Detection rules › Kusto
Zoom E2E Encryption Disabled
'This alerts when end to end encryption is disabled for Zoom meetings.'
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Credential Access | |
| Discovery |
Rule body
id: e4779bdc-397a-4b71-be28-59e6a1e1d16b
name: Zoom E2E Encryption Disabled
description: |
'This alerts when end to end encryption is disabled for Zoom meetings.'
severity: Medium
requiredDataConnectors: []
queryFrequency: 1d
queryPeriod: 1d
triggerOperator: gt
triggerThreshold: 0
tactics:
- CredentialAccess
- Discovery
relevantTechniques:
- T1040
query: |
ZoomLogs
| where Event =~ "account.settings_updated"
| extend NewE2ESetting = columnifexists("payload_object_settings_in_meeting_e2e_encryption_b", "")
| extend OldE2ESetting = columnifexists("payload_old_object_settings_in_meeting_e2e_encryption_b", "")
| where OldE2ESetting =~ 'false' and NewE2ESetting =~ 'true'
| extend AccountName = tostring(split(User, "@")[0]), AccountUPNSuffix = tostring(split(User, "@")[1])
entityMappings:
- entityType: Account
fieldMappings:
- identifier: FullName
columnName: User
- identifier: Name
columnName: AccountName
- identifier: UPNSuffix
columnName: AccountUPNSuffix
version: 1.0.3
kind: Scheduled
metadata:
source:
kind: Community
author:
name: Microsoft Security Research
support:
tier: Community
categories:
domains: [ "Security - Others" ]
Stages and Predicates
Stage 1: source
ZoomLogs
Stage 2: where
| where Event =~ "account.settings_updated"
Stage 3: extend
| extend NewE2ESetting = columnifexists("payload_object_settings_in_meeting_e2e_encryption_b", "")
Stage 4: extend
| extend OldE2ESetting = columnifexists("payload_old_object_settings_in_meeting_e2e_encryption_b", "")
Stage 5: where
| where OldE2ESetting =~ 'false' and NewE2ESetting =~ 'true'
Stage 6: extend
| extend AccountName = tostring(split(User, "@")[0]), AccountUPNSuffix = tostring(split(User, "@")[1])
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Event | eq |
| field:"Event" kind:eq value:"account.settings_updated" |
NewE2ESetting | eq |
| field:"NewE2ESetting" kind:eq value:"true" |
OldE2ESetting | eq |
| field:"OldE2ESetting" kind:eq value:"false" |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
NewE2ESetting | extend |
OldE2ESetting | extend |
AccountName | extend |
AccountUPNSuffix | extend |