> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/suspicious-container-runtime-connection-from-within-a-kubernetes-pod.md).

# Suspicious container runtime connection from within a Kubernetes Pod

### Synopsis

| Field                | Value                                                              |
| -------------------- | ------------------------------------------------------------------ |
| Activation Period    | 14 Days                                                            |
| Training Period      | 30 Days                                                            |
| Test Period          | N/A (single event)                                                 |
| Deduplication Period | 5 Days                                                             |
| Required Data        | XDR Agent                                                          |
| Detector Tags        | Kubernetes - AGENT, Containers                                     |
| ATT\&CK Tactic       | Execution (TA0002)                                                 |
| ATT\&CK Technique    | Container Administration Command (T1609), Deploy Container (T1610) |
| Severity             | Informational                                                      |

### Description

A process from within a Kubernetes Pod communicated with the container runtime daemon using the runtime socket. This may indicate an adversary attempting to escape from the Kubernetes Pod to the host.

### Attacker's Goals

Escape from a container to the host machine and expand the foothold in the network.

### Investigative actions

* Change the container socket configuration.
* Check if the default Docker daemon binding to TCP changed. If so, non-root users may gain access to the container.

### Variations

<details>

<summary>Suspicious container runtime connection from within a Kubernetes Pod using the curl client</summary>

**Synopsis**

| Field             | Value                                                              |
| ----------------- | ------------------------------------------------------------------ |
| ATT\&CK Tactic    | Execution (TA0002)                                                 |
| ATT\&CK Technique | Container Administration Command (T1609), Deploy Container (T1610) |
| Severity          | Low                                                                |

**Description**

A process from within a Kubernetes Pod communicated with the container runtime daemon using the runtime socket. This may indicate an adversary attempting to escape from the Kubernetes Pod to the host.

**Attacker's Goals**

Escape from a container to the host machine and expand the foothold in the network.

**Investigative actions**

* Change the container socket configuration.
* Check if the default Docker daemon binding to TCP changed. If so, non-root users may gain access to the container.

</details>

<details>

<summary>Suspicious container runtime connection from within a Kubernetes Pod using the docker client</summary>

**Synopsis**

| Field             | Value                                                              |
| ----------------- | ------------------------------------------------------------------ |
| ATT\&CK Tactic    | Execution (TA0002)                                                 |
| ATT\&CK Technique | Container Administration Command (T1609), Deploy Container (T1610) |
| Severity          | Medium                                                             |

**Description**

A process from within a Kubernetes Pod communicated with the container runtime daemon using the runtime socket. This may indicate an adversary attempting to escape from the Kubernetes Pod to the host.

**Attacker's Goals**

Escape from a container to the host machine and expand the foothold in the network.

**Investigative actions**

* Change the container socket configuration.
* Check if the default Docker daemon binding to TCP changed. If so, non-root users may gain access to the container.

</details>


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