Techniques › T1563 › AN0217
AN0217 Analytic 0217
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detection 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.</p>
- Detects
- T1563 Remote Service Session Hijacking
- Part of
- DET0079 Detection of Remote Service Session Hijacking
Log sources and channels
Exactly as MITRE states them in x_mitre_log_source_references. Where a channel is vague, it is vague in the source; kevmap does not tidy it.
| Log source | Channel | Data component |
|---|---|---|
| auditd:SYSCALL | execve: Commands executed within an SSH session where no matching logon/authentication event exists | DC0064 Command Execution |
| NSM:Connections | Mismatch between recorded user logon and active sessions (e.g., wtmp/utmp entries without corresponding authentication in auth.log) | DC0067 Logon Session Creation |
| NSM:Flow | Long-lived or hijacked SSH sessions maintained with no active user activity | DC0078 Network Traffic Flow |
Mutable elements
Parameters MITRE marks as environment-specific. These are the knobs you are expected to tune; they are why an analytic is not a rule.
| Field | Description |
|---|---|
MonitoredServicePorts | Ports for SSH/Telnet/RDP monitored for session hijacking; may vary by environment. |