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This query detects attempts to add attacker devices as allowed IDs for active sync using the Set-CASMailbox command. This technique was seen in relation to Solorigate attack but the results can indicate potential malicious activity used in different attacks. - Note that this query can be changed to use the KQL "has_all" operator, which hasn't yet been documented officially, but will be soon. In short, "has_all" will only match when the referenced field has all strings in the list. - Refer to S
| Attribute | Value |
|---|---|
| Type | Analytic Rule |
| Solution | Standalone Content |
| ID | 2f561e20-d97b-4b13-b02d-18b34af6e87c |
| Severity | Medium |
| Kind | Scheduled |
| Tactics | PrivilegeEscalation |
| Techniques | T1068, T1078 |
| Required Connectors | SecurityEvents, MicrosoftThreatProtection, WindowsSecurityEvents, WindowsForwardedEvents |
| Source | View on GitHub |
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