Remco Sprooten
1283a21fb7
* [New Rules] Potential portscan detected * Updated descriptions * Update rules/network/discovery_potential_syn_port_scan_detected.toml Co-authored-by: Isai <59296946+imays11@users.noreply.github.com> * Update rules/network/discovery_potential_network_sweep_detected.toml Co-authored-by: Isai <59296946+imays11@users.noreply.github.com> * Update rules/network/discovery_potential_port_scan_detected.toml Co-authored-by: Isai <59296946+imays11@users.noreply.github.com> * updating integration manifests and schemas --------- Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> Co-authored-by: Isai <59296946+imays11@users.noreply.github.com> Co-authored-by: terrancedejesus <terrance.dejesus@elastic.co> Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
70 lines
2.3 KiB
TOML
70 lines
2.3 KiB
TOML
[metadata]
|
|
creation_date = "2023/05/17"
|
|
integration = ["endpoint", "network_traffic"]
|
|
maturity = "production"
|
|
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
|
|
min_stack_version = "8.3.0"
|
|
updated_date = "2023/05/26"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = '''
|
|
This rule identifies a potential port scan. A port scan is a method utilized by attackers to systematically scan a
|
|
target system or network for open ports, allowing them to identify available services and potential vulnerabilities.
|
|
By mapping out the open ports, attackers can gather critical information to plan and execute targeted attacks, gaining
|
|
unauthorized access, compromising security, and potentially leading to data breaches, unauthorized control, or further
|
|
exploitation of the targeted system or network. This rule proposes threshold logic to check for connection attempts
|
|
from one source host to 20 or more destination ports.
|
|
'''
|
|
from = "now-9m"
|
|
index = ["logs-endpoint.events.network-*", "logs-network_traffic.*", "packetbeat-*"]
|
|
language = "kuery"
|
|
license = "Elastic License v2"
|
|
name = "Potential Network Scan Detected"
|
|
|
|
risk_score = 47
|
|
rule_id = "0171f283-ade7-4f87-9521-ac346c68cc9b"
|
|
severity = "medium"
|
|
tags = ["Domain: Network", "Tactic: Discovery", "Tactic: Reconnaissance", "Use Case: Network Security Monitoring"]
|
|
type = "threshold"
|
|
|
|
query = '''
|
|
destination.port :* and event.action: ("network_flow" or "connection_accepted" or "connection_attempted" )
|
|
'''
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1046"
|
|
name = "Network Service Discovery"
|
|
reference = "https://attack.mitre.org/techniques/T1046/"
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0007"
|
|
name = "Discovery"
|
|
reference = "https://attack.mitre.org/tactics/TA0007/"
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1595"
|
|
name = "Active Scanning"
|
|
reference = "https://attack.mitre.org/techniques/T1595/"
|
|
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1595.001"
|
|
name = "Scanning IP Blocks"
|
|
reference = "https://attack.mitre.org/techniques/T1595/001/"
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0043"
|
|
name = "Reconnaissance"
|
|
reference = "https://attack.mitre.org/tactics/TA0043/"
|
|
|
|
[rule.threshold]
|
|
field = ["destination.ip", "source.ip"]
|
|
value = 1
|
|
[[rule.threshold.cardinality]]
|
|
field = "destination.port"
|
|
value = 20
|