Techniques › T1021.005 › AN0505
AN0505 Analytic 0505
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Spawning of VNC-related processes (e.g.,
x11vnc, vncserver) coupled with authentication logs and port listening behavior on TCP 5900.</p>- Detects
- T1021.005 VNC
- Part of
- DET0178 Behavioral Detection of Unauthorized VNC Remote Control Sessions
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:EXECVE | None | DC0032 Process Creation |
| linux:syslog | None | DC0088 Logon Session Metadata |
| NSM:Flow | TCP port 5900 open | 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 |
|---|---|
ListeningPort | Default VNC port (5900) but may vary in config |
ProcessNameFilter | Filter specific VNC binaries in process execution logs |
UserContext | Scope detection to non-service or high-privilege accounts |