Compromise Infrastructure: DNS Server

Before compromising a victim, adversaries may compromise third-party DNS servers that can be used during targeting. During post-compromise activity, adversaries may utilize DNS traffic for various tasks, including for Command and Control (ex: Application Layer Protocol). Instead of setting up their own DNS servers, adversaries may compromise third-party DNS servers in support of operations.

By compromising DNS servers, adversaries can alter DNS records. Such control can allow for redirection of an organization's traffic, facilitating Collection and Credential Access efforts for the adversary.[1][2] Adversaries may also be able to silently create subdomains pointed at malicious servers without tipping off the actual owner of the DNS server.[3][4]

ID: T1584.002
Sub-technique of:  T1584
Tactic: Resource Development
Platforms: PRE
Version: 1.0
Created: 01 October 2020
Last Modified: 19 October 2020

Mitigations

Mitigation Description
Pre-compromise

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.

Detection

Much of this activity will take place outside the visibility of the target organization, making detection of this behavior difficult. Detection efforts may be focused on related stages of the adversary lifecycle, such as during Command and Control.

References