Justin Ibarra
46d5e37b76
* min_stack all rules to 8.3 * bump date Co-authored-by: Mika Ayenson <mika.ayenson@elastic.co>
54 lines
1.7 KiB
TOML
54 lines
1.7 KiB
TOML
[metadata]
|
|
creation_date = "2021/03/22"
|
|
maturity = "production"
|
|
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
|
|
min_stack_version = "8.3.0"
|
|
updated_date = "2022/08/24"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Identifies NullSessionPipe registry modifications that specify which pipes can be accessed anonymously. This could
|
|
be indicative of adversary lateral movement preparation by making the added pipe available to everyone.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["logs-endpoint.events.*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "NullSessionPipe Registry Modification"
|
|
references = [
|
|
"https://www.welivesecurity.com/2019/05/29/turla-powershell-usage/",
|
|
"https://docs.microsoft.com/en-us/windows/security/threat-protection/security-policy-settings/network-access-restrict-anonymous-access-to-named-pipes-and-shares",
|
|
]
|
|
risk_score = 47
|
|
rule_id = "ddab1f5f-7089-44f5-9fda-de5b11322e77"
|
|
severity = "medium"
|
|
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Lateral Movement"]
|
|
timestamp_override = "event.ingested"
|
|
type = "eql"
|
|
|
|
query = '''
|
|
registry where
|
|
registry.path : "HKLM\\SYSTEM\\*ControlSet*\\services\\LanmanServer\\Parameters\\NullSessionPipes" and
|
|
registry.data.strings != null
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1021"
|
|
name = "Remote Services"
|
|
reference = "https://attack.mitre.org/techniques/T1021/"
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1021.002"
|
|
name = "SMB/Windows Admin Shares"
|
|
reference = "https://attack.mitre.org/techniques/T1021/002/"
|
|
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0008"
|
|
name = "Lateral Movement"
|
|
reference = "https://attack.mitre.org/tactics/TA0008/"
|