Remote Service Session Hijacking
Sub-techniques (2)
| ID | Name |
|---|---|
| .001 | SSH Hijacking |
| .002 | RDP Hijacking |
Adversaries may take control of preexisting sessions with remote services to move laterally in an environment. Users may use valid credentials to log into a service specifically designed to accept remote connections, such as telnet, SSH, and RDP. When a user logs into a service, a session will be established that will allow them to maintain a continuous interaction with that service. Adversaries may commandeer these sessions to carry out actions on remote systems. Remote Service Session Hijacking differs from use of Remote Services because it hijacks an existing session rather than creating a new session using Valid Accounts.(Citation: RDP Hijacking Medium)(Citation: Breach Post-mortem SSH Hijack)
Mitigations |
|
| Mitigation | Description |
|---|---|
| Network Segmentation |
Architect sections of the network to isolate critical systems, functions, or resources. Use physical and logical segmentation to prevent access to potentially sensitive systems and information. Use a DMZ to contain any internet-facing services that should not be exposed from the internal network. Configure separate virtual private cloud (VPC) instances to isolate critical cloud systems. |
| Disable or Remove Feature or Program |
Remove or deny access to unnecessary and potentially vulnerable software to prevent abuse by adversaries. |
| Password Policies |
Set and enforce secure password policies for accounts. |
| User Account Management |
Manage the creation, modification, use, and permissions associated to user accounts. |
| Privileged Account Management |
Manage the creation, modification, use, and permissions associated to privileged accounts, including SYSTEM and root. |
Detection
Use of these services may be legitimate, depending upon the network environment and how it is used. Other factors, such as access patterns and activity that occurs after a remote login, may indicate suspicious or malicious behavior with that service. Monitor for user accounts logged into systems they would not normally access or access patterns to multiple systems over a relatively short period of time. Monitor for processes and command-line arguments associated with hijacking service sessions.
Связанные риски
Каталоги
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