Automating Execution

Atomic tests are designed to simulate adversarial techniques, and automating their execution across environments ensures consistency, scalability, and efficiency in defensive security assessments. This section outlines tools, scripts, and workflows to automate Atomic Test execution, enabling Blue Teams to validate defenses programmatically and reduce manual overhead.

PowerShell Automation with Atomic Red Team¶

PowerShell is a common tool for automating Atomic tests, leveraging the Invoke-AtomicCommand cmdlet. This approach is ideal for Windows environments and integrates with the Atomic Red Team repository.

Example: Running Multiple Tests¶

# Define test IDs to execute
$testIds = @("T1059.001", "T1059.002", "T1059.003")

# Loop through each test ID and execute
foreach ($testId in $testIds) {
    Invoke-AtomicCommand -TestId $testId -Verbose
}

This script runs specified tests and outputs detailed results. For persistent execution, save the script as .ps1 and schedule it via Task Scheduler or a CI/CD pipeline.

Python Scripting with the Atomic Library¶

The Atomic Red Team Python library provides a programmatic interface for executing tests. This is useful for cross-platform automation or integrating with custom tools.

Example: Automated Test Runner¶

from atomic import Atomic

# Initialize the Atomic Red Team library
atomic = Atomic()

# Define test IDs and execute
test_ids = ["T1059.001", "T1059.002"]
for test_id in test_ids:
    result = atomic.run_test(test_id)
    print(f"Test {test_id} completed with status: {result.status}")

This script outputs the status of each test. Extend it to log results to a file or database for long-term analysis.

CI/CD Integration for Automated Testing¶

Integrate Atomic tests into CI/CD pipelines to validate defenses continuously. Tools like Jenkins, GitHub Actions, or GitLab CI can trigger tests on code changes or scheduled intervals.

Example: GitHub Actions Workflow¶

name: Run Atomic Tests
on: [push]
jobs:
  run-tests:
    runs-on: windows-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
      - name: Setup PowerShell
        uses: actions/setup-powershell@v2
      - name: Run Atomic Tests
        run: |
          Invoke-AtomicCommand -TestId T1059.001 -Verbose
          Invoke-AtomicCommand -TestId T1059.002 -Verbose

This workflow runs tests on Windows builds. Customize the test IDs and environment variables based on your infrastructure.

Orchestration Tools for Multi-Environment Testing¶

Tools like Ansible, Terraform, or Python’s paramiko can automate test execution across diverse environments (e.g., hybrid cloud, on-premises).

Example: Ansible Playbook¶

- name: Run Atomic Test on Target
  hosts: windows_hosts
  tasks:
    - name: Execute T1059.001
      win_shell: |
        Invoke-AtomicCommand -TestId T1059.001 -Verbose
      register: test_result
    - name: Debug test output
      debug:
        var: test_result.stdout

This playbook executes tests on Windows hosts and captures output for analysis. Ansible’s inventory system allows dynamic targeting of hosts.

Best Practices for Automation¶

Environment Isolation: Use VMs or containers to isolate test environments and avoid unintended side effects.
Result Logging: Store test outputs in centralized logs (e.g., ELK Stack, Splunk) for retrospective analysis.
Error Handling: Implement retries and alerts for failed tests to ensure reliability.
Permissions Management: Ensure scripts run with minimal privileges to prevent accidental system modifications.

Key takeaways¶

Use PowerShell or Python scripts to automate Atomic Test execution across platforms.
Integrate tests into CI/CD pipelines for continuous validation of defensive controls.
Leverage orchestration tools like Ansible to manage multi-environment test execution.
Prioritize logging, error handling, and environment isolation to ensure safe and repeatable testing.
Combine automation with manual analysis to balance efficiency and depth in security assessments.