Synopsis
Activation Period |
14 Days |
Training Period |
30 Days |
Test Period |
N/A (single event) |
Deduplication Period |
1 Day |
Required Data |
|
Detection Modules |
Identity Threat Module |
Detector Tags |
Microsoft Teams |
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Informational |
Description
An external user added a link to a Microsoft Teams chat.
Attacker's Goals
Attackers may leverage Microsoft Teams to conduct phishing attacks by exploiting trusted communication channels with users inside the organization.
Investigative actions
- Confirm that the external tenant and user are authorized to share links or files with users in the organization.
- Verify the content of the conversation and validate that there is no phishing attempt being made.
- Inspect links and URLs that have been sent in the conversation.
- Evaluate the external domain reputation.
- Review past communication from the external user.
- Follow further actions done by the account.