adding another atomic

atomics/T1053.002/T1053.002.yaml

@@ -54,3 +54,35 @@ atomic_tests:
     elevation_required: false
     command: |-
       echo "#{at_command}" | at #{time_spec}
+
+- name: At - Schedule a job via kubectl in a Pod
+  auto_generated_guid: 9c8a5a3e-1d64-4b4a-9f9a-0e6a9c1b5f2e
+  description: |
+    Launches a short-lived Ubuntu pod, installs the `at` utility, starts the `atd` daemon,
+    and submits a job with `at`. The pod is deleted after execution.
+  supported_platforms:
+  - containers
+  input_arguments:
+    pod_name:
+      description: K8s pod name to execute the command in
+      type: string
+      default: atomic-at-schedule
+    time_spec:
+      description: Time specification of when the command should run
+      type: string
+      default: now + 1 minute
+    at_command:
+      description: The command to be run
+      type: string
+      default: echo Hello from Atomic Red Team
+  dependencies:
+  - description: kubectl must be installed and configured
+    get_prereq_command: |
+      echo "kubectl must be installed manually"
+    prereq_command: |
+      which kubectl
+  executor:
+    name: bash
+    elevation_required: false
+    command: |
+      kubectl run #{pod_name} --image=ubuntu --restart=Never --attach --rm -i -- bash -lc "apt-get update -y >/dev/null 2>&1 && apt-get install -y at >/dev/null 2>&1 && (atd || /usr/sbin/atd) && echo '#{at_command}' | at #{time_spec} && at -l"