Techniques › T1090.001 › AN0207
AN0207 Analytic 0207
ESXi · attack.mitre.org · ATT&CK Enterprise v19.2
<p>ESXi shell execution of tools/scripts (
nc, socat, perl) relaying network traffic to other internal hosts, especially when initiated by unauthorized users or VMs.</p>- Detects
- T1090.001 Internal Proxy
- Part of
- DET0075 Internal Proxy Behavior via Lateral Host-to-Host C2 Relay
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 |
|---|---|---|
| esxi:shell | /var/log/shell.log | DC0032 Process Creation |
| esxi:vmkernel | /var/log/vmkernel.log | DC0078 Network Traffic Flow |
| NSM:Flow | conn.log | DC0082 Network Connection Creation |
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 |
|---|---|
CLICommandPattern | Watch for chained shell commands building local-to-local connections. |
VMInitiator | Correlate to which VM initiated the traffic tunnel; unexpected VM behavior may be suspicious. |
ConnectionDirectionality | Unusual east-west communication patterns among VMs. |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2021-22017 | VMware vCenter Server | Mapped |