T1071.004 DNS Mappings

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)

View in MITRE ATT&CK®

NIST 800-53 Mappings

VERIS Mappings

Capability ID Capability Description Mapping Type ATT&CK ID ATT&CK Name Notes
action.malware.variety.C2 Command and control (C2) related-to T1071.004 Application Layer Protocol: DNS
action.malware.variety.Unknown Unknown related-to T1071.004 Application Layer Protocol: DNS

AWS Mappings

Capability ID Capability Description Mapping Type ATT&CK ID ATT&CK Name Notes
amazon_guardduty Amazon GuardDuty technique_scores T1071.004 DNS
Comments
GuardDuty flags events matching the following finding types that relate to adversaries attempting to communicate using application layer protocols to avoid detection. UnauthorizedAccess:EC2/MaliciousIPCaller.Custom Backdoor:EC2/C&CActivity.B Backdoor:EC2/C&CActivity.B!DNS Trojan:EC2/BlackholeTraffic Trojan:EC2/BlackholeTraffic!DNS Trojan:EC2/DropPoint Trojan:EC2/DropPoint!DNS Backdoor:EC2/C&CActivity.B Impact:EC2/MaliciousDomainRequest.Reputation Impact:EC2/SuspiciousDomainRequest.Reputation
References
    aws_network_firewall AWS Network Firewall technique_scores T1071.004 DNS
    Comments
    AWS Network Firewall has the ability to pass, drop, or alert on traffic based on the network protocol as well as perform deep packet inspection on the payload. This functionality can be used to block malicious or unwanted traffic leveraging application layer protocols. As a result, this mapping is given a score of Significant.
    References