TA0040 · IMPACT
Endpoint Denial of Service
Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.
Detect it with
Detection of Endpoint DoS can sometimes be achieved before the effect is sufficient to cause significant impact to the availability of the service, but such response time typically requires very aggressive monitoring and responsiveness.
Why it matters on shift
Endpoint Denial of Service is one of the concrete ways adversaries achieve impact. Recognising it in telemetry lets you name the technique in your ticket and pivot to what came before and after.
What to look for next
After impact, the next tactic is usually Impact. Search your telemetry for the transition before closing the ticket.
4 sub-techniques
How it shows up in practice
- T1499.001
OS Exhaustion Flood
Adversaries may launch a denial of service (DoS) attack targeting an endpoint's operating system (OS).
- T1499.002
Service Exhaustion Flood
Adversaries may target the different network services provided by systems to conduct a denial of service (DoS). Adversaries often target the availability of DNS and web services, however others have been targeted as well.
- T1499.003
Application Exhaustion Flood
Adversaries may target resource intensive features of applications to cause a denial of service (DoS), denying availability to those applications. For example, specific features in web applications may be highly resource intensive.
- T1499.004
Application or System Exploitation
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
Kill-chain context