mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Christian Cloutier
365 lines
16 KiB
Python
365 lines
16 KiB
Python
"""
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Accepts a hostname or device id as well as a file path as input and deletes the file from a device in Crowdstrike. We then generate an observable report as well as a Markdown formatted report. Both reports 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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logical_operator="and",
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conditions=[
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["playbook_input:device", "!=", ""],
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["playbook_input:path", "!=", ""]
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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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create_session_result_data = phantom.collect2(container=container, datapath=["create_session:action_result.parameter.device_id"], 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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run_admin_command_rm_result_data = phantom.collect2(container=container, datapath=["run_admin_command_rm:action_result.parameter.data","run_admin_command_rm:action_result.data"], action_results=results)
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create_session_parameter_device_id = [item[0] for item in create_session_result_data]
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query_device_result_item_0 = [item[0] for item in query_device_result_data]
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run_admin_command_rm_parameter_data = [item[0] for item in run_admin_command_rm_result_data]
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run_admin_command_rm_result_item_1 = [item[1] for item in run_admin_command_rm_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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i = 0
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for system in run_admin_command_rm_result_item_1:
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# Handle case where multiple files are listed on the same host.
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device_id = create_session_parameter_device_id[i] if i < len(create_session_parameter_device_id) else create_session_parameter_device_id[0]
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hostname = query_device_result_item_0[i] if i < len(query_device_result_item_0) else query_device_result_item_0[0]
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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": "File Eviction",
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"uid": device_id,
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"hostname": hostname,
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"file_artifacts": [],
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"d3fend": {
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"d3f_tactic": "Evict",
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"d3f_technique": "D3-FEV",
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"version": "1.0.0"
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}
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}
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for file in system[0]["resources"]:
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file_name = run_admin_command_rm_parameter_data[i]
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status = "success" if file["stdout"] and not file["stderr"] else "failed"
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status_message = file["stderr"] if file["stderr"] else file["stdout"]
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observable["file_artifacts"].append(
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{
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"name": file_name,
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"status": status,
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"status_detail": status_message
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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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i+=1
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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 using its hostname or device 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=create_session)
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return
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@phantom.playbook_block()
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def format_file_eviction_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_file_eviction_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 = """Endpoint Files were removed by Splunk SOAR. The table below summarizes the information gathered.\n\n| Device ID | File Path | Eviction 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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"query_device:action_result.data.*.device_id",
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"run_admin_command_rm:action_result.parameter.data",
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"run_admin_command_rm:action_result.data.*.resources.*.stdout",
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"run_admin_command_rm:action_result.data.*.resources.*.stderr"
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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_file_eviction_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 create_session(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("create_session() 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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# Creates a Real Time Response (RTR) session to interact with the endpoint
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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 'create_session' call
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for query_device_result_item in query_device_result_data:
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if query_device_result_item[0] is not None:
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parameters.append({
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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("create session", parameters=parameters, name="create_session", assets=["crowdstrike_oauth_api"], callback=run_admin_command_rm)
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return
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@phantom.playbook_block()
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def delete_session(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("delete_session() 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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# Closes a Real Time Response (RTR) session to interact with the endpoint
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################################################################################
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create_session_result_data = phantom.collect2(container=container, datapath=["create_session:action_result.summary.session_id","create_session:action_result.parameter.context.artifact_id"], action_results=results)
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parameters = []
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# build parameters list for 'delete_session' call
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for create_session_result_item in create_session_result_data:
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if create_session_result_item[0] is not None:
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parameters.append({
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"session_id": create_session_result_item[0],
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"context": {'artifact_id': create_session_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("delete session", parameters=parameters, name="delete_session", assets=["crowdstrike_oauth_api"], callback=format_file_eviction_report)
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return
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@phantom.playbook_block()
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def run_admin_command_rm(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("run_admin_command_rm() 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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# Run the rm admin command via Real Time Response (RTR)
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################################################################################
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playbook_input_path = phantom.collect2(container=container, datapath=["playbook_input:path"])
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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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create_session_result_data = phantom.collect2(container=container, datapath=["create_session:action_result.summary.session_id","create_session:action_result.parameter.context.artifact_id"], action_results=results)
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parameters = []
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# build parameters list for 'run_admin_command_rm' call
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for playbook_input_path_item in playbook_input_path:
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for query_device_result_item in query_device_result_data:
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for create_session_result_item in create_session_result_data:
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if query_device_result_item[0] is not None and create_session_result_item[0] is not None:
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parameters.append({
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"data": playbook_input_path_item[0],
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"command": "rm",
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"device_id": query_device_result_item[0],
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"session_id": create_session_result_item[0],
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"context": {'artifact_id': create_session_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("run admin command", parameters=parameters, name="run_admin_command_rm", assets=["crowdstrike_oauth_api"], callback=delete_session)
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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_file_eviction_report = phantom.get_format_data(name="format_file_eviction_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_file_eviction_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 |