IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Linux Local Account Brute Force Detectededit
Identifies multiple consecutive login attempts executed by one process targeting a local linux user account within a short time interval. Adversaries might brute force login attempts across different users with a default wordlist or a set of customly crafted passwords in an attempt to gain access to these accounts.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References: None
Tags:
- Domain: Endpoint
- OS: Linux
- Use Case: Threat Detection
- Tactic: Credential Access
- Data Source: Elastic Defend
Version: 4
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
sequence by host.id, process.parent.executable, user.id with maxspan=1s [process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and process.name == "su" and not process.parent.name in ( "bash", "dash", "ash", "sh", "tcsh", "csh", "zsh", "ksh", "fish", "clickhouse-server" )] with runs=10
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
-
Technique:
- Name: Brute Force
- ID: T1110
- Reference URL: https://attack.mitre.org/techniques/T1110/
-
Sub-technique:
- Name: Password Guessing
- ID: T1110.001
- Reference URL: https://attack.mitre.org/techniques/T1110/001/