Techniques › T1563
T1563 Remote Service Session Hijacking
lateral movement — Linux, macOS, Windows · attack.mitre.org · JSON
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MITRE detection strategy
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analytics
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Sigma rules tagged attack.t1563
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KEV CVEs mapped here
<p>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.</p><p>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.</p>
KEV CVEs mapped to this technique · CTID Mappings Explorer
None. No KEV entry in the public mapping names this technique. Given that 74.7% of KEV has no mapping at all, this says more about the mapping than about the technique.
Detection strategy · ATT&CK Enterprise v19.2
- DET0079 Detection of Remote Service Session Hijacking v1.0
AN0216 WindowsDetection of anomalous RDP or remote service session activity where a logon session is hijacked rather than newly created. Indicators include mismatched user credentials vs. active session tokens, service session takeovers without corresponding successful logon events, or RDP shadowing activity without user consent.Tunable:
ExpectedUserSessionMapTimeWindowAN0217 LinuxDetection of SSH/Telnet session hijacking via discrepancies between authentication logs and active session tables. Adversary behavior includes reusing or stealing active PTY sessions, attaching to screen/tmux, or issuing commands without corresponding login events.auditd:SYSCALLexecve: Commands executed within an SSH session where no matching logon/authentication event exists→ DC0064 Command ExecutionNSM:ConnectionsMismatch between recorded user logon and active sessions (e.g., wtmp/utmp entries without corresponding authentication in auth.log)→ DC0067 Logon Session CreationNSM:FlowLong-lived or hijacked SSH sessions maintained with no active user activity→ DC0078 Network Traffic FlowTunable:MonitoredServicePortsAN0218 macOSDetection of hijacked VNC or SSH sessions on macOS where adversaries take over an existing session rather than authenticating directly. Indicators include process execution from active sessions without new logon events, manipulation of TTY sessions, or anomalous network activity tied to dormant sessions.macos:unifiedlogAuthentication inconsistencies where commands are executed without corresponding login events→ DC0067 Logon Session Creationmacos:unifiedlogExecution of processes linked to hijacked sessions (e.g., anomalous parent-child process lineage)→ DC0032 Process CreationNSM:FlowSuspicious long-lived or reattached remote desktop sessions from unexpected IPs→ DC0085 Network Traffic ContentTunable:SessionIdleThreshold
Sigma rules · SigmaHQ da9bb07d64, tag attack.t1563
No Sigma rule carries this tag. MITRE publishes a detection strategy above, so the behaviour is specified; what is missing is public detection content.