Synopsis
Activation Period |
14 Days |
Training Period |
30 Days |
Test Period |
N/A (single event) |
Deduplication Period |
1 Day |
Required Data |
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Detection Modules |
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Detector Tags |
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ATT&CK Tactic |
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ATT&CK Technique |
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Severity |
Medium |
Description
An attacker may use PowerShell to change the Client Access Settings (CAS) for a mailbox, hence gaining access to the data.
Attacker's Goals
Gain access to the data in the compromised mailbox.
Investigative actions
- Examine the PowerShell command to identify which mailbox's access setting has been modified.
- verify that the change in the client access setting was executed by a trusted source.