OpenCanary HTTPPROXY Login Attempt Shows Proxied Page Access
Alerts on OpenCanary HTTPPROXY events indicating a proxy request for another page.
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
C2Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
Exfiltration
Impact
What it detects
This rule flags OpenCanary events where the HTTPPROXY service records an attempt to proxy another page. Attackers may use HTTP proxying to route or mask follow-on activity, so unexpected proxy login attempts can indicate probing or misuse of the service. It relies on OpenCanary application telemetry where the event type matches logtype 7001.
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_httpproxy_login_attempt.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-httpproxy-login-attempt-proxy-request-5498fc09
title: OpenCanary HTTPPROXY Login Attempt Shows Proxied Page Access
id: 96284676-0fad-4447-8986-b947edb65535
status: test
description: This rule flags OpenCanary events where the HTTPPROXY service records an attempt to proxy another page. Attackers may use HTTP proxying to route or mask follow-on activity, so unexpected proxy login attempts can indicate probing or misuse of the service. It relies on OpenCanary application telemetry where the event type matches logtype 7001.
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_httpproxy_login_attempt.yml
author: Security Onion Solutions, Huntrule Team
date: 2024-03-08
tags:
- attack.initial-access
- attack.command-and-control
- attack.t1090
logsource:
category: application
product: opencanary
detection:
selection:
logtype: 7001
condition: selection
falsepositives:
- Unlikely
level: high
license: DRL-1.1
related:
- id: 5498fc09-adc6-4804-b9d9-5cca1f0b8760
type: derived