---
name: cyberstrikeus-t1619-cloud-storage-object-discovery
description: "Adversaries may enumerate objects in cloud storage infrastructure."
license: "AGPL-3.0"
metadata:
  decimalai-skill-id: "603bd033-82ab-4678-abeb-bd110f758a3d"
  decimalai-version-id: "786fd466-d7f1-425b-b2b2-8f8be619cdd3"
  decimalai-version: "1"
  decimalai-body-sha256: "0952252b6c474f64d46e105b1e4948011613f7d120568fb75deead71eda5f75a"
  decimalai-name: "cyberstrikeus/T1619_cloud-storage-object-discovery"
  decimalai-format: "1"
  decimalai-invocation: "model"
  decimalai-category: "security"
  decimalai-source: "https://app.decimal.ai/s/cyberstrikeus-t1619-cloud-storage-object-discovery@1/SKILL.md"
---
# T1619 Cloud Storage Object Discovery

## High-Level Description

Adversaries may enumerate objects in cloud storage infrastructure. Adversaries may use this information during automated discovery to shape follow-on behaviors, including requesting all or specific objects from cloud storage. Similar to File and Directory Discovery on a local host, after identifying available storage services (i.e. Cloud Infrastructure Discovery) adversaries may access the contents/objects stored in cloud infrastructure.

Cloud service providers offer APIs allowing users to enumerate objects stored within cloud storage. Examples include ListObjectsV2 in AWS and List Blobs in Azure .

## Kill Chain Phase

- Discovery (TA0007)

**Platforms:** IaaS

## What to Check

- [ ] Identify if Cloud Storage Object Discovery technique is applicable to target environment
- [ ] Check IaaS systems for indicators of Cloud Storage Object Discovery
- [ ] Verify mitigations are bypassed or absent (1 known mitigations)
- [ ] Assess detection coverage (1 detection strategies)

## How to Test

### Manual Testing

1. **Identify Attack Surface**: Determine if the target environment is susceptible to Cloud Storage Object Discovery by examining the target platforms (IaaS).

2. **Assess Existing Defenses**: Review whether mitigations for T1619 are in place. If defenses are absent or misconfigured, this technique may be exploitable.

3. **Execute Test**: Use tools and methods described in the MITRE ATT&CK page and external references below.

> **Note**: No Atomic Red Team tests available for this technique. See [Atomic Red Team GitHub](https://github.com/redcanaryco/atomic-red-team) for updates.

## Remediation Guide

### M1018 User Account Management

Restrict granting of permissions related to listing objects in cloud storage to necessary accounts.

## Detection

### Detection Strategy for Cloud Storage Object Discovery

## Risk Assessment

| Finding                                             | Severity | Impact    |
| --------------------------------------------------- | -------- | --------- |
| Cloud Storage Object Discovery technique applicable | Medium   | Discovery |

## CWE Categories

| CWE ID  | Title                             |
| ------- | --------------------------------- |
| CWE-200 | Exposure of Sensitive Information |

## References

- [ListObjectsV2](https://docs.aws.amazon.com/AmazonS3/latest/API/API_ListObjectsV2.html)
- [List Blobs](https://docs.microsoft.com/en-us/rest/api/storageservices/list-blobs)
- [Atomic Red Team - T1619](https://github.com/redcanaryco/atomic-red-team/tree/master/atomics/T1619)
- [MITRE ATT&CK - T1619](https://attack.mitre.org/techniques/T1619)