O365 Inbox Shared With All Users

Date: 2023-09-06 ID: 2751009e-d929-4f65-aee4-c1222b414305 Author: Mauricio Velazco Environment: attack_range Directory: o365_inbox_shared_with_all_users

Description

Manually provided inbox folder access to Anonymous. Tenant specific details have been replaced in the dataset including tenant id, user names, ips, etc.

MITRE ATT&CK Techniques

ID	Technique	Tactic
T1114.002	Remote Email Collection	Collection

Environment Details

Field	Value
Environment	attack_range
Directory	o365_inbox_shared_with_all_users
Test Date	2023-09-06

Datasets

The following datasets were collected during this attack simulation:

O365_inbox_shared_with_all_users

Path: /datasets/attack_techniques/T1114.002/o365_inbox_shared_with_all_users/o365_inbox_shared_with_all_users.log
Sourcetype: o365:management:activity
Source: o365

The following detections in our security content repository use this attack data for testing:

Detection Name	Type	Source	MITRE ATT&CK	Analytic Story
O365 Mailbox Inbox Folder Shared with All Users	`TTP`	Cloud	T1114.002	Office 365 Persistence Mechanisms

Usage Instructions

Replay with Splunk Attack Data

Replay attack data with replay.py from Splunk Attack Data.

1python replay.py --dataset /datasets/attack_techniques/T1114.002/o365_inbox_shared_with_all_users/o365_inbox_shared_with_all_users.log --index attack_data

Manual Import

Download the dataset files from the paths listed above
Configure your Splunk instance with the appropriate sourcetypes
Import the logs using the Splunk Add Data wizard

Find more detections and analytics for this attack technique in our security content repository.

Source: GitHub | Version: 1.0