Adversaries may attempt to get a listing of other systems by IP address, hostname, or other logical identifier on a network that may be used for Lateral Movement from the current system. Functionality could exist within remote access tools to enable this, but utilities available on the operating system could also be used such as Ping or <code>net view</code> using Net. Adversaries may also use local host files (ex: <code>C:\Windows\System32\Drivers\etc\hosts</code> or <code>/etc/hosts</code>) in order to discover the hostname to IP address mappings of remote systems.
Specific to macOS, the <code>bonjour</code> protocol exists to discover additional Mac-based systems within the same broadcast domain.
View in MITRE ATT&CK®| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| action.malware.variety.Scan network | Scan or footprint network | related-to | T1018 | Remote System Discovery | |
| amazon_virtual_private_cloud | Amazon Virtual Private Cloud | technique_scores | T1018 | Remote System Discovery |
Comments
VPC security groups and network access control lists (NACLs) can filter network traffic and therefore can be effective for mitigating network based remote system discovery. Other remote system discovery methods such as discovering hosts from local host files are not mitigated resulting in Partial coverage score and an overall score of Partial.
References
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| aws_network_firewall | AWS Network Firewall | technique_scores | T1018 | Remote System Discovery |
Comments
AWS Network Firewall has the ability to pass, drop, or alert on traffic based on the network protocol as well as perform deep packet inspection on the payload. This functionality can be used to block adversaries from discovering endpoints behind the firewall. This mapping is given a score of Partial because it does not protect against discovering endpoints within the network and behind the firewall.
References
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