Conficker virus statistics

However, the nature of the Internet makes it difficult to generate any statistics in almost any context based on unique IP addresses. Due to factors such as fast flux, NAT, dynamic addressing and so on, a straightforward statistic can mask huge variations either up or down. Does this give us any sort of clue? Not really. These figures are based on detections of these threats on machines owned by ESET customers: this suggests malware blocked at the point of entry, though a few of them might be machines that were infected before an ESET scanner was installed.

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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 For more information, visit the following Microsoft Web site:.

In this scenario, you must download the update from an uninfected computer, and then transfer the update file to the infected system. We recommend that you burn the update to a CD because the burned CD is not writable. Therefore, it cannot be infected. If a recordable CD drive is not available, a removable USB memory drive may be the only way to copy the update to the infected system.

If you use a removable drive, be aware that the malware can infect the drive with an Autorun. After you copy the update to the removable drive, make sure that you change the drive to read-only mode, if the option is available for your device. If read-only mode is available, it is typically enabled by using a physical switch on the device. Then, after you copy the update file to the infected computer, check the removable drive to see whether an Autorun. If it was, rename the Autorun.

Reset any Local Admin and Domain Admin passwords to use a new strong password. In the details pane, right-click the netsvcs entry, and then click Modify. B, the service name was random letters and was at the bottom of the list. With later variants, the service name may be anywhere in the list and may seem to be more legitimate.

To verify, compare the list in the "Services table" with a similar system that is known not to be infected. Note the name of the malware service. You will need this information later in this procedure. Delete the line that contains the reference to the malware service. Make sure that you leave a blank line feed under the last legitimate entry that is listed, and then click OK.