Compromise Infrastructure: DNS-сервер
Other sub-techniques of Compromise Infrastructure (7)
Adversaries may compromise third-party 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 setting up their own DNS servers, adversaries may compromise third-party DNS servers in support of operations. By compromising DNS servers, adversaries can alter DNS records. Such control can allow for redirection of an organization's traffic, facilitating Collection and Credential Access efforts for the adversary.(Citation: Talos DNSpionage Nov 2018)(Citation: FireEye DNS Hijack 2019) Additionally, adversaries may leverage such control in conjunction with Digital Certificates to redirect traffic to adversary-controlled infrastructure, mimicking normal trusted network communications.(Citation: FireEye DNS Hijack 2019)(Citation: Crowdstrike DNS Hijack 2019) Adversaries may also be able to silently create subdomains pointed at malicious servers without tipping off the actual owner of the DNS server.(Citation: CiscoAngler)(Citation: Proofpoint Domain Shadowing)
Контрмеры |
|
| Контрмера | Описание |
|---|---|
| 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. |
Обнаружение
Consider monitoring for anomalous resolution changes for domain addresses. Efforts may need to be tailored to specific domains of interest as benign resolution changes are a common occurrence on the internet. 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
- Proofpoint Staff. (2015, December 15). The shadow knows: Malvertising campaigns use domain shadowing to pull in Angler EK. Retrieved October 16, 2020.
- Nick Biasini. (2015, March 3). Threat Spotlight: Angler Lurking in the Domain Shadows. Retrieved March 6, 2017.
- Mercer, W., Rascagneres, P. (2018, November 27). DNSpionage Campaign Targets Middle East. Retrieved October 9, 2020.
- Matt Dahl. (2019, January 25). Widespread DNS Hijacking Activity Targets Multiple Sectors. Retrieved February 14, 2022.
- Hirani, M., Jones, S., Read, B. (2019, January 10). Global DNS Hijacking Campaign: DNS Record Manipulation at Scale. Retrieved October 9, 2020.
Связанные риски
| Риск | Связи | |
|---|---|---|
|
Потеря доступа в Интернет
из-за
использования ненадежных публичных DNS серверов
в интернете
Доступность
Отказ в обслуживании
|
1
|
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