H3XAOperational intelligence
Live analytical pictureEvidence before assessment
TypeTechnique
External ID—
First seen2026-08-14
Last seen2026-08-14

Confidence

—

Adversaries may gather information about the victim's networks that can be used during targeting. Information about networks may include a variety of details, including administrative data (ex: IP ranges, domain names, etc.) as well as specifics regarding its topology and operations. 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 networks may also be exposed to adversaries via online or other accessible data sets (ex: [Search Open Technical Databases](https://attack.mitre.org/techniques/T1596)).(Citation: WHOIS)(Citation: DNS Dumpster)(Citation: Circl Passive DNS) Gathering this information may reveal opportunities for other forms of reconnaissance (ex: [Active Scanning](https://attack.mitre.org/techniques/T1595) or [Search Open Websites/Domains](https://attack.mitre.org/techniques/T1593)), 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: [Trusted Relationship](https://attack.mitre.org/techniques/T1199)).

11 recorded

Relationships

mapped-toTechnique
mitigatesMitigation
subtechnique-of
from DNS
Technique
subtechnique-ofTechnique
subtechnique-ofTechnique
subtechnique-ofTechnique
subtechnique-ofTechnique
subtechnique-ofTechnique
uses
from HAFNIUM
Group
usesGroup
usesGroup
4 external

References

mitre-attack
T1590
open
Circl Passive DNS
https://www.circl.lu/services/passive-dns/
open
DNS Dumpster
https://dnsdumpster.com/
open
WHOIS
https://who.is/
open