NGINX - Command in URI

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Id	d84739ce-2f46-4391-b25e-a2edbea19d7e
Rulename	NGINX - Command in URI
Description	Detects command in URI
Severity	High
Tactics	InitialAccess
Techniques	T1190 T1133
Required data connectors	CustomLogsAma
Kind	Scheduled
Query frequency	10m
Query period	10m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NGINX HTTP Server/Analytic Rules/NGINXCommandsInRequest.yaml
Version	1.0.3
Arm template	d84739ce-2f46-4391-b25e-a2edbea19d7e.json

KQL

let cmd_list = dynamic(['cat%20/etc/passwd', '/etc/passwd', 'ping -i', '/usr/bin/id(', '%2f%75%73%72%2f%62%69%6e%2f%69%64', 'phpinfo()', '%70%68%70%69%6e%66%6f%28%29', ';id', '%3b%69%64', '/bin/bash -c', '%2f%62%69%6e%2f%62%61%73%68%20%2d%63%27', '/bin/bash', '%2f%62%69%6e%2f%62%61%73%68', 'sleep(', '%73%6c%65%65%70%28', 'curl', '%63%75%72%6c', '&dir', '%26%64%69%72', '& dir', '%26%20%64%69%72', '<script>', '%3c%73%63%72%69%70%74%3e', 'eval(', '%65%76%61%6c%28', 'exec(', '%65%78%65%63%28', 'whoami', '%77%68%6f%61%6d%69', 'wget', 'python', 'gcc', 'uname', 'systeminfo', '%77%67%65%74', '%70%79%74%68%6f%6e', '%75%6e%61%6d%65', '%73%79%73%74%65%6d%69%6e%66%6f']);
NGINXHTTPServer
| where UrlOriginal has_any (cmd_list)
| extend UrlCustomEntity = UrlOriginal

YAML

description: |
    'Detects command in URI'
version: 1.0.3
triggerThreshold: 0
tactics:
- InitialAccess
queryPeriod: 10m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NGINX HTTP Server/Analytic Rules/NGINXCommandsInRequest.yaml
triggerOperator: gt
status: Available
id: d84739ce-2f46-4391-b25e-a2edbea19d7e
name: NGINX - Command in URI
queryFrequency: 10m
severity: High
kind: Scheduled
entityMappings:
- fieldMappings:
  - columnName: UrlCustomEntity
    identifier: Url
  entityType: URL
relevantTechniques:
- T1190
- T1133
query: |
  let cmd_list = dynamic(['cat%20/etc/passwd', '/etc/passwd', 'ping -i', '/usr/bin/id(', '%2f%75%73%72%2f%62%69%6e%2f%69%64', 'phpinfo()', '%70%68%70%69%6e%66%6f%28%29', ';id', '%3b%69%64', '/bin/bash -c', '%2f%62%69%6e%2f%62%61%73%68%20%2d%63%27', '/bin/bash', '%2f%62%69%6e%2f%62%61%73%68', 'sleep(', '%73%6c%65%65%70%28', 'curl', '%63%75%72%6c', '&dir', '%26%64%69%72', '& dir', '%26%20%64%69%72', '<script>', '%3c%73%63%72%69%70%74%3e', 'eval(', '%65%76%61%6c%28', 'exec(', '%65%78%65%63%28', 'whoami', '%77%68%6f%61%6d%69', 'wget', 'python', 'gcc', 'uname', 'systeminfo', '%77%67%65%74', '%70%79%74%68%6f%6e', '%75%6e%61%6d%65', '%73%79%73%74%65%6d%69%6e%66%6f']);
  NGINXHTTPServer
  | where UrlOriginal has_any (cmd_list)
  | extend UrlCustomEntity = UrlOriginal  
requiredDataConnectors:
- dataTypes:
  - NGINX_CL
  connectorId: CustomLogsAma

ARM