Adversaries may buy, lease, or rent infrastructure that can be used during targeting. A wide variety of infrastructure exists for hosting and orchestrating adversary operations. Infrastructure solutions include physical or cloud servers, domains, and third-party web services. Additionally, botnets are available for rent or purchase.
Use of these infrastructure solutions allows an adversary to stage, launch, and execute an operation. Solutions may help adversary operations blend in with traffic that is seen as normal, such as contact to third-party web services. Depending on the implementation, adversaries may use infrastructure that makes it difficult to physically tie back to them as well as utilize infrastructure that can be rapidly provisioned, modified, and shut down.
This technique cannot be easily mitigated with preventive controls since it is based on behaviors performed outside of the scope of enterprise defenses and controls.
|ID||Data Source||Data Component|
|DS0038||Domain Name||Active DNS|
|DS0035||Internet Scan||Response Content|
Consider use of services that may aid in tracking of newly acquired infrastructure, such as WHOIS databases for domain registration information.
Once adversaries have provisioned infrastructure (ex: a server for use in command and control), internet scans may help proactively discover adversary acquired infrastructure. Consider looking for identifiable patterns such as services listening, certificates in use, SSL/TLS negotiation features, or other response artifacts associated with adversary C2 software.
Detection efforts may be focused on related stages of the adversary lifecycle, such as during Command and Control.