Detection rules › Kusto
Apache - Multiple server errors from single IP
'Detects multiple server errors from one source in short timeframe'
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | |
| Impact |
Rule body
id: 1bf246a2-3af9-11ec-8d3d-0242ac130003
name: Apache - Multiple server errors from single IP
description: |
'Detects multiple server errors from one source in short timeframe'
severity: Medium
status: Available
requiredDataConnectors:
- connectorId: CustomLogsAma
datatypes:
- ApacheHTTPServer_CL
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
- Impact
- InitialAccess
relevantTechniques:
- T1498
- T1190
- T1133
query: |
let threshold = 100;
ApacheHTTPServer
| where HttpStatusCode >= 500 and HttpStatusCode <= 599
| summarize MultipleServerErrors = count() by SrcIpAddr, bin(TimeGenerated, 5m)
| where MultipleServerErrors > threshold
| extend IPCustomEntity = SrcIpAddr
entityMappings:
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
version: 1.0.3
kind: Scheduled
Stages and Predicates
Parameters
let threshold = 100;
Stage 1: source
ApacheHTTPServer
Stage 2: where
| where HttpStatusCode >= 500 and HttpStatusCode <= 599
Stage 3: summarize
| summarize MultipleServerErrors = count() by SrcIpAddr, bin(TimeGenerated, 5m)
Stage 4: where
| where MultipleServerErrors > threshold
Stage 5: extend
| extend IPCustomEntity = SrcIpAddr
Indicators
These rows show field, operator, and value matches.
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
MultipleServerErrors | summarize |
SrcIpAddr | summarize |
IPCustomEntity | extend |