Acquire Infrastructure: DNS Server
Other sub-techniques of Acquire Infrastructure (7)
Adversaries may set up their own Domain Name System (DNS) servers that can be used during targeting. During post-compromise activity, adversaries may utilize DNS traffic for various tasks, including for Command and Control (ex: Application Layer Protocol). Instead of hijacking existing DNS servers, adversaries may opt to configure and run their own DNS servers in support of operations. By running their own DNS servers, adversaries can have more control over how they administer server-side DNS C2 traffic (DNS). With control over a DNS server, adversaries can configure DNS applications to provide conditional responses to malware and, generally, have more flexibility in the structure of the DNS-based C2 channel.(Citation: Unit42 DNS Mar 2019)
Procedure Examples |
|
| Name | Description |
|---|---|
| Axiom |
Axiom has acquired dynamic DNS services for use in the targeting of intended victims.(Citation: Novetta-Axiom) |
| HEXANE |
HEXANE has set up custom DNS servers to send commands to compromised hosts via TXT records.(Citation: Zscaler Lyceum DnsSystem June 2022) |
Mitigations |
|
| Mitigation | Description |
|---|---|
| Pre-compromise |
This category is used for any applicable mitigation activities that apply to techniques occurring before an adversary gains Initial Access, such as Reconnaissance and Resource Development techniques. |
Detection
Much of this activity will take place outside the visibility of the target organization, making detection of this behavior difficult. Detection efforts may be focused on related stages of the adversary lifecycle, such as during Command and Control.
References
- Hinchliffe, A. (2019, March 15). DNS Tunneling: how DNS can be (ab)used by malicious actors. Retrieved October 3, 2020.
- Novetta. (n.d.). Operation SMN: Axiom Threat Actor Group Report. Retrieved November 12, 2014.
- Shivtarkar, N. and Kumar, A. (2022, June 9). Lyceum .NET DNS Backdoor. Retrieved June 23, 2022.
Связанные риски
Каталоги
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