These shares, which are enabled by default, provide administrators and software the functionality to remotely manage hosts. Only Windows hides these shares from being displayed. Accessing the administrative shares requires administrative privileges. While useful under normal operations, the administrative shares can be problematic when there is malware or an attacker on the network as the shares can be leveraged for lateral movement. Malware with worming capabilities, such as Emotet and Trickbot, will steal credentials and also use brute-force to gain access to other systems on the network.
This technique relies on the ability to access administrative shares. For most networks, external access via the SMB protocol is blocked by the firewall. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information. The Win Agobot program is only an example. Malicious programs become obsolete as antivirus vendors discover them and add them to their virus definitions.
However, malicious users frequently develop new programs and variants to avoid detection by antivirus software. This 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: How to back up and restore the registry in Windows.
If these values do not exist, you do not have to create them because the default behavior is to automatically create the administrative shares. Restart the computer. After the computer restarts, verify that the administrative shares are active. To examine the shares, use the net share command. To do it, follow these steps:. If the administrative shares are not listed, the computer may be running a malicious program that removes the shares during startup.
To look for malicious programs, follow these steps:. Use the latest virus definitions to run a complete antivirus scan on the computer. You can use your antivirus software or use one of several free virus-scanning services that are available on the Internet. See the "More Information" section for links to virus definition updates and to free online scans from antivirus software vendors.
If you suspect that a computer is infected with malicious code, we recommend that you remove it from the network as soon as possible. We recommend this because a malicious user may be using the infected computer to start Distributed Denial of Service DDoS attacks, to send unsolicited commercial e-mail, or to share illegal copies of software, music, and movies.
If the antivirus scan identifies a malicious program on the system, use the antivirus vendor's removal instructions. Additionally, review the threat assessment and the technical details about the program on your antivirus vendor's Web site. Copy files with pauses. Copy to multiple folders. Quick Fix for Mac Filenames. Diaplaying Mac Filenames. Finding Mac Filenames. Inline Editing of Mac Filenames. Technical - Mac Mac Filenames. Add folder parent names.
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