[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 = "2023/09/22"

[rule]
author = ["Elastic"]
description = '''
This rule identifies a potential network sweep.  A network sweep is a method used by attackers to scan a target
network, identifying active hosts, open ports, and available services to gather information on vulnerabilities and
weaknesses. This reconnaissance helps them plan subsequent attacks and exploit potential entry points for unauthorized
access, data theft, or other malicious activities. This rule proposes threshold logic to check for connection attempts
from one source host to 10 or more destination hosts on commonly used network services.
'''
from = "now-9m"
index = ["packetbeat-*", "auditbeat-*", "filebeat-*", "logs-network_traffic.*", "logs-endpoint.events.network-*",]
language = "kuery"
license = "Elastic License v2"
max_signals = 5
name = "Potential Network Sweep Detected"
risk_score = 21
rule_id = "781f8746-2180-4691-890c-4c96d11ca91d"
severity = "low"
tags = ["Domain: Network",
        "Tactic: Discovery",
        "Tactic: Reconnaissance",
        "Use Case: Network Security Monitoring"
        ]
type = "threshold"
query = '''
destination.port : (21 or 22 or 23 or 25 or 139 or 445 or 3389 or 5985 or 5986) and 
source.ip : (10.0.0.0/8 or 172.16.0.0/12 or 192.168.0.0/16)
'''

[[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 = ["source.ip"]
value = 1
[[rule.threshold.cardinality]]

field = "destination.ip"
value = 100