t1590-002-dns

name	T1590.002_dns
description	Adversaries may gather information about the victim's DNS that can be used during targeting.
category	information-gathering
version	18.1
author	cyberstrike-official
tags	["mitre-attack","enterprise","t1590.002","reconnaissance","pre","sub-technique"]
technique_id	T1590.002
tactic	reconnaissance
all_tactics	["reconnaissance"]
platforms	["PRE"]
mitre_url	https://attack.mitre.org/techniques/T1590/002
tech_stack	["pre"]
cwe_ids	["CWE-200"]
chains_with	["T1590","T1590.001","T1590.003","T1590.004","T1590.005","T1590.006"]
prerequisites	["T1590"]
severity_boost	{"T1590":"Chain with T1590 for deeper attack path","T1590.001":"Chain with T1590.001 for deeper attack path","T1590.003":"Chain with T1590.003 for deeper attack path"}

T1590.002 DNS

Sub-technique of: T1590

High-Level Description

Adversaries may gather information about the victim's DNS that can be used during targeting. DNS information may include a variety of details, including registered name servers as well as records that outline addressing for a target’s subdomains, mail servers, and other hosts. DNS MX, TXT, and SPF records may also reveal the use of third party cloud and SaaS providers, such as Office 365, G Suite, Salesforce, or Zendesk.

Adversaries may gather this information in various ways, such as querying or otherwise collecting details via DNS/Passive DNS. DNS information may also be exposed to adversaries via online or other accessible data sets (ex: Search Open Technical Databases). Gathering this information may reveal opportunities for other forms of reconnaissance (ex: Search Open Technical Databases, Search Open Websites/Domains, or Active Scanning), establishing operational resources (ex: Acquire Infrastructure or Compromise Infrastructure), and/or initial access (ex: External Remote Services).

Adversaries may also use DNS zone transfer (DNS query type AXFR) to collect all records from a misconfigured DNS server.

Kill Chain Phase

• Reconnaissance (TA0043)

Platforms: PRE

What to Check

• Identify if DNS technique is applicable to target environment
• Check PRE systems for indicators of DNS
• Verify mitigations are bypassed or absent (1 known mitigations)
• Assess detection coverage (1 detection strategies)

How to Test

Manual Testing

1. Identify Attack Surface: Determine if the target environment is susceptible to DNS by examining the target platforms (PRE).

2. Assess Existing Defenses: Review whether mitigations for T1590.002 are in place. If defenses are absent or misconfigured, this technique may be exploitable.

3. Execute Test: Use tools and methods described in the MITRE ATT&CK page and external references below.

Note: No Atomic Red Team tests available for this technique. See Atomic Red Team GitHub for updates.

Remediation Guide

M1054 Software Configuration