type: attack-pattern
spec_version: 2.1
id: attack-pattern--e3b168bd-fcd7-439e-9382-2e6c2f63514d
created: 2020-10-02T15:46:24.670Z
created_by_ref: identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5
revoked: no
external_references: source_name: mitre-attack
url: https://attack.mitre.org/techniques/T1590/001
external_id: T1590.001
source_name: Circl Passive DNS
description: CIRCL Computer Incident Response Center. (n.d.). Passive DNS. Retrieved October 20, 2020.
url: https://www.circl.lu/services/passive-dns/
source_name: Azure Active Directory Reconnaisance
description: Dr. Nestori Syynimaa. (2020, June 13). Just looking: Azure Active Directory reconnaissance as an outsider. Retrieved May 27, 2022.
url: https://o365blog.com/post/just-looking/
source_name: DNS Dumpster
description: Hacker Target. (n.d.). DNS Dumpster. Retrieved October 20, 2020.
url: https://dnsdumpster.com/
source_name: Office 265 Azure Domain Availability
description: Microsoft. (2017, January 23). (Cloud) Tip of the Day: Advanced way to check domain availability for Office 365 and Azure. Retrieved May 27, 2022.
url: https://docs.microsoft.com/en-us/archive/blogs/tip_of_the_day/cloud-tip-of-the-day-advanced-way-to-check-domain-availability-for-office-365-and-azure
source_name: WHOIS
description: NTT America. (n.d.). Whois Lookup. Retrieved November 17, 2024.
url: https://who.is/
object_marking_refs: marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168
modified: 2025-10-24T17:49:31.581Z
name: Domain Properties
description: Adversaries may gather information about the victim's network domain(s) that can be used during targeting. Information about domains and their properties may include a variety of details, including what domain(s) the victim owns as well as administrative data (ex: name, registrar, etc.) and more directly actionable information such as contacts (email addresses and phone numbers), business addresses, and name servers.

Adversaries may gather this information in various ways, such as direct collection actions via [Active Scanning](https://attack.mitre.org/techniques/T1595) or [Phishing for Information](https://attack.mitre.org/techniques/T1598). Information about victim domains and their properties may also be exposed to adversaries via online or other accessible data sets (ex: [WHOIS](https://attack.mitre.org/techniques/T1596/002)).(Citation: WHOIS)(Citation: DNS Dumpster)(Citation: Circl Passive DNS) Where third-party cloud providers are in use, this information may also be exposed through publicly available API endpoints, such as GetUserRealm and autodiscover in Office 365 environments.(Citation: Azure Active Directory Reconnaisance)(Citation: Office 265 Azure Domain Availability) Gathering this information may reveal opportunities for other forms of reconnaissance (ex: [Search Open Technical Databases](https://attack.mitre.org/techniques/T1596), [Search Open Websites/Domains](https://attack.mitre.org/techniques/T1593), or [Phishing for Information](https://attack.mitre.org/techniques/T1598)), establishing operational resources (ex: [Acquire Infrastructure](https://attack.mitre.org/techniques/T1583) or [Compromise Infrastructure](https://attack.mitre.org/techniques/T1584)), and/or initial access (ex: [Phishing](https://attack.mitre.org/techniques/T1566)).
kill_chain_phases: kill_chain_name: mitre-attack
phase_name: reconnaissance
x_mitre_attack_spec_version: 3.2.0
x_mitre_contributors: Jannie Li, Microsoft Threat Intelligence Center (MSTIC)
x_mitre_deprecated: no
x_mitre_domains: enterprise-attack
x_mitre_is_subtechnique: yes
x_mitre_modified_by_ref: identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5
x_mitre_platforms: PRE
x_mitre_version: 1.1