Detection rules › Sigma
OpenCanary - Telnet Login Attempt
Detects instances where a Telnet service on an OpenCanary node has had a login attempt.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | T1078 Valid Accounts, T1133 External Remote Services |
| Persistence | T1078 Valid Accounts, T1133 External Remote Services |
| Privilege Escalation | T1078 Valid Accounts |
| Stealth | T1078 Valid Accounts |
Rule body yaml
title: OpenCanary - Telnet Login Attempt
id: 512cff7a-683a-43ad-afe0-dd398e872f36
status: test
description: Detects instances where a Telnet service on an OpenCanary node has had a login attempt.
references:
- https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
- https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
- attack.privilege-escalation
- attack.persistence
- attack.initial-access
- attack.command-and-control
- attack.stealth
- attack.t1133
- attack.t1078
logsource:
category: application
product: opencanary
detection:
selection:
logtype: 6001
condition: selection
falsepositives:
- Unlikely
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
logtype: 6001
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
logtype | eq |
|