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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 Tue, 2021 Oct 19 00:29:17 EDT, from rule_dump.json (db47c470500ce8686ead334f5eda0596)