Detection rules › Kusto
Cisco Cloud Security - URI contains IP address
'Malware can use IP address to communicate with C2.'
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control | |
| Exfiltration |
Rule body
id: ee1818ec-5f65-4991-b711-bcf2ab7e36c3
name: Cisco Cloud Security - URI contains IP address
description: |
'Malware can use IP address to communicate with C2.'
severity: Medium
status: Available
requiredDataConnectors:
- connectorId: CiscoUmbrellaDataConnector
dataTypes:
- Cisco_Umbrella_proxy_CL
queryFrequency: 10m
queryPeriod: 10m
triggerOperator: gt
triggerThreshold: 0
tactics:
- CommandAndControl
- Exfiltration
relevantTechniques:
- T1071
- T1567
query: |
Cisco_Umbrella
| where EventType == 'proxylogs'
| where DvcAction =~ 'Allowed'
| where UrlOriginal matches regex @'\Ahttp:\/\/\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}.*'
| project TimeGenerated, SrcIpAddr, DstIpAddr, UrlOriginal, Identities
entityMappings:
- entityType: URL
fieldMappings:
- identifier: Url
columnName: UrlOriginal
- entityType: IP
fieldMappings:
- identifier: Address
columnName: SrcIpAddr
version: 1.1.2
kind: Scheduled
Stages and Predicates
Stage 1: source
Cisco_Umbrella
Stage 2: where
| where EventType == 'proxylogs'
Stage 3: where
| where DvcAction =~ 'Allowed'
Stage 4: where
| where UrlOriginal matches regex @'\Ahttp:\/\/\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}.*'
Stage 5: project
| project TimeGenerated, SrcIpAddr, DstIpAddr, UrlOriginal, Identities
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
DvcAction | eq |
| field:"DvcAction" kind:eq value:"Allowed" |
EventType | eq |
| field:"EventType" kind:eq value:"proxylogs" |
UrlOriginal | regex_match |
| field:"UrlOriginal" kind:regex_match value:"\Ahttp:\/\/\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}.*" |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
DstIpAddr | project |
Identities | project |
SrcIpAddr | project |
TimeGenerated | project |
UrlOriginal | project |