> 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/aws-systems-manager-hosts-enumeration.md).
# AWS Systems Manager hosts enumeration
### Synopsis
| Field | Value |
| -------------------- | -------------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | N/A (single event) |
| Deduplication Period | 5 Days |
| Required Data | AWS Audit Log |
| Detection Modules | Cloud |
| Detector Tags | SSM Remote Management Analytics |
| ATT\&CK Tactic | Discovery (TA0007) |
| ATT\&CK Technique | Cloud Infrastructure Discovery (T1580) |
| Severity | Informational |
### Description
A cloud identity enumerated hosts managed by AWS Systems Manager. Adversaries may use this API to discover SSM managed instances as a precursor to lateral movement or remote code execution.
### Attacker's Goals
Discover SSM managed instances to plan lateral movement, remote command execution, or further reconnaissance.
### Investigative actions
* Determine whether the identity legitimately needs to enumerate SSM managed instances.
* Review subsequent activity by the identity, especially SSM SendCommand, StartSession, or instance profile modifications.
* Validate the source IP and user-agent of the API call.
### Variations
AWS Systems Manager hosts enumeration via programmatic access
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------- |
| ATT\&CK Tactic | Discovery (TA0007) |
| ATT\&CK Technique | Cloud Infrastructure Discovery (T1580) |
| Severity | Low |
**Description**
A cloud identity enumerated hosts managed by AWS Systems Manager. Adversaries may use this API to discover SSM managed instances as a precursor to lateral movement or remote code execution.
**Attacker's Goals**
Discover SSM managed instances to plan lateral movement, remote command execution, or further reconnaissance.
**Investigative actions**
* Determine whether the identity legitimately needs to enumerate SSM managed instances.
* Review subsequent activity by the identity, especially SSM SendCommand, StartSession, or instance profile modifications.
* Validate the source IP and user-agent of the API call.
---
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