T1071.004: T1071.004

216.73.216.204

View on MITRE ATT&CK The MITRE Corporation · Published 15/03/2020 17:27 · Modified 27/03/2026 01:08

Essential information

MITRE technique ID: T1071.004
Confidence: 100/100
Revoked: No
Published: 15/03/2020 17:27
Modified: 27/03/2026 01:08
Author / Source: The MITRE Corporation

Aliases

DNS

Platforms

windows macos linux Network Devices ESXi

Description

Adversaries may communicate using the Domain Name System (DNS) application layer protocol to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server. The DNS protocol serves an administrative function in computer networking and thus may be very common in environments. DNS traffic may also be allowed even before network authentication is completed. DNS packets contain many fields and headers in which data can be concealed. Often known as DNS tunneling, adversaries may abuse DNS to communicate with systems under their control within a victim network while also mimicking normal, expected traffic.(Citation: PAN DNS Tunneling)(Citation: Medium DnsTunneling) DNS beaconing may be used to send commands to remote systems via DNS queries. A DNS beacon is created by tunneling DNS traffic (i.e. [Protocol Tunneling](https://attack.mitre.org/techniques/T1572)). The commands may be embedded into different DNS records, for example, TXT or A records.(Citation: OilRig Uses Updated BONDUPDATER to Target Middle Eastern Government) DNS beacons may be difficult to detect because the beacons infrequently communicate with infected devices.(Citation: DNS Beacons) Infrequent communication conceals the malicious DNS traffic with normal DNS traffic.

Kill chain phases

Kill chain	Phase
mitre-attack	command-and-control