mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Christian Cloutier
265 lines
12 KiB
Python
265 lines
12 KiB
Python
"""
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Accepts a hostname or device id as input and tries to restore access for (unquarantines) the device in Crowdstrike. We then generate an observable report as well as a Markdown formatted report of the results. Both can be customized based on user preference.
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"""
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import phantom.rules as phantom
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import json
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from datetime import datetime, timedelta
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@phantom.playbook_block()
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def on_start(container):
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phantom.debug('on_start() called')
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# call 'input_filter' block
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input_filter(container=container)
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return
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@phantom.playbook_block()
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def input_filter(action=None, success=None, container=None, results=None, handle=None, filtered_artifacts=None, filtered_results=None, custom_function=None, loop_state_json=None, **kwargs):
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phantom.debug("input_filter() called")
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################################################################################
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# Determines if the provided inputs are present in the dataset.
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################################################################################
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# collect filtered artifact ids and results for 'if' condition 1
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matched_artifacts_1, matched_results_1 = phantom.condition(
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container=container,
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conditions=[
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["playbook_input:device", "!=", ""]
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],
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name="input_filter:condition_1",
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delimiter=None)
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# call connected blocks if filtered artifacts or results
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if matched_artifacts_1 or matched_results_1:
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format_fql(action=action, success=success, container=container, results=results, handle=handle, filtered_artifacts=matched_artifacts_1, filtered_results=matched_results_1)
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return
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@phantom.playbook_block()
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def host_observables(action=None, success=None, container=None, results=None, handle=None, filtered_artifacts=None, filtered_results=None, custom_function=None, loop_state_json=None, **kwargs):
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phantom.debug("host_observables() called")
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################################################################################
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# Format a normalized output for each host
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################################################################################
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unquarantine_device_result_data = phantom.collect2(container=container, datapath=["unquarantine_device:action_result.parameter.device_id","unquarantine_device:action_result.status","unquarantine_device:action_result.message"], action_results=results)
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query_device_result_data = phantom.collect2(container=container, datapath=["query_device:action_result.data.*.hostname"], action_results=results)
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unquarantine_device_parameter_device_id = [item[0] for item in unquarantine_device_result_data]
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unquarantine_device_result_item_1 = [item[1] for item in unquarantine_device_result_data]
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unquarantine_device_result_message = [item[2] for item in unquarantine_device_result_data]
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query_device_result_item_0 = [item[0] for item in query_device_result_data]
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host_observables__observable_array = None
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################################################################################
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## Custom Code Start
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################################################################################
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host_observables__observable_array = []
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for device_id, hostname, status, status_message in zip(unquarantine_device_parameter_device_id, query_device_result_item_0, unquarantine_device_result_item_1, unquarantine_device_result_message):
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# Initialize the observable dictionary
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observable = {
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"source": "Crowdstrike OAuth API",
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"type": "Endpoint",
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"activity_name": "Network Restore",
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"uid": device_id,
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"hostname": hostname,
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"status": status,
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"status_detail": status_message,
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"d3fend": {
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"d3f_tactic": "Restore",
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"d3f_technique": "D3-RNA",
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"version": "1.0.0"
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}
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}
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# Add the observable to the array
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host_observables__observable_array.append(observable)
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# Debug output for verification
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phantom.debug(host_observables__observable_array)
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################################################################################
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## Custom Code End
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################################################################################
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phantom.save_run_data(key="host_observables:observable_array", value=json.dumps(host_observables__observable_array))
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return
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@phantom.playbook_block()
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def format_fql(action=None, success=None, container=None, results=None, handle=None, filtered_artifacts=None, filtered_results=None, custom_function=None, loop_state_json=None, **kwargs):
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phantom.debug("format_fql() called")
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################################################################################
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# Format the FQL query to get the input device information using its ID or hostname.
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################################################################################
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template = """%%\nhostname:['{0}'],device_id:['{0}']\n%%"""
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# parameter list for template variable replacement
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parameters = [
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"playbook_input:device"
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]
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################################################################################
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## Custom Code Start
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################################################################################
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# Write your custom code here...
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################################################################################
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## Custom Code End
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################################################################################
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phantom.format(container=container, template=template, parameters=parameters, name="format_fql")
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query_device(container=container)
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return
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@phantom.playbook_block()
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def query_device(action=None, success=None, container=None, results=None, handle=None, filtered_artifacts=None, filtered_results=None, custom_function=None, loop_state_json=None, **kwargs):
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phantom.debug("query_device() called")
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# phantom.debug('Action: {0} {1}'.format(action['name'], ('SUCCEEDED' if success else 'FAILED')))
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################################################################################
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# Get information about the device to unquarantine using its hostname or device
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# id.
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################################################################################
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format_fql__as_list = phantom.get_format_data(name="format_fql__as_list")
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parameters = []
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# build parameters list for 'query_device' call
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for format_fql__item in format_fql__as_list:
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parameters.append({
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"limit": 50,
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"filter": format_fql__item,
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})
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################################################################################
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## Custom Code Start
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################################################################################
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# Write your custom code here...
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################################################################################
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## Custom Code End
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################################################################################
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phantom.act("query device", parameters=parameters, name="query_device", assets=["crowdstrike_oauth_api"], callback=unquarantine_device)
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return
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@phantom.playbook_block()
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def format_unquarantine_report(action=None, success=None, container=None, results=None, handle=None, filtered_artifacts=None, filtered_results=None, custom_function=None, loop_state_json=None, **kwargs):
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phantom.debug("format_unquarantine_report() called")
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################################################################################
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# Format a summary table with the information gathered from the playbook.
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################################################################################
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template = """An attempt to remove device(s) from isolation was performed via Splunk SOAR. The table below summarizes the information gathered.\n\n| Device ID | DNS Name | Device Path | Unquarantine Status |\n| --- | --- | --- | --- |\n%%\n| {0} | {1} | {2} | {3} |\n%%"""
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# parameter list for template variable replacement
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parameters = [
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"unquarantine_device:action_result.parameter.device_id",
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"unquarantine_device:action_result.parameter.hostname",
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"unquarantine_device:action_result.data.*.path",
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"unquarantine_device:action_result.status"
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]
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################################################################################
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## Custom Code Start
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################################################################################
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# Write your custom code here...
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################################################################################
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## Custom Code End
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################################################################################
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phantom.format(container=container, template=template, parameters=parameters, name="format_unquarantine_report")
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host_observables(container=container)
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return
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@phantom.playbook_block()
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def unquarantine_device(action=None, success=None, container=None, results=None, handle=None, filtered_artifacts=None, filtered_results=None, custom_function=None, loop_state_json=None, **kwargs):
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phantom.debug("unquarantine_device() called")
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# phantom.debug('Action: {0} {1}'.format(action['name'], ('SUCCEEDED' if success else 'FAILED')))
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################################################################################
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# Remove network isolation from a device in CrowdStrike.
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################################################################################
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query_device_result_data = phantom.collect2(container=container, datapath=["query_device:action_result.data.*.device_id","query_device:action_result.parameter.context.artifact_id"], action_results=results)
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parameters = []
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# build parameters list for 'unquarantine_device' call
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for query_device_result_item in query_device_result_data:
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parameters.append({
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"hostname": "",
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"device_id": query_device_result_item[0],
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"context": {'artifact_id': query_device_result_item[1]},
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})
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################################################################################
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## Custom Code Start
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################################################################################
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# Write your custom code here...
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################################################################################
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## Custom Code End
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################################################################################
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phantom.act("unquarantine device", parameters=parameters, name="unquarantine_device", assets=["crowdstrike_oauth_api"], callback=format_unquarantine_report)
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return
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@phantom.playbook_block()
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def on_finish(container, summary):
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phantom.debug("on_finish() called")
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format_unquarantine_report = phantom.get_format_data(name="format_unquarantine_report")
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host_observables__observable_array = json.loads(_ if (_ := phantom.get_run_data(key="host_observables:observable_array")) != "" else "null") # pylint: disable=used-before-assignment
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output = {
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"observable": host_observables__observable_array,
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"markdown_report": format_unquarantine_report,
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}
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################################################################################
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## Custom Code Start
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################################################################################
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# Write your custom code here...
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################################################################################
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## Custom Code End
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################################################################################
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phantom.save_playbook_output_data(output=output)
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return |