command_and_control_rdp_tunnel_plink.toml

[metadata]
creation_date = "2020/10/14"
maturity = "production"
updated_date = "2021/09/23"

[rule]
author = ["Elastic"]
description = """
Identifies potential use of an SSH utility to establish RDP over a reverse SSH Tunnel. This can be used by attackers to
enable routing of network packets that would otherwise not reach their intended destination.
"""
from = "now-9m"
index = ["logs-endpoint.events.*", "winlogbeat-*", "logs-windows.*"]
language = "eql"
license = "Elastic License v2"
name = "Potential Remote Desktop Tunneling Detected"
references = ["https://blog.netspi.com/how-to-access-rdp-over-a-reverse-ssh-tunnel/"]
risk_score = 73
rule_id = "76fd43b7-3480-4dd9-8ad7-8bd36bfad92f"
severity = "high"
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Command and Control"]
timestamp_override = "event.ingested"
type = "eql"

query = '''
process where event.type in ("start", "process_started") and
  /* RDP port and usual SSH tunneling related switches in command line */
  process.args : "*:3389" and
  process.args : ("-L", "-P", "-R", "-pw", "-ssh")
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1572"
name = "Protocol Tunneling"
reference = "https://attack.mitre.org/techniques/T1572/"

[rule.threat.tactic]
id = "TA0011"
name = "Command and Control"
reference = "https://attack.mitre.org/tactics/TA0011/"