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Developing

Notes for managing and internal development

Transforms

Transforms are data structures within rules which will be integrated into other fields at build time for rules, meaning they are not directly converted.

CLI

There are some helper commands to assist with converting transforms into the excpected rule TOML format

  • create transform in Kibana
  • export it (or copy it)
  • run the following commmand and paste them (multiple)
  • copy and paste into rule, with minor format changes if needed
(detection_dev) ➜  detection-rules git:(initial_inv_queries) python -m detection_rules dev transforms guide-plugin-convert

█▀▀▄ ▄▄▄ ▄▄▄ ▄▄▄ ▄▄▄ ▄▄▄ ▄▄▄ ▄▄▄ ▄   ▄      █▀▀▄ ▄  ▄ ▄   ▄▄▄ ▄▄▄
█  █ █▄▄  █  █▄▄ █    █   █  █ █ █▀▄ █      █▄▄▀ █  █ █   █▄▄ █▄▄
█▄▄▀ █▄▄  █  █▄▄ █▄▄  █  ▄█▄ █▄█ █ ▀▄█      █ ▀▄ █▄▄█ █▄▄ █▄▄ ▄▄█

Enter plugin contents []: !{investigate{"label":"Alerts associated with the host in the last 48h","providers":[[{"field":"event.kind","excluded":false,"queryType":"phrase","value":"signal","valueType":"string"},{"field":"host.name","excluded":false,"queryType":"phrase","value":"{{host.name}}","valueType":"string"}]],"relativeFrom":"now-48h/h","relativeTo":"now"}}
[transform]

[[transform.investigate]]
label = "Alerts associated with the host in the last 48h"
providers = [[{field = "event.kind", excluded = false, queryType = "phrase", value = "signal", valueType = "string"}, {field = "host.name", excluded = false, queryType = "phrase", value = "{{host.name}}", valueType = "string"}]]
relativeFrom = "now-48h/h"
relativeTo = "now"

Other transform suppoprt can be found under

python -m detection-rules dev transforms -h

Using the RuleResource methods built on detections _bulk_action APIs

The following is meant to serve as a simple example of to use the methods

import kibana
from kibana import definitions

rids = ['40e1f208-aaaa-bbbb-98ea-378ccf504ad3', '5e9bc07c-cccc-dddd-a6c0-1cae4a0d256e']

# with TypedDict, either is valid, both with static type checking
set_tags = definitions.RuleBulkSetTags(type='set_tags', value=['tag1', 'tag2'])
delete_tags: definitions.RuleBulkDeleteTags = {'type': 'delete_tags', 'value': ['tag1', 'tag2']}

with kibana:
    r1 = RuleResource.bulk_enable(rids, dry_run=True)
    r2 = RuleResource.bulk_disable(rids, dry_run=True)
    r3 = RuleResource.bulk_duplicate(rids, dry_run=True)
    r4 = RuleResource.bulk_export(rids)
    r5 = RuleResource.bulk_edit(edit_object=[set_tags, delete_tags], rule_ids=rids, dry_run=True)
    r6 = RuleResource.bulk_delete(rids, dry_run=True)