Apache - Request from private IP

Status: available
Severity: medium
Time window: 1h
Source: github.com/Azure/Azure-Sentinel

'Detects requests from private IP'

MITRE ATT&CK coverage

Tactic	Techniques
Initial Access	`T1133` External Remote Services `T1190` Exploit Public-Facing Application
Impact	`T1498` Network Denial of Service

Rule body

id: a0077556-3aff-11ec-8d3d-0242ac130003
name: Apache - Request from private IP
description: |
  'Detects requests from private IP'
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: |
  ApacheHTTPServer
  | where ipv4_is_private(SrcIpAddr)
  | extend IPCustomEntity = SrcIpAddr
entityMappings:
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: IPCustomEntity
version: 1.0.2
kind: Scheduled

Stages and Predicates

Stage 1: `source`

ApacheHTTPServer

Stage 2: `where`

| where ipv4_is_private(SrcIpAddr)

Stage 3: `extend`

| extend IPCustomEntity = SrcIpAddr

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`SrcIpAddr`	cidr_match	`10.0.0.0/8` `127.0.0.0/8` `169.254.0.0/16` `172.16.0.0/12` `192.168.0.0/16`	`field:"src_ip" kind:cidr_match`

Output fields

These fields are emitted when the rule matches.

Field	Source
`IPCustomEntity`	`extend`

Apache - Request from private IP

MITRE ATT&CK coverage

Rule body

Stages and Predicates

Stage 1: source

Stage 2: where

Stage 3: extend

Indicators

Output fields

Stage 1: `source`

Stage 2: `where`

Stage 3: `extend`