> 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/suspicious-docker-image-download-from-an-unusual-repository.md).
# Suspicious docker image download from an unusual repository
### 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 | Kubernetes - AGENT, Containers |
| ATT\&CK Tactic | Execution (TA0002) |
| ATT\&CK Technique | User Execution: Malicious Image (T1204.003) |
| Severity | Informational |
### Description
The agent has pulled a docker image from a repository for the first time.
### Attacker's Goals
Adversaries may rely on a user running a malicious image to facilitate execution.
### Investigative actions
* Scan the docker image that was pulled.
* Check the repository designation.
* Check on which other agents the docker image is being used.
### Variations
Suspicious docker image download from an unrecognized registry
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------- |
| ATT\&CK Tactic | Execution (TA0002) |
| ATT\&CK Technique | User Execution: Malicious Image (T1204.003) |
| Severity | Low |
**Description**
The agent has pulled a docker image from a registry that has never been used in the organization.
**Attacker's Goals**
Adversaries may rely on a user running a malicious image to facilitate execution.
**Investigative actions**
* Scan the docker image that was pulled.
* Check the repository designation.
* Check on which other agents the docker image is being used.
Suspicious docker image download from an unrecognized repository
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------- |
| ATT\&CK Tactic | Execution (TA0002) |
| ATT\&CK Technique | User Execution: Malicious Image (T1204.003) |
| Severity | Low |
**Description**
The agent has pulled a docker image from a repository that has never been used in the organization.
**Attacker's Goals**
Adversaries may rely on a user running a malicious image to facilitate execution.
**Investigative actions**
* Scan the docker image that was pulled.
* Check the repository designation.
* Check on which other agents the docker image is being used.
---
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