> 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/mshta-exe-spawns-from-a-browser-process.md).

# Mshta.exe spawns from a browser process

### Synopsis

| Field                | Value                                            |
| -------------------- | ------------------------------------------------ |
| Activation Period    | 14 Days                                          |
| Training Period      | 30 Days                                          |
| Test Period          | N/A (single event)                               |
| Deduplication Period | 1 Day                                            |
| Required Data        | XDR Agent                                        |
| Detector Tags        | LOLBIN Execution Analytics                       |
| ATT\&CK Tactic       | Defense Evasion (TA0005)                         |
| ATT\&CK Technique    | System Binary Proxy Execution: Mshta (T1218.005) |
| Severity             | Low                                              |

### Description

Mshta is the Microsoft HTML Application Host. It executes HTML applications on Windows. Detected when a browser process has spawned mshta, which can be a potential attack vector.

### Attacker's Goals

Execute malicious code through system binary proxy execution to bypass application controls and security monitoring.

### Investigative actions

* Examine the command line arguments passed to mshta for suspicious URLs or file paths.
* Check the browser process that spawned mshta for signs of compromise.
* Review network connections around the time of execution.
* Analyze any HTML applications (.hta files) that may have been executed.

### Variations

<details>

<summary>Mshta.exe spawns from a browser process that executes a script from a URL</summary>

**Synopsis**

| Field             | Value                                            |
| ----------------- | ------------------------------------------------ |
| ATT\&CK Tactic    | Defense Evasion (TA0005)                         |
| ATT\&CK Technique | System Binary Proxy Execution: Mshta (T1218.005) |
| Severity          | Medium                                           |

**Description**

Mshta is the Microsoft HTML Application Host. It executes HTML applications on Windows. Detected when a browser process has spawned mshta, which can be a potential attack vector.

**Attacker's Goals**

Execute malicious code through system binary proxy execution to bypass application controls and security monitoring.

**Investigative actions**

* Examine the command line arguments passed to mshta for suspicious URLs or file paths.
* Check the browser process that spawned mshta for signs of compromise.
* Review network connections around the time of execution.
* Analyze any HTML applications (.hta files) that may have been executed.

</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/mshta-exe-spawns-from-a-browser-process.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.
