Conficker microsoft scan

This procedure does not remove the Conficker malware from the system. This procedure only stops the spread of the malware. You should use an antivirus product to remove the Conficker malware from the system.

You may be unable to correctly install applications, service packs, or other updates while the permission changes that are recommended in the following steps are in place. Make sure that you change the permissions back to default settings after you clean the system. Create a new Group Policy object GPO that applies to all computers in a specific organizational unit OU , site, or domain, as required in your environment. To do this, follow these steps:. Right-click Registry , and then click Add Key.

In the Select Registry Key dialog box, expand Machine , and then move to the following folder:. In the dialog box that opens, click to clear the Full Control check box for both Administrators and System. In the Add Object dialog box, click Replace existing permissions on all subkeys with inheritable permissions. This prevents the Conficker malware from creating the Scheduled Tasks that can reinfect the system.

Right-click File System , and then click Add File. Make sure that Tasks is highlighted and listed in the Folder dialog box. In the dialog box that opens, click to clear the check boxes for Full Control , Modify , and Write for both Administrators and System.

Set AutoPlay Autorun features to disabled. This keeps the Conficker malware from spreading by using the AutoPlay features that are built into Windows. NoteDepending on the version of Windows that you are using, there are different updates that you must have installed to correctly disable the Autorun functionality:. To disable the Autorun functionality in Windows Vista or in Windows Server , you must have security update installed described in security bulletin MS To disable the Autorun functionality in Windows XP, in Windows Server , or in Windows , you must have security update , update , or update installed.

To set AutoPlay Autorun features to disabled, follow these steps:. In the Turn off Autoplay dialog box, click Enabled.

Allow for enough time for Group Policy settings to update to all computers. Generally, Group Policy replication takes five minutes to replicate to each domain controller, and then 90 minutes to replicate to the rest of the systems. A couple hours should be enough. However, more time may be required, depending on the environment.

After the Group Policy settings have propagated, clean the systems of malware. If your antivirus software does not detect Conficker, you can use the Microsoft Safety Scanner to clean the malware. Note The Microsoft Safety Scanner does not prevent reinfection because it is not a real-time antivirus program. This tool is available as a component of the Microsoft Desktop Optimization Pack 6.

These manual steps are not required any longer and should only be used if you have no antivirus software to remove the Conficker virus. The following detailed steps can help you manually remove Conficker from a system:.

Log on to the system by using a local account. Important Do not log on to the system by using a Domain account, if it is possible. Especially, do not log on by using a Domain Admin account.

The malware impersonates the logged on user and accesses network resources by using the logged on user credentials. This behavior allows for the malware to spread. Stop the Server service. This removes the Admin shares from the system so that the malware cannot spread by using this method. Note The Server service should only be disabled temporarily while you clean up the malware in your environment.

This is especially true on production servers because this step will affect network resource availability. As soon as the environment is cleaned up, the Server service can be re-enabled. Select Disabled in the Startup type box.

ImportantThis section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:.

Click Start , type regedit in the Start Search box, and then click regedit. In the Value data box, type 4, and then click OK. Exit Registry Editor, and then restart the computer.

Note The Task Scheduler service should only be disabled temporarily while you clean up the malware in your environment. This is especially true on Windows Vista and Windows Server because this step will affect various built-in Scheduled Tasks. As soon as the environment is cleaned up, re-enable the Server service.

Download and manually install security update MS Since then, it has infected thousands of business networks. Unpatched computers are most at risk of infection, with Conficker exploiting these computers by overcoming weak passwords and propagating itself through unprotected USB storage devices. Simply download and run the program, register your email address, choose your settings, and click the "OK" button to begin a Conficker virus scan. Behavioral Scanning can reveal and remove virus infections in programs and binaries that look and act like malware by seeking structure anomalies, impersonation, tampering, reputation, origin and relation to other memory, file, and registry objects.

Learn more about how Conficker spreads. Secure your computer with the most advanced virus removal protection technology on the market for free.

All rights reserved. Products Products for Business For Business. Note that the infiltration can spread through shared folders. Type your old password, type your new password, type your new password again to confirm it, and then press ENTER. If you don't have an ESET product 3. Update your virus signature database. To verify that the stand-alone cleaner removed the Conficker threat, rerun the stand-alone cleaner and then run a scan with your ESET product.

After successfully running the ESET stand-alone cleaner, we recommend that you read the following Microsoft article for information about important security patches and recommended group changes:. For maximum protection against future threats, make sure your operating system is patched according to Microsoft's recommendations and that your ESET product is up to date. Patches are not needed for Windows 7 and Server The patches below are not necessary for Windows 7 or Server r2, as the exploit used by Conficker does not exist on these operating systems.

Last Updated: Mar 23, Was this information helpful? Additional resources. User Guides. ESET Forum. YouTube videos. Need further assistance? More Information. Support News.