Detection rules › Kusto
ApexOne - Multiple deny or terminate actions on single IP
'Detects multiple deny or terminate actions on single IP.'
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access |
Rule body
id: cd94e078-67b7-11ec-90d6-0242ac120003
name: ApexOne - Multiple deny or terminate actions on single IP
description: |
'Detects multiple deny or terminate actions on single IP.'
severity: High
status: Available
requiredDataConnectors:
- connectorId: CefAma
dataTypes:
- CommonSecurityLog
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
- InitialAccess
relevantTechniques:
- T1190
query: |
let threshold = 5;
TMApexOneEvent
| where EventMessage has "Behavior Monitoring"
| where DvcAction == 2 or DvcAction == 3
| summarize count() by SrcIpAddr, bin(TimeGenerated, 10m)
| where count_ > threshold
| extend IPCustomEntity = SrcIpAddr
entityMappings:
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
version: 1.0.3
kind: Scheduled
Stages and Predicates
Parameters
let threshold = 5;
Stage 1: source
TMApexOneEvent
Stage 2: where
| where EventMessage has "Behavior Monitoring"
Stage 3: where
| where DvcAction == 2 or DvcAction == 3
Stage 4: summarize
| summarize count() by SrcIpAddr, bin(TimeGenerated, 10m)
Stage 5: where
| where count_ > threshold
Stage 6: extend
| extend IPCustomEntity = SrcIpAddr
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
DvcAction | eq |
| field:"DvcAction" kind:eq |
EventMessage | match |
| field:"EventMessage" kind:match value:"Behavior Monitoring" |
count_ | gt |
| field:"count_" kind:gt value:"5" |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
SrcIpAddr | summarize |
IPCustomEntity | extend |