mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Lou Stella
515 lines
26 KiB
JSON
515 lines
26 KiB
JSON
{
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"blockly": false,
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"blockly_xml": "<xml></xml>",
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"category": "Threat Response",
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"coa": {
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"data": {
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"description": "Published in response to CVE-2021-44228, this playbook investigates an internal unix host using SSH. This pushes a bash script to the endpoint and runs it, collecting generic information about the processes, user activity, and network activity. This includes the process list, login history, cron jobs, and open sockets. The results are zipped up in .csv files and added to the vault for an analyst to review.",
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"edges": [
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{
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"id": "port_0_to_port_2",
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"sourceNode": "0",
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"sourcePort": "0_out",
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"targetNode": "2",
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"targetPort": "2_in"
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},
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{
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"id": "port_0_to_port_3",
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"sourceNode": "0",
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"sourcePort": "0_out",
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"targetNode": "3",
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"targetPort": "3_in"
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},
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{
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"id": "port_0_to_port_5",
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"sourceNode": "0",
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"sourcePort": "0_out",
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"targetNode": "5",
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"targetPort": "5_in"
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},
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{
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"id": "port_0_to_port_6",
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"sourceNode": "0",
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"sourcePort": "0_out",
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"targetNode": "6",
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"targetPort": "6_in"
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},
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{
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"id": "port_6_to_port_7",
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"sourceNode": "6",
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"sourcePort": "6_out",
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"targetNode": "7",
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"targetPort": "7_in"
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},
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{
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"id": "port_7_to_port_8",
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"sourceNode": "7",
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"sourcePort": "7_out",
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"targetNode": "8",
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"targetPort": "8_in"
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},
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{
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"id": "port_8_to_port_9",
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"sourceNode": "8",
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"sourcePort": "8_out",
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"targetNode": "9",
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"targetPort": "9_in"
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},
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{
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"id": "port_9_to_port_1",
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"sourceNode": "9",
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"sourcePort": "9_out",
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"targetNode": "1",
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"targetPort": "1_in"
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},
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{
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"id": "port_5_to_port_1",
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"sourceNode": "5",
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"sourcePort": "5_out",
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"targetNode": "1",
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"targetPort": "1_in"
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},
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{
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"id": "port_3_to_port_1",
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"sourceNode": "3",
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"sourcePort": "3_out",
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"targetNode": "1",
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"targetPort": "1_in"
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},
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{
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"id": "port_2_to_port_1",
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"sourceNode": "2",
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"sourcePort": "2_out",
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"targetNode": "1",
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"targetPort": "1_in"
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}
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],
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"hash": "9fb5a54460b6307f046b6fff0272919a4532a39d",
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"nodes": {
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"0": {
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"data": {
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"advanced": {
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"join": []
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},
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"functionName": "on_start",
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"id": "0",
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"type": "start"
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},
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"errors": {},
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"id": "0",
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"type": "start",
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"x": 500,
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"y": -3.659295089164516e-13
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},
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"1": {
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"data": {
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"advanced": {
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"join": []
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},
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"functionId": 1,
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"functionName": "on_finish",
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"id": "1",
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"type": "end"
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},
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"errors": {},
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"id": "1",
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"type": "end",
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"userCode": "\n # This function is called after all actions are completed.\n # summary of all the action and/or all details of actions\n # can be collected here.\n\n # summary_json = phantom.get_summary()\n # if 'result' in summary_json:\n # for action_result in summary_json['result']:\n # if 'action_run_id' in action_result:\n # action_results = phantom.get_action_results(action_run_id=action_result['action_run_id'], result_data=False, flatten=False)\n # phantom.debug(action_results)\n\n",
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"x": 500,
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"y": 520
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},
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"2": {
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"data": {
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"action": "list processes",
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"actionType": "investigate",
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"advanced": {
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"join": []
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},
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"connector": "SSH",
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"connectorConfigs": [
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"ssh"
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],
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"connectorId": "d37aa7fe-c973-44ee-a164-2ca5bf321b1f",
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"connectorVersion": "v1",
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"functionId": 1,
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"functionName": "list_processes_1",
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"id": "2",
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"parameters": {
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"ip_hostname": "playbook_input:ip_or_hostname"
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},
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"requiredParameters": [
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"ip_hostname"
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],
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"type": "action"
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},
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"errors": {},
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"id": "2",
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"type": "action",
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"x": 1080,
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"y": 119.99999999999994
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},
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"3": {
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"data": {
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"action": "list connections",
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"actionType": "investigate",
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"advanced": {
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"join": []
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},
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"connector": "SSH",
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"connectorConfigs": [
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"ssh"
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],
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"connectorId": "d37aa7fe-c973-44ee-a164-2ca5bf321b1f",
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"connectorVersion": "v1",
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"functionId": 1,
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"functionName": "list_connections_1",
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"id": "3",
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"parameters": {
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"ip_hostname": "playbook_input:ip_or_hostname"
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},
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"requiredParameters": [
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"ip_hostname"
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],
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"type": "action"
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},
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"errors": {},
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"id": "3",
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"type": "action",
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"x": 800,
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"y": 119.99999999999994
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},
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"5": {
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"data": {
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"action": "list firewall rules",
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"actionType": "investigate",
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"advanced": {
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"join": []
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},
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"connector": "SSH",
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"connectorConfigs": [
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"ssh"
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],
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"connectorId": "d37aa7fe-c973-44ee-a164-2ca5bf321b1f",
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"connectorVersion": "v1",
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"functionId": 1,
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"functionName": "list_firewall_rules_1",
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"id": "5",
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"parameters": {
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"ip_hostname": "playbook_input:ip_or_hostname"
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},
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"requiredParameters": [
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"ip_hostname"
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],
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"type": "action"
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},
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"errors": {},
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"id": "5",
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"type": "action",
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"x": 160,
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"y": 119.99999999999994
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},
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"6": {
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"data": {
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"advanced": {
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"customName": "write embedded bash script to vault",
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"customNameId": 0,
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"join": []
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},
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"customFunction": {
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"draftMode": false,
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"name": "passthrough",
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"repoName": "community"
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},
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"functionId": 1,
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"functionName": "write_embedded_bash_script_to_vault",
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"id": "6",
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"selectMore": false,
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"type": "utility",
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"utilities": {
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"passthrough": {
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"description": "Return the inputs as outputs. This is useful for publishing pieces of data for other blocks in the playbook to use.",
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"fields": [
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_1",
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"name": "input_1",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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},
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_2",
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"name": "input_2",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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},
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_3",
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"name": "input_3",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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},
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_4",
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"name": "input_4",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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},
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_5",
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"name": "input_5",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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},
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_6",
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"name": "input_6",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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},
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_7",
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"name": "input_7",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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},
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_8",
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"name": "input_8",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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},
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_9",
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"name": "input_9",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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},
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{
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"dataTypes": [
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"*"
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],
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"description": "",
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"inputType": "list",
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"label": "input_10",
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"name": "input_10",
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"placeholder": "",
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"renderType": "datapath",
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"required": false
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}
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],
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"label": "passthrough",
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"name": "passthrough"
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}
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},
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"utilityType": "custom_function",
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"values": {
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"passthrough": {
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"input_1": null,
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"input_10": null,
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"input_2": null,
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"input_3": null,
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"input_4": null,
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"input_5": null,
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"input_6": null,
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"input_7": null,
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"input_8": null,
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"input_9": null
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}
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}
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},
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"errors": {},
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"id": "6",
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"type": "utility",
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"userCode": "\n bash_script = r\"\"\"\n#!/bin/bash\n\n# This script is part of the Splunk SOAR playbook called internal_host_ssh_log4j_investigate. It gathers \n# system information as part of a unix endpoint investigation. The output is a human-readable log and a \n# set of .csv files to be copied back to SOAR\n\necho \"##############################################################\"\necho \"splunk_soar_internal_host_ssh_investigate.sh\"\necho \"##############################################################\"\necho \"\"\necho \"[+] Basic system configuration:\"\n\necho \"key,value\" > /tmp/basic_system_configuration.csv\n\necho \"hostname: $(uname -n | tr -d \"\\n\")\"\necho \"hostname,$(uname -n | tr -d \"\\n\")\" >> /tmp/basic_system_configuration.csv\n\necho \"current time: $(date +%F_%T)\"\necho \"current time,$(date +%F_%T)\" >> /tmp/basic_system_configuration.csv\n\necho \"IP address: $(ifconfig | grep -Eo 'inet (addr:)?([0-9]*\\.){3}[0-9]*' | grep -Eo '([0-9]*\\.){3}[0-9]*' | grep -v '127.0.0.1' | tr '\\n' ' ')\"\necho \"IP address,$(ifconfig | grep -Eo 'inet (addr:)?([0-9]*\\.){3}[0-9]*' | grep -Eo '([0-9]*\\.){3}[0-9]*' | grep -v '127.0.0.1' | tr '\\n' ' ')\" >> /tmp/basic_system_configuration.csv\n\necho \"OS release: $(cat /etc/*release | sort -u | tr \"\\n\" \";\")\"\necho \"OS release,$(cat /etc/*release | sort -u | tr \"\\n\" \";\")\" >> /tmp/basic_system_configuration.csv\n\necho \"OS issue: $(cat /etc/issue)\"\necho \"OS issue,$(cat /etc/issue)\" >> /tmp/basic_system_configuration.csv\n\necho \"OS kernel: $(uname -a)\"\necho \"OS kernel,$(uname -a)\" >> /tmp/basic_system_configuration.csv\n\necho \"\"\necho \"USER,PID,%CPU,%MEM,VSZ,RSS,TTY,STAT,START,TIME,COMMAND\" > /tmp/process_list.csv\necho \"$(ps aux)\" >> /tmp/process_list.csv\necho \"[+] Process list:\"\necho \"$(ps aux)\"\n\necho \"\"\necho \"UNIT,LOAD,ACTIVE,SUB,DESCRIPTION\" > /tmp/service_list.csv\necho \"$(systemctl)\" >> /tmp/service_list.csv\necho \"[+] Service list:\"\necho \"$(systemctl)\"\n\necho \"\"\necho \"$(last -a)\" > /tmp/login_history.csv\necho \"[+] login history:\"\necho \"$(last -a)\"\n\necho \"\"\necho \"$(ss -tunapl)\" > /tmp/open_sockets.csv\necho \"[+] Open sockets:\"\necho \"$(ss -tunapl)\"\n\necho \"\"\necho \"cron_job\" > /tmp/cron_jobs.csv\necho \"$(for user in $(cut -f1 -d: /etc/passwd); do crontab -u $user -l 2>/dev/null | grep -v '^#'; done)\" >> /tmp/cron_jobs.csv\necho \"[+] Cron jobs:\"\necho \"$(for user in $(cut -f1 -d: /etc/passwd); do crontab -u $user -l 2>/dev/null | grep -v '^#'; done)\"\n\necho \"\"\necho \"[+] Zip up the outputs ...\"\nzip -j /tmp/$1_ssh_output.zip /tmp/basic_system_configuration.csv /tmp/process_list.csv /tmp/service_list.csv /tmp/login_history.csv /tmp/open_sockets.csv /tmp/cron_jobs.csv\necho \"wrote zip file to /tmp/$1_ssh_output.zip; next we will copy it back to SOAR\"\n\"\"\"\n\n file_name = 'splunk_soar_internal_host_ssh_investigate.sh'\n file_path = '/opt/phantom/vault/tmp/{}'.format(file_name)\n with open(file_path, 'w') as bash_script_file:\n bash_script_file.write(bash_script)\n \n success, message, vault_id = phantom.vault_add(file_location=file_path, file_name=file_name)\n parameters = [{'input_1': vault_id}]\n \n",
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"x": 480,
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"y": 119.99999999999977
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},
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"7": {
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"data": {
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"action": "put file",
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"actionType": "generic",
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"advanced": {
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"customName": "upload bash script",
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"customNameId": 0,
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"join": []
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},
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"connector": "SSH",
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"connectorConfigs": [
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"ssh"
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],
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"connectorId": "d37aa7fe-c973-44ee-a164-2ca5bf321b1f",
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"connectorVersion": "v1",
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"functionId": 1,
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"functionName": "upload_bash_script",
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"id": "7",
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"parameters": {
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"file_destination": "/tmp/",
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"ip_hostname": "playbook_input:ip_or_hostname",
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"vault_id": "write_embedded_bash_script_to_vault:custom_function_result.data.*.item"
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},
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"requiredParameters": [
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"vault_id",
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"ip_hostname",
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"file_destination"
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],
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"type": "action"
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},
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"errors": {},
|
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"id": "7",
|
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"type": "action",
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"x": 480,
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"y": 219.99999999999994
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},
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"8": {
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"data": {
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"action": "execute program",
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"actionType": "generic",
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"advanced": {
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"customName": "run bash script",
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"customNameId": 0,
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"join": []
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},
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"connector": "SSH",
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"connectorConfigs": [
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"ssh"
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],
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"connectorId": "d37aa7fe-c973-44ee-a164-2ca5bf321b1f",
|
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"connectorVersion": "v1",
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"functionId": 1,
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"functionName": "run_bash_script",
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"id": "8",
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"parameters": {
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"command": "bash /tmp/splunk_soar_internal_host_ssh_investigate.sh",
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"ip_hostname": "playbook_input:ip_or_hostname"
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},
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"requiredParameters": [
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"ip_hostname"
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],
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"type": "action"
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},
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"errors": {},
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"id": "8",
|
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"type": "action",
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"userCode": "\n # pass the ip_hostname as an argument so it can be used in the output zip file name\n for parameter in parameters:\n parameter['command'] = parameter['command'] + ' ' + parameter['ip_hostname']\n\n",
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"x": 480,
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"y": 320
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},
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"9": {
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"data": {
|
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"action": "get file",
|
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"actionType": "investigate",
|
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"advanced": {
|
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"customName": "get output zip file",
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"customNameId": 0,
|
|
"join": []
|
|
},
|
|
"connector": "SSH",
|
|
"connectorConfigs": [
|
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"ssh"
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],
|
|
"connectorId": "d37aa7fe-c973-44ee-a164-2ca5bf321b1f",
|
|
"connectorVersion": "v1",
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"functionId": 1,
|
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"functionName": "get_output_zip_file",
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"id": "9",
|
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"parameters": {
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"file_path": "playbook_input:ip_or_hostname",
|
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"ip_hostname": "playbook_input:ip_or_hostname"
|
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},
|
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"requiredParameters": [
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"file_path",
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"ip_hostname"
|
|
],
|
|
"type": "action"
|
|
},
|
|
"errors": {},
|
|
"id": "9",
|
|
"type": "action",
|
|
"userCode": "\n for parameter in parameters:\n parameter['file_path'] = '/tmp/' + parameter['file_path'] + '_ssh_output.zip'\n\n",
|
|
"x": 480,
|
|
"y": 420
|
|
}
|
|
},
|
|
"notes": "This playbook uses the following Apps:\n - SSH (execute program, list firewall rules, list connections, list processes, get file, put file) [asset name = ssh] - investigate behavior on the host\nDeployment Notes:\n - The ssh asset requires sudo access to view the processes with open sockets\n - The command line argument to the script is the ip_or_hostname, which will be used to name the zip file as output\n - To add a new data collection, pipe the output to a file and include it in the zip command"
|
|
},
|
|
"input_spec": [
|
|
{
|
|
"contains": [
|
|
"host name",
|
|
"ip"
|
|
],
|
|
"description": "IP address or hostname of the internal host to investigate",
|
|
"name": "ip_or_hostname"
|
|
}
|
|
],
|
|
"output_spec": null,
|
|
"playbook_type": "data",
|
|
"python_version": "3",
|
|
"schema": "5.0.4",
|
|
"version": "5.1.0.70187"
|
|
},
|
|
"create_time": "2021-12-15T22:32:03.384311+00:00",
|
|
"draft_mode": false,
|
|
"labels": [
|
|
"*"
|
|
],
|
|
"tags": [
|
|
"unix",
|
|
"internal_host",
|
|
"log4j",
|
|
"investigate"
|
|
]
|
|
} |