Brent Murphy
627610401c
* update azure indicies * remove . in index to match prior cloud rules * update o365 indicies * add event.dataset:google_workspace.admin to existing google workspace rules * gcp syntax * add gcp index * update gcp index * update index patterns for google workspace rules * update gcp index2 * update updated_date * update event outcome for azure Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com>
52 lines
2.3 KiB
TOML
52 lines
2.3 KiB
TOML
[metadata]
|
||
creation_date = "2020/11/17"
|
||
maturity = "production"
|
||
updated_date = "2020/12/16"
|
||
|
||
[rule]
|
||
author = ["Elastic"]
|
||
description = """
|
||
Detects when a Google Workspace password policy is modified. An adversary may attempt to modify a password policy in
|
||
order to weaken an organization’s security controls.
|
||
"""
|
||
false_positives = [
|
||
"""
|
||
Password policies may be modified by system administrators. Verify that the configuration change was expected.
|
||
Exceptions can be added to this rule to filter expected behavior.
|
||
""",
|
||
]
|
||
from = "now-130m"
|
||
index = ["filebeat-*", "logs-google_workspace*"]
|
||
interval = "10m"
|
||
language = "kuery"
|
||
license = "Elastic License"
|
||
name = "Google Workspace Password Policy Modified"
|
||
note = """### Important Information Regarding Google Workspace Event Lag Times
|
||
- As per Google's documentation, Google Workspace administrators may observe lag times ranging from minutes up to 3 days between the time of an event's occurrence and the event being visible in the Google Workspace admin/audit logs.
|
||
- This rule is configured to run every 10 minutes with a lookback time of 130 minutes.
|
||
- To reduce the risk of false negatives, consider reducing the interval that the Google Workspace (formerly G Suite) Filebeat module polls Google's reporting API for new events.
|
||
- By default, `var.interval` is set to 2 hours (2h). Consider changing this interval to a lower value, such as 10 minutes (10m).
|
||
- See the following references for further information.
|
||
- https://support.google.com/a/answer/7061566
|
||
- https://www.elastic.co/guide/en/beats/filebeat/current/filebeat-module-gsuite.html"""
|
||
risk_score = 47
|
||
rule_id = "a99f82f5-8e77-4f8b-b3ce-10c0f6afbc73"
|
||
severity = "medium"
|
||
tags = ["Elastic", "Cloud", "Google Workspace", "Continuous Monitoring", "SecOps", "Identity and Access"]
|
||
type = "query"
|
||
|
||
query = '''
|
||
event.dataset:(gsuite.admin or google_workspace.admin) and
|
||
event.provider:admin and event.category:iam and
|
||
event.action:(CHANGE_APPLICATION_SETTING or CREATE_APPLICATION_SETTING) and
|
||
gsuite.admin.setting.name:(
|
||
"Password Management - Enforce strong password" or
|
||
"Password Management - Password reset frequency" or
|
||
"Password Management - Enable password reuse" or
|
||
"Password Management - Enforce password policy at next login" or
|
||
"Password Management - Minimum password length" or
|
||
"Password Management - Maximum password length"
|
||
)
|
||
'''
|
||
|