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Description

This search detects the creation of a new Federation setting by alerting about an specific event related to its creation.

  • Type: TTP

  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud

  • Last Updated: 2022-02-03
  • Author: Rod Soto, Splunk
  • ID: 1668812a-6047-11eb-ae93-0242ac130002

Annotations

ATT&CK
ID Technique Tactic
T1136.003 Cloud Account Persistence
T1136 Create Account Persistence
Kill Chain Phase
  • Exploitation
NIST
CIS20
CVE 
1
2
3
4
5

`o365_management_activity` Workload=AzureActiveDirectory Operation="Add service principal credentials." 
| stats min(_time) as firstTime max(_time) as lastTime values(Actor{}.ID) as Actor.ID values(ModifiedProperties{}.Name) as ModifiedProperties.Name values(ModifiedProperties{}.NewValue) as ModifiedProperties.NewValue values(Target{}.ID) as Target.ID by ActorIpAddress Operation 
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)` 
| `o365_added_service_principal_filter`

Macros

The SPL above uses the following Macros:

Note that o365_added_service_principal_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.

Required field

  • _time
  • Workload
  • signature
  • Actor{}.ID
  • ModifiedProperties{}.Name
  • ModifiedProperties{}.NewValue
  • Target{}.ID
  • ActorIpAddress

How To Implement

You must install splunk Microsoft Office 365 add-on. This search works with o365:management:activity

Known False Positives

The creation of a new Federation is not necessarily malicious, however these events need to be followed closely, as it may indicate federated credential abuse or backdoor via federated identities at a different cloud provider.

Associated Analytic story

RBA

Risk Score Impact Confidence Message
42.0 70 60 User $Actor.ID$ created a new federation setting on $Target.ID$ and added service principal credentials from IP Address $ActorIpAddress$

Reference

Test Dataset

Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

source | version: 1