IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Outgoing RDP Connection by Unusual Process
editPotential Outgoing RDP Connection by Unusual Process
editAdversaries may attempt to connect to a remote system over Windows Remote Desktop Protocol (RDP) to achieve lateral movement. Adversaries may avoid using the Microsoft Terminal Services Client (mstsc.exe) binary to establish an RDP connection to evade detection.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
Severity: low
Risk score: 21
Runs every: 60m
Searches indices from: now-119m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References: None
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Lateral Movement
- Data Source: Elastic Defend
Version: 1
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editnetwork where host.os.type == "windows" and event.action == "connection_attempted" and destination.port == 3389 and not process.executable : "?:\\Windows\\System32\\mstsc.exe" and destination.ip != "::1" and destination.ip != "127.0.0.1"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Lateral Movement
- ID: TA0008
- Reference URL: https://attack.mitre.org/tactics/TA0008/
-
Technique:
- Name: Remote Services
- ID: T1021
- Reference URL: https://attack.mitre.org/techniques/T1021/
-
Sub-technique:
- Name: Remote Desktop Protocol
- ID: T1021.001
- Reference URL: https://attack.mitre.org/techniques/T1021/001/