Potential Successful Linux RDP Brute Force Attack Detected
editPotential Successful Linux RDP Brute Force Attack Detected
editAn RDP (Remote Desktop Protocol) brute force attack involves an attacker repeatedly attempting various username and password combinations to gain unauthorized access to a remote computer via RDP, and if successful, the potential impact can include unauthorized control over the compromised system, data theft, or the ability to launch further attacks within the network, jeopardizing the security and confidentiality of the targeted system and potentially compromising the entire network infrastructure. This rule identifies multiple consecutive authentication failures targeting a specific user account within a short time interval, followed by a successful authentication.
Rule type: eql
Rule indices:
- auditbeat-*
- logs-auditd_manager.auditd-*
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
Version: 4
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editsequence by host.id, related.user with maxspan=5s [authentication where host.os.type == "linux" and event.dataset == "auditd_manager.auditd" and event.action == "authenticated" and auditd.data.terminal : "*rdp*" and event.outcome == "failure"] with runs=10 [authentication where host.os.type == "linux" and event.dataset == "auditd_manager.auditd" and event.action == "authenticated" and auditd.data.terminal : "*rdp*" and event.outcome == "success"] | tail 1
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/
-
Sub-technique:
- Name: Password Spraying
- ID: T1110.003
- Reference URL: https://attack.mitre.org/techniques/T1110/003/