---
title: Trusted Developer Application Usage
description: Identifies possibly suspicious activity using trusted Windows developer activity. Rule type: query Rule indices: winlogbeat-*, logs-endpoint.events.*,...
url: https://www.elastic.co/docs/reference/security/prebuilt-rules/rules/_deprecated/defense_evasion_execution_via_trusted_developer_utilities
products:
  - Elastic Security
---

# Trusted Developer Application Usage
<warning>
  This rule has been deprecated as of 2021/04/15.
</warning>

Identifies possibly suspicious activity using trusted Windows developer activity.
**Rule type**: query
**Rule indices**:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*

**Rule Severity**: low
**Risk Score**: 21
**Runs every**: 
**Searches indices from**: `now-9m`
**Maximum alerts per execution**: 100
**References**:
**Tags**:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion

**Version**: 100
**Rule authors**:
- Elastic

**Rule license**: Elastic License v2

## Rule Query

```kuery
event.category:process and event.type:(start or process_started) and process.name:(MSBuild.exe or msxsl.exe)
```

**Framework:** MITRE ATT&CK
- Tactic:
  - Name: Defense Evasion
  - Id: TA0005
  - Reference URL: [[https://attack.mitre.org/tactics/TA0005/](https://attack.mitre.org/tactics/TA0005/)](https://attack.mitre.org/tactics/TA0005/)
- Technique:
  - Name: Trusted Developer Utilities Proxy Execution
  - Id: T1127
  - Reference URL: [[https://attack.mitre.org/techniques/T1127/](https://attack.mitre.org/techniques/T1127/)](https://attack.mitre.org/techniques/T1127/)

**Framework:** MITRE ATT&CK
- Tactic:
  - Name: Execution
  - Id: TA0002
  - Reference URL: [[https://attack.mitre.org/tactics/TA0002/](https://attack.mitre.org/tactics/TA0002/)](https://attack.mitre.org/tactics/TA0002/)