Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to gather as a precursor for Collection and to identify potential systems of interest for Lateral Movement. Networks often contain shared network drives and folders that enable users to access file directories on various systems across a network.
File sharing over a Windows network occurs over the SMB protocol. (Citation: Wikipedia Shared Resource) (Citation: TechNet Shared Folder) Net can be used to query a remote system for available shared drives using the <code>net view \\remotesystem</code> command. It can also be used to query shared drives on the local system using <code>net share</code>. For macOS, the <code>sharing -l</code> command lists all shared points used for smb services.
View in MITRE ATT&CK®| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| PR.PS-01.01 | Configuration baselines | Mitigates | T1135 | Network Share Discovery |
Comments
This diagnostic statement provides for securely configuring production systems. This includes hardening default configurations and making security-focused setting adjustments to reduce the attack surface, enforce best practices, and protect sensitive data thereby mitigating adversary exploitation.
References
|
| PR.PS-01.02 | Least functionality | Mitigates | T1135 | Network Share Discovery |
Comments
This diagnostic statement provides for limiting unnecessary software, services, ports, protocols, etc. Ensuring systems only have installed and enabled what is essential for their operation reduces the attack surface and minimizes vulnerabilities, which mitigates a wide range of techniques.
References
|
| PR.PS-01.03 | Configuration deviation | Mitigates | T1135 | Network Share Discovery |
Comments
This diagnostic statement provides protection from Network Share Discovery through the implementation of security configuration baselines for OS, software, file integrity monitoring and imaging. Security baseline configuration of the Operating System and integrity checking can help protect against adversaries attempting to compromise and modify software and its configurations.
References
|
| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| CM-06 | Configuration Settings | mitigates | T1135 | Network Share Discovery | |
| CM-07 | Least Functionality | mitigates | T1135 | Network Share Discovery | |
| SI-04 | System Monitoring | mitigates | T1135 | Network Share Discovery |
| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| action.hacking.variety.Scan network | Enumerating the state of the network | related-to | T1135 | Network Share Discovery | |
| action.malware.variety.Scan network | Enumerating the state of the network | related-to | T1135 | Network Share Discovery |
| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| vpc_service_controls | VPC Service Controls | technique_scores | T1135 | Network Share Discovery |
Comments
VPC security perimeters can limit the impact from active scanning and lateral movement techniques used to exploit the target environment.
References
|