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FakeAlert infection


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#1 Cheredanine

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Posted 13 July 2010 - 05:48 AM

Hello, one and all.
ok I am an IT pro, in the past DOS and early NT4 days I was invovled in the AV industry (to give context)

the kids home PC (laptop) has a virus
specifically it looks like a varriant of FakeAlert -Antivir
not one to give up the fight, I am trying to remove it (I should point out I am not at home ATM, so not at the machine)

the payload is consistent with FakeAlert so far (warning messages all over the shop, blocked access to executables, blocked access to internet using local proxy)

Sooo gone down the usual route (process kill, registry edit, file removal)

HOWEVER.
The processes, files and reg entries are not showing. The existing documentation on this variant states filenames are based on Antivir, however, no sign of such files in a search of the hard drive, these fiendishly clever virus chaps must have hit on the cunning plan of renaming the damn exes and registry entries.

The internet block is preventing from downloading any utilities that would help with removal

only other machine is PGP encrypted so cant connect and copy

sooo later today I am going to try and find the overide for proxy in the registry which must, I gues, be there, and hope I can reload the registry hive and access some utilities before the Virus closes the hole I create

however, any ideals/suggest would be welcome

thanks

Hmm edit:
ok forgot, Windows XP, latest updates

and having discussed the problem with my 12YO in front of the offending hardware, it would appeaer to be Antivir Solution Pro, which at the moment seems a very popular search!

additional edit: eep, looks like the malware took out the safe boot registry entries

Edited by Cheredanine, 13 July 2010 - 09:57 AM.


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#2 boopme

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Posted 13 July 2010 - 10:56 AM

Please click Start > Run, type inetcpl.cpl in the runbox and press enter.

Click the Connections tab and click the LAN settings option.

Verify if "Use a proxy..." is checked, if so, UNcheck it and click OK/OK to exit.

Now check if the internet is working again.


now run NcAfee FakeAlert Stinger


Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware (v1.46) and save it to your desktop.
Before you save it rename it to say zztoy.exe


alternate download link 1
alternate download link 2
MBAM 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.
  • 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.
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#3 Cheredanine

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Posted 13 July 2010 - 12:28 PM

Didnt work, the proxy re-asserts its self when you exit the control pannel,
I did some digging and found a proxy override that the virus had inserted in the registry, removed it and various other registry entrys it had made, renamed the directry with the virus executable in, rebooted and now am downloading stinger
In summary this version:

sets up a local proxy to block internet appart from requests to buy it and a few dubious sites it throws up at random
breaks file associations and stops exes, cpl, regedit, task manager etc from running
blows safe boot
I havent checked the food in the fridge yet but I suspect it made some of it go out of date

if you want a list of the reg changes I nuked I wrote them down, let me know

Edit: stinger didnt report anything found, even thought the exe is still there, just renamed.

mbam now updating,

I suspect afterwards I am going to have to rebuild the safeboot registry entries and may have some trouble with file associations

Edited by Cheredanine, 13 July 2010 - 01:18 PM.


#4 boopme

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Posted 13 July 2010 - 09:35 PM

Nothing from MBAM?
If you could.
>>>> Download this file and doubleclick on it to run it. Allow the information to be merged with the registry.

RKill....

Download and Run RKill
  • Please download RKill by Grinler from one of the 4 links below and save it to your desktop.

    Link 1
    Link 2
    Link 3
    Link 4

  • Before we begin, you should disable your anti-malware softwares you have installed so they do not interfere RKill running as some anti-malware softwares detect RKill as malicious. Please refer to this page if you are not sure how.
  • Double-click on Rkill on your desktop to run it. (If you are using Windows Vista, please right-click on it and select Run As Administrator)
  • A black screen will appear and then disappear. Please do not worry, that is normal. This means that the tool has been successfully executed.
  • If nothing happens or if the tool does not run, please let me know in your next reply
Do not reboot your computer after running rkill as the malware programs will start again. Or if rebooting is required run it again.

^^

If you get an alert that Rkill is "infected", ignore it. The alert is just a fake warning given by the rogue software which tries to terminate programs that try to remove it. If you see such a warning, leave the warning on the screen and then run Rkill again. By not closing the warning, this sometimes allows you to bypass the malware's attempt to protect itself so that Rkill can perform its routine.


Try this with RKill.... download iExplore.exe or eXplorer.exe, which are renamed copies of rkill.com, and try them instead.

Do not reboot your computer after running rkill as the malware programs will start again.

Rerun MBAM (MalwareBytes) like this:

Open MBAM in normal mode and click Update tab, select Check for Updates,when done
click Scanner tab,select Quick scan and scan (normal mode).
After scan click Remove Selected, Post new scan log and Reboot into normal mode.
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

#5 Cheredanine

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Posted 14 July 2010 - 02:46 AM

Mbam found and removed the virus, I ran a couple of registry optimisers and all seems fine, AVG reporting clean. I will add the registry entries this evening to this thread. If you want anything else run just shout, otherwise thanks for the help :thumbsup:

#6 boopme

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Posted 14 July 2010 - 10:11 AM

Ok great ,just to mop up.... 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.
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#7 boopme

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Posted 14 July 2010 - 12:34 PM

Sorry to double post but about the registry cleaners...
Bleeping Computer DOES NOT recommend the use of registry cleaners/optimizers for several reasons:

• Registry cleaners are extremely powerful applications that can damage the registry by using aggressive cleaning routines and cause your computer to become unbootable.

The Windows registry is a central repository (database) for storing configuration data, user settings and machine-dependent settings, and options for the operating system. It contains information and settings for all hardware, software, users, and preferences. Whenever a user makes changes to settings, file associations, system policies, or installed software, the changes are reflected and stored in this repository. The registry is a crucial component because it is where Windows "remembers" all this information, how it works together, how Windows boots the system and what files it uses when it does. The registry is also a vulnerable subsystem, in that relatively small changes done incorrectly can render the system inoperable. For a more detailed explanation, read Understanding The Registry.

• Not all registry cleaners are created equal. There are a number of them available but they do not all work entirely the same way. Each vendor uses different criteria as to what constitutes a "bad entry". One cleaner may find entries on your system that will not cause problems when removed, another may not find the same entries, and still another may want to remove entries required for a program to work.

• Not all registry cleaners create a backup of the registry before making changes. If the changes prevent the system from booting up, then there is no backup available to restore it in order to regain functionality. A backup of the registry is essential BEFORE making any changes to the registry.

• Improperly removing registry entries can hamper malware disinfection and make the removal process more difficult if your computer becomes infected. For example, removing malware related registry entries before the infection is properly identified can contribute to system instability and even make the malware undetectable to removal tools.

• The usefulness of cleaning the registry is highly overrated and can be dangerous. In most cases, using a cleaner to remove obsolete, invalid, and erroneous entries does not affect system performance but it can result in "unpredictable results".

Unless you have a particular problem that requires a registry edit to correct it, I would suggest you leave the registry alone. Using registry cleaning tools unnecessarily or incorrectly could lead to disastrous effects on your operating system such as preventing it from ever starting again. For routine use, the benefits to your computer are negligible while the potential risks are great.
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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