> 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/uncommon-jsp-file-write-by-a-java-process.md).

# Uncommon jsp file write by a Java 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 with eXtended Threat Hunting (XTH)     |
| ATT\&CK Tactic       | Persistence (TA0003)                             |
| ATT\&CK Technique    | Server Software Component: Web Shell (T1505.003) |
| Severity             | Medium                                           |

### Description

An uncommon jsp file was written by a Java process.

### Attacker's Goals

Persistence on the host.

### Investigative actions

* Check if the file was added during regular java process actions.
* Check if the jsp file contains malicious content.


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