Techniques › T1090 › AN1232
AN1232 Analytic 1232
ESXi · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Direct use of
nc, socat, or reverse tunnel scripts initiated by abnormal user contexts or unauthorized VIBs initiating connections from hypervisor to external systems.</p>- Detects
- T1090 Proxy
- Part of
- DET0445 Detection of Proxy Infrastructure Setup and Traffic Bridging
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 | None | DC0064 Command Execution |
| esxi:vmkernel | None | 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 |
|---|---|
CLICommand | Custom proxy or port forwarding scripts executed from ESXi shell. |
DestinationIP | Unusual outbound connections from ESXi host, particularly to internet. |
UserContext | Root or elevated users initiating unexpected tunnels. |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2019-3396 | Atlassian Confluence Server and Data Server | Mapped |
| CVE-2021-22986 | F5 BIG-IP and BIG-IQ Centralized Management | Mapped |
| CVE-2021-26855 | Microsoft Exchange Server | Mapped |