Detection rules › Kusto

Digital Guardian - Multiple incidents from user

Status
available
Severity
high
Time window
30m
Group by
SrcUserName
Source
github.com/Azure/Azure-Sentinel

'Detects multiple incidents from user.'

MITRE ATT&CK coverage

Rule body

id: e8901dac-2549-4948-b793-5197a5ed697a
name: Digital Guardian - Multiple incidents from user
description: |
  'Detects multiple incidents from user.'
severity: High
status: Available
requiredDataConnectors:
  - connectorId: SyslogAma
    datatypes:
      - Syslog
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Exfiltration
relevantTechniques:
  - T1048
query: |
  let threshold = 2;
  DigitalGuardianDLPEvent
  | where isnotempty(MatchedPolicies)
  | summarize count() by SrcUserName, bin(TimeGenerated, 30m)
  | where count_ >= threshold
  | extend AccountCustomEntity = SrcUserName
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: Name
        columnName: AccountCustomEntity
version: 1.0.2
kind: Scheduled

Stages and Predicates

Parameters

let threshold = 2;

Stage 1: source

DigitalGuardianDLPEvent

Stage 2: where

| where isnotempty(MatchedPolicies)

Stage 3: summarize

| summarize count() by SrcUserName, bin(TimeGenerated, 30m)

Stage 4: where

| where count_ >= threshold

Stage 5: extend

| extend AccountCustomEntity = SrcUserName

Indicators

These rows show field, operator, and value matches.

Output fields

These fields are emitted when the rule matches.

FieldSource
SrcUserNamesummarize
AccountCustomEntityextend