Link Search Menu Expand Document

O365_Files_Accessed

ID: 100203

Description:

A user has previewed or downloaded more than 20 files in an hour

Repository: Fluency Group: Office365 Type: event

Default Status:

Enabled

Tags:
Office365
 

Selector:

Query:

Filters:

Field MUST hit
@sender office365
@fields.Operation FilePreviewed
  FileDownloaded
  FileAccessed
Field MUST NOT hit
   

Behavior Rule:

Key Type Behavior Category
@fields.UserId username application activity

Risks:

Risks Base Score Dimension
     

Attributes:

Alias Key
Operation @fields.Operation
Username @fields.UserId
Workload @fields.Workload
City @fields._ip.city
Country @fields._ip.country
FileName @fields.SourceFileName
ISP @fields._ip.isp

Correlation Rules:

Aggregation:

Name Window Field AggType Match
FilesAccessed 1 hour @fields.SourceFileName cardinality gt 40
  Risks: FILE_DOWNLOAD ALERT_POLICY  

History:

User Date
em*n@fluencysecurity.com 2021 Mar 16 03:01:08 EDT
em*n@fluencysecurity.com 2021 Mar 16 17:25:35 EDT
em*n@fluencysecurity.com 2021 Mar 16 17:29:19 EDT
em*n@fluencysecurity.com 2021 Mar 18 09:37:25 EDT
ho*d@fluencysecurity.com 2021 Jul 15 14:01:33 EDT
ho*d@fluencysecurity.com 2021 Jul 15 14:02:44 EDT
ho*d@fluencysecurity.com 2021 Aug 31 20:46:35 EDT

This page was automatically created/formatted on Tue, 2021 Oct 19 00:29:17 EDT, from rule_dump.json (db47c470500ce8686ead334f5eda0596)