OpenCanary application telemetry: HTTP GET requests received by monitored service
Alerts when OpenCanary logs an HTTP GET request to a monitored service endpoint.
FreeReviewedSigma · High · v5
- Product
- opencanary
- Category
- application
- Author
- Security Onion Solutions (SigmaHQ), DRL 1.1
- Published
- 2024-03-08
- Updated
- 2026-07-31
ATT&CK techniques
Initial AccessRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule flags events from an OpenCanary node where the monitored HTTP service received an HTTP GET request. GET traffic can indicate reconnaissance or attempts to access the service endpoint, even when no credentials are involved. The detection relies on OpenCanary application logs containing an event with the HTTP request log type value that corresponds to GET handling.
Reporting behind it
- opencanary.readthedocs.iohttps://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
- github.comhttps://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
- github.comhttps://github.com/SigmaHQ/sigma/blob/master/rules/application/opencanary/opencanary_http_get.yml
Changelog
v5- v5Candidate ingested via manual entry.2026-07-31
- v4Candidate ingested via manual entry.2026-07-31
- v3Candidate ingested via manual entry.2026-07-31
- v2Candidate ingested via manual entry.2026-07-31
- v1No changelog recorded for this version.2026-07-30
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
opencanary-http-get-request-received-on-service-port-af6c3078
title: "OpenCanary application telemetry: HTTP GET requests received by monitored service"
id: 5d8796a0-b4a2-4498-8bf5-ae7c2c6f1c8f
status: test
description: This rule flags events from an OpenCanary node where the monitored HTTP service received an HTTP GET request. GET traffic can indicate reconnaissance or attempts to access the service endpoint, even when no credentials are involved. The detection relies on OpenCanary application logs containing an event with the HTTP request log type value that corresponds to GET handling.
references:
- https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
- https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
- https://github.com/SigmaHQ/sigma/blob/master/rules/application/opencanary/opencanary_http_get.yml
author: Security Onion Solutions, Huntrule Team
date: 2024-03-08
tags:
- attack.initial-access
- attack.t1190
logsource:
category: application
product: opencanary
detection:
selection:
logtype: 3000
condition: selection
falsepositives:
- Unlikely
level: high
license: DRL-1.1
related:
- id: af6c3078-84cd-4c68-8842-08b76bd81b13
type: derived