This action executes Atomic Red Team tests and adversary emulation schedules directly on GitHub Actions runners with the help of the Invoke-AtomicRedTeam PowerShell framework. Linux, macOS, and Windows runners are supported.

Currently, the action exposes minimal configuration options for the Invoke-AtomicTest and Invoke-AtomicRunner cmdlets used to execute tests and schedules. It primarily relies on the default settings and the default atomics location (C:\AtomicRedTeam\atomics on Windows and ~/AtomicRedTeam/atomics on Linux/macOS). The action installs Invoke-AtomicRedTeam from the PowerShell Gallery and downloads atomics from the Atomic Red Team GitHub repository if they are not already present on the runner.

It's possible to customize the behavior of Invoke-AtomicRunner by placing a privateConfig.ps1 script in the directory where the Invoke-AtomicRedTeam module is installed, as described in the Invoke-AtomicRedTeam documentation.

Execution logs are uploaded to the GitHub Actions workflow run as artifacts upon successful completion.

• technique

  ID of the MITRE ATT&CK technique to execute. For example:

  with:
    technique: T1033

  • Type: string
  • Optional (must be provided if the adversary-emulation input parameter is set to "false")

• test-names

  Comma-separated list of Atomic Red Team test names to execute. For example:

  with:
    technique: T1033
    test-names: User Discovery With Env Vars PowerShell Script,GetCurrent User with PowerShell Script

  • Type: string
  • Optional

• test-numbers

  Comma-separated list of Atomic Red Team test numbers to execute. For example:

  with:
    technique: T1033
    test-numbers: 4,5

  • Type: string
  • Optional

• test-guids

  Comma-separated list of Atomic Red Team test GUIDs to execute. For example:

  with:
    technique: T1033
    test-guids: dcb6cdee-1fb0-4087-8bf8-88cfd136ba51,1392bd0f-5d5a-429e-81d9-eb9d4d4d5b3b

  • Type: string
  • Optional

• test-input-args

  Stringified JSON object containing the input arguments for the Atomic Red Team test. For example:

  with:
    technique: T1140
    test-guids: 356dc0e8-684f-4428-bb94-9313998ad608
    test-input-args: '{"message":"hello world"}'

  • Type: string
  • Optional

• logging-module

  Name of the logging module to use for the Atomic Red Team test execution. For example:

  with:
    technique: T1033
    logging-module: Attire-ExecutionLogger

  • Type: string
  • Optional
  • Default: Default-ExecutionLogger

• upload-log-artifact

  Flag to indicate whether to upload the execution logs as an artifact. For example:

  with:
    technique: T1033
    upload-log-artifact: false

  • Type: string
  • Optional
  • Default: true

• log-artifact-name

  Name of the artifact containing the execution logs. For example:

  with:
    technique: T1033
    log-artifact-name: T1033-logs

  If the action is executed more than once in the same workflow run, ensure this argument is set to a unique value for each execution to prevent artifact upload failures.

  • Type: string
  • Optional
  • Default: invoke-atomic-execution-logs

• get-prereqs

  Flag to indicate whether to try to install the prerequisites for the Atomic Red Team tests. For example:

  with:
    technique: T1033
    get-prereqs: false

  • Type: string
  • Optional
  • Default: true

• cleanup

  Flag to indicate whether to clean up the Atomic Red Team test artifacts after execution. For example:

  with:
    technique: T1033
    cleanup: false

  • Type: string
  • Optional
  • Default: true

• adversary-emulation

  Flag to indicate whether to execute an adversary emulation schedule instead of a single Atomic Red Team test.

  • Type: string
  • Optional
  • Default: false

• list-of-atomics

  Path to the CSV schedule file containing the list of Atomic Red Team tests to execute. For example:

  with:
    adversary-emulation: true
    list-of-atomics: ./IcedID.csv

  • Type: string
  • Optional (must be provided if the adversary-emulation input parameter is set to "true")

name: Run Atomic Red Team Test
on:
  pull_request:
    branches:
      - main
  workflow_dispatch:

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - uses: smolse/invoke-atomic-action@main
        with:
          technique: T1033
          test-numbers: 2

name: Run Adversary Emulation
on:
  pull_request:
    branches:
      - main
  workflow_dispatch:

jobs:
  adversary-emulation:
    runs-on: windows-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - uses: smolse/invoke-atomic-action@main
        with:
          adversary-emulation: true
          list-of-atomics: ./IcedID.csv