log.txt in your next reply.
-- Some online scanners will detect existing anti-virus software and refuse to cooperate. You may have to disable the real-time protection components of your existing anti-virus and try running the scan again. If you do this, remember to turn them back on after you are finished.

NOTE: In some instances if no malware is found there will be no log produced.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#3 lilypad82

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Posted 27 October 2010 - 11:54 PM

Sorry, meant to say I have Windows Vista

#4 lilypad82

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Posted 28 October 2010 - 03:19 AM

Ok, I ran the scan and this is the contents of the ESETScan.txt

C:\Users\Amy\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\10\521840ca-7e325451 a variant of Java/TrojanDownloader.OpenStream.NAU trojan deleted - quarantined
C:\Users\Amy\Documents\Amy\LimeWire\letitrock(Disk 1).mp3 a variant of WMA/TrojanDownloader.GetCodec.gen trojan cleaned - quarantined

Before I click Finish, there is an option to delete quarantined files, should I delete them?

#5 boopme

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Posted 28 October 2010 - 09:25 AM

Yes they can go ..
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#6 lilypad82

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Posted 28 October 2010 - 07:52 PM

Thanks for your help. Do you think these viruses where apart of the Antivirus Action virus or seperate? And if I did have any traces left of the Antivirus Action virus it would have shown up on this scan?

Also, is it ok that my replacement hosts file is not in the C:\Windows\System32\Drivers\etc folder? I am not quite sure what that file does but assume it is important.

#7 boopme

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Posted 29 October 2010 - 11:13 AM

Hello, most likely the other way aroun.Someting else allowed the AA infection. This rogue is installed on your computer through computer infections and fake anti-malware scanners. When malware installs this infection it is commonly through exploit kits that attempt to install and execute files on your computer by exploiting a variety of exploits that may be available on your computer or through the software that you run. If an exploitable program is found it will then install and execute the Trojan that will ultimately download and install Antivirus Action on to your computer.

Simply put the Hosts file is a telephone book for only the poepls you want to call.

Read The Hosts File and what it can do for you

When using the Internet most people connect to web sites, ftp servers or other Internet servers by connecting to a domain name, as in www.bleepingcomputer.com. Internet applications, though, do not communicate via domain names, but rather using IP addresses, such as 192.168.1.1. Therefore when you type a domain name in your program that you wish to connect to, your application must first convert it to an IP address that it will use to connect to.

The way these hostnames are resolved to their mapped IP address is called Domain Name Resolution. On almost all operating systems whether they be Apple, Linux, Unix, Netware, or Windows the majority of resolutions from domain names to IP addresses are done through a procedure called DNS

There is another way to resolve domain names without using the Domain Name System, and that is by using your HOSTS file. Almost every operating system that communicates via TCP/IP, the standard of communication on the Internet, has a file called the HOSTS file. This file allows you to create mappings between domain names and IP addresses.

The HOSTS file is a text file that contains IP addresses separated by at least once space and then a domain name, with each entry on its own line.



Where does it show your HOSTS file??



Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware and save it to your desktop.
Download Link 1
Download Link 2MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
    For instructions with screenshots, please refer to the How to use Malwarebytes' Anti-Malware Guide.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

Troubleshoot Malwarebytes' Anti-Malware

Edited by boopme, 29 October 2010 - 11:15 AM.

How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#8 lilypad82

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Posted 29 October 2010 - 11:00 PM

When I first did a full scan with Malwarebytes' Anti-Malware and those two virus files were quarantined and removed, I couldn't save the hosts file in the folder you suggested so I saved it in my C:Users folder. I just tried to move the hosts file to the C:\Windows\System32\Drivers\etc folder and it worked so it is now where it should be.

I just performed another Malwarebytes' Anti-Malware quick scan (did the full scan last time) and this is the log:

Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org

Database version: 4962

Windows 6.0.6001 Service Pack 1
Internet Explorer 7.0.6001.18000

30/10/2010 2:50:18 PM
mbam-log-2010-10-30 (14-50-18).txt

Scan type: Quick scan
Objects scanned: 156029
Time elapsed: 14 minute(s), 48 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: 0

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:
(No malicious items detected)

So I have now done two malwarebytes scans (a full scan and a quick scan) and an ESET online scan so I should be fairly confident now that my laptop is virus free??

Thanks for all your help, this is an awesome website.

#9 boopme

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Posted 30 October 2010 - 09:20 AM

OK, this looks good. You are welcome!

Now you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been backed up, renamed and saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:
  • Go to Start > Programs > Accessories > System Tools and click "System Restore".
  • Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
  • Then use Disk Cleanup to remove all but the most recently created Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  • Click the "More Options" tab, then click the "Clean up" button under System Restore.
  • Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  • Click Yes, then click Ok.
  • Click Yes again when prompted with "Are you sure you want to perform these actions?"
  • Disk Cleanup will remove the files and close automatically.
Vista and Windows 7 users can refer to these links: Create a New Restore Point in Vista or Windows 7 and Disk Cleanup in Vista.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#10 lilypad82

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Posted 01 November 2010 - 07:56 PM

Thanks, I have now created a new restore point and done a disc cleanup :thumbsup:

#11 boopme

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Posted 01 November 2010 - 08:18 PM

Great and thank you for dropping by.


Tips to protect yourself against malware and reduce the potential for re-infection:Avoid gaming sites, pirated software, cracking tools, keygens, and peer-to-peer (P2P) file sharing programs. They are a security risk which can make your computer susceptible to a smörgåsbord of malware infections, remote attacks, exposure of personal information, and identity theft. Many malicious worms and Trojans spread across P2P file sharing networks, gaming and underground sites. Users visiting such pages may see innocuous-looking banner ads containing code which can trigger pop-up ads and malicious Flash ads that install viruses, Trojans and spyware. Ads are a target for hackers because they offer a stealthy way to distribute malware to a wide range of Internet users. The best way to reduce the risk of infection is to avoid these types of web sites and not use any P2P applications. Read P2P Software User Advisories and Risks of File-Sharing Technology.

Keeping Autorun enabled on USB and other removable drives has become a significant security risk due to the increasing number of malware variants that can infect them and transfer the infection to your computer. To learn more about this risk, please read:
  • USB-Based Malware Attacks.
  • When is AUTORUN.INF really an AUTORUN.INF?.
  • Please disable Autorun asap!.
{Thanks quietman7}
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook




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