Acquire Infrastructure: DNS-сервер
Other sub-techniques of Acquire Infrastructure (8)
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)
Примеры процедур |
|
Название | Описание |
---|---|
Sea Turtle |
Sea Turtle built adversary-in-the-middle DNS servers to impersonate legitimate services that were later used to capture credentials.(Citation: Talos Sea Turtle 2019_2)(Citation: Talos Sea Turtle 2019) |
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) |
Контрмеры |
|
Контрмера | Описание |
---|---|
Pre-compromise |
Pre-compromise mitigations involve proactive measures and defenses implemented to prevent adversaries from successfully identifying and exploiting weaknesses during the Reconnaissance and Resource Development phases of an attack. These activities focus on reducing an organization's attack surface, identify adversarial preparation efforts, and increase the difficulty for attackers to conduct successful operations. This mitigation can be implemented through the following measures: Limit Information Exposure: - Regularly audit and sanitize publicly available data, including job posts, websites, and social media. - Use tools like OSINT monitoring platforms (e.g., SpiderFoot, Recon-ng) to identify leaked information. Protect Domain and DNS Infrastructure: - Enable DNSSEC and use WHOIS privacy protection. - Monitor for domain hijacking or lookalike domains using services like RiskIQ or DomainTools. External Monitoring: - Use tools like Shodan, Censys to monitor your external attack surface. - Deploy external vulnerability scanners to proactively address weaknesses. Threat Intelligence: - Leverage platforms like MISP, Recorded Future, or Anomali to track adversarial infrastructure, tools, and activity. Content and Email Protections: - Use email security solutions like Proofpoint, Microsoft Defender for Office 365, or Mimecast. - Enforce SPF/DKIM/DMARC policies to protect against email spoofing. Training and Awareness: - Educate employees on identifying phishing attempts, securing their social media, and avoiding information leaks. |
Обнаружение
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.
Ссылки
- Hinchliffe, A. (2019, March 15). DNS Tunneling: how DNS can be (ab)used by malicious actors. Retrieved October 3, 2020.
- Paul Rascagneres. (2019, July 9). Sea Turtle keeps on swimming, finds new victims, DNS hijacking techniques. Retrieved November 20, 2024.
- Cisco Talos. (2019, April 17). Sea Turtle: DNS Hijacking Abuses Trust In Core Internet Service. Retrieved November 20, 2024.
- 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
Мы используем cookie-файлы, чтобы получить статистику, которая помогает нам улучшить сервис для вас с целью персонализации сервисов и предложений. Вы может прочитать подробнее о cookie-файлах или изменить настройки браузера. Продолжая пользоваться сайтом, вы даёте согласие на использование ваших cookie-файлов и соглашаетесь с Политикой обработки персональных данных.