> 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/a-compromised-process-accessed-a-rare-external-host.md).

# A compromised process accessed a rare external host

### Synopsis

| Field                | Value                                                                                              |
| -------------------- | -------------------------------------------------------------------------------------------------- |
| Activation Period    | 14 Days                                                                                            |
| Training Period      | 30 Days                                                                                            |
| Test Period          | 2 Hours                                                                                            |
| Deduplication Period | 1 Day                                                                                              |
| Required Data        | <p>Requires all of the following:<br>XDR Agent<br>XDR Agent with eXtended Threat Hunting (XTH)</p> |
| Detector Tags        | EDR Windows C2 Analytics                                                                           |
| ATT\&CK Tactic       | Command and Control (TA0011)                                                                       |
| ATT\&CK Technique    | Application Layer Protocol (T1071)                                                                 |
| Severity             | Low                                                                                                |

### Description

A compromised process accessed a rare external host.

### Attacker's Goals

Communicate with the attacker's Command and Control (C2) infrastructure while leveraging a compromised process to evade detection.

### Investigative actions

* Investigate the compromised process.
* Check the rare remote host.

### Variations

<details>

<summary>A process compromised by DLL sideloading accessed a rare external host and transferred a large amount of data</summary>

**Synopsis**

| Field             | Value                              |
| ----------------- | ---------------------------------- |
| ATT\&CK Tactic    | Command and Control (TA0011)       |
| ATT\&CK Technique | Application Layer Protocol (T1071) |
| Severity          | High                               |

**Description**

A process compromised by DLL sideloading accessed a rare external host and transferred a large amount of data.

**Attacker's Goals**

Communicate with the attacker's Command and Control (C2) infrastructure while leveraging a compromised process to evade detection.

**Investigative actions**

* Investigate the compromised process.
* Check the rare remote host.

</details>

<details>

<summary>A process compromised by DLL sideloading accessed a rare external host</summary>

**Synopsis**

| Field             | Value                              |
| ----------------- | ---------------------------------- |
| ATT\&CK Tactic    | Command and Control (TA0011)       |
| ATT\&CK Technique | Application Layer Protocol (T1071) |
| Severity          | Medium                             |

**Description**

A process compromised by DLL sideloading accessed a rare external host.

**Attacker's Goals**

Communicate with the attacker's Command and Control (C2) infrastructure while leveraging a compromised process to evade detection.

**Investigative actions**

* Investigate the compromised process.
* Check the rare remote host.

</details>

<details>

<summary>An injected process accessed a rare external host</summary>

**Synopsis**

| Field             | Value                              |
| ----------------- | ---------------------------------- |
| ATT\&CK Tactic    | Command and Control (TA0011)       |
| ATT\&CK Technique | Application Layer Protocol (T1071) |
| Severity          | Medium                             |

**Description**

An injected process accessed a rare external host.

**Attacker's Goals**

Communicate with the attacker's Command and Control (C2) infrastructure while leveraging a compromised process to evade detection.

**Investigative actions**

* Investigate the compromised process.
* Check the rare remote host.

</details>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/a-compromised-process-accessed-a-rare-external-host.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.