Teams_Modification
ID: 100202
Description:
Channel Modification in Microsoft Teams - KLK
Repository: Fluency Group: Office365 Type: event
Default Status:
Enabled
| Tags: | |
|---|---|
| O365 | Teams |
Selector:
Query:
Filters:
| Field | MUST hit |
|---|---|
| @sender | office365 |
| @fields.Operation | TabUpdated |
| TeamSettingsChanged | |
| ConnectorAdded | |
| ChannelSettingChanged | |
| @fields.Workload | SkypeForBusiness |
| MicrosoftTeams |
| Field | MUST NOT hit |
|---|---|
Behavior Rule:
| Key | Type | Behavior Category |
|---|---|---|
| @fields.UserId | username | security alert |
Risks:
| Risks | Base Score | Dimension |
|---|---|---|
| Timeline | 0 | - |
Attributes:
| Alias | Key |
|---|---|
| IP | @fields.ClientIP |
| City | @fields._ip.city |
| Country | @fields._ip.country |
| UserName | @fields.UserId |
| Message | @message |
| TeamName | @fields.TeamName |
| Operation | @fields.Operation |
| ISP | @fields._ip.isp |
Correlation Rules:
First Occurrence:
| Name | Window | Fields |
|---|---|---|
| NewUser | 2 days | @fields.UserId |
| Risks: | ML_NEW_USER | |
| NewCountry | 20 days | @fields._ip.country |
| Risks: | ML_NEW_GEO_COUNTRY | |
| NewISP | 20 days | @fields._ip.isp |
| Risks: | SUSPICIOUS_GEO |
Aggregation:
| Name | Window | Field | AggType | Match |
|---|---|---|---|---|
| MultipleTeamsModifications | 1 hour | @fields.TeamName | cardinality | gt 2 |
History:
| User | Date |
|---|---|
| ke*y@fluencysecurity.com | 2021 Mar 15 08:53:04 EDT |
| ku*n@fluencysecurity.com | 2021 Sep 15 17:12:33 EDT |
This page was automatically created/formatted on Wed, 2022 May 4 21:43:53 EDT, from rule_dump.json (4d88bffdfb1cea26b3985f2193033606)