> 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/msi-accessed-a-web-page-running-a-server-side-script.md).

# MSI accessed a web page running a server-side script

### Synopsis

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

### Description

The Microsoft installer command line included a URL to a web page running a server-side script, which is suspicious.

### Attacker's Goals

An attacker may use this technique to install a malicious tool from a remote server.

### Investigative actions

Check whether the URL is benign and if this was a desired behavior as part of its normal execution flow.

### Variations

<details>

<summary>MSI accessed a web page running a server-side script</summary>

**Synopsis**

| Field             | Value                                 |
| ----------------- | ------------------------------------- |
| ATT\&CK Tactic    | Defense Evasion (TA0005)              |
| ATT\&CK Technique | System Binary Proxy Execution (T1218) |
| Severity          | High                                  |

**Description**

MSI on an internet-facing server accessed a web page running a server-side script.

**Attacker's Goals**

An attacker may use this technique to install a malicious tool from a remote server.

**Investigative actions**

Check whether the URL is benign and if this was a desired behavior as part of its normal execution flow.

</details>


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