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 analyze data from local host files (ex: <code>C:\Windows\System32\Drivers\etc\hosts</code> or <code>/etc/hosts</code>) or other passive means (such as local Arp cache entries) in order to discover the presence of remote systems in an environment.
Adversaries may also target discovery of network infrastructure as well as leverage Network Device CLI commands on network devices to gather detailed information about systems within a network (e.g. <code>show cdp neighbors</code>, <code>show arp</code>).(Citation: US-CERT-TA18-106A)(Citation: CISA AR21-126A FIVEHANDS May 2021)
View in MITRE ATT&CK®| 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 | T1018 | Remote System Discovery | |
| action.malware.variety.Scan network | Enumerating the state of the 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
|
| 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
|