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[New Rule] DNS Global Query Block List Modified or Disabled #3734
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79 changes: 79 additions & 0 deletions
79
rules/windows/defense_evasion_reg_disable_enableglobalqueryblocklist.toml
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[metadata] | ||
creation_date = "2024/05/31" | ||
integration = ["endpoint", "windows"] | ||
maturity = "production" | ||
updated_date = "2024/05/31" | ||
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[rule] | ||
author = ["Elastic"] | ||
description = """ | ||
Identifies changes to the DNS Global Query Block List (GQBL), a security feature that prevents the resolution of certain | ||
DNS names often exploited in attacks like WPAD spoofing. Attackers with certain privileges, such as DNSAdmins, can | ||
modify or disable the GQBL, allowing exploitation of hosts running WPAD with default settings for privilege escalation | ||
and lateral movement. | ||
""" | ||
from = "now-9m" | ||
index = ["logs-endpoint.events.registry-*", "logs-windows.sysmon_operational-*"] | ||
language = "eql" | ||
license = "Elastic License v2" | ||
name = "DNS Global Query Block List Modified or Disabled" | ||
references = [ | ||
"https://cube0x0.github.io/Pocing-Beyond-DA/", | ||
"https://www.thehacker.recipes/ad/movement/mitm-and-coerced-authentications/wpad-spoofing", | ||
"https://www.netspi.com/blog/technical-blog/network-penetration-testing/adidns-revisited/" | ||
] | ||
risk_score = 47 | ||
rule_id = "57bfa0a9-37c0-44d6-b724-54bf16787492" | ||
severity = "medium" | ||
tags = [ | ||
"Domain: Endpoint", | ||
"OS: Windows", | ||
"Use Case: Threat Detection", | ||
"Tactic: Defense Evasion", | ||
"Data Source: Elastic Defend", | ||
"Data Source: Sysmon" | ||
] | ||
timestamp_override = "event.ingested" | ||
type = "eql" | ||
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query = ''' | ||
registry where host.os.type == "windows" and event.type : "change" and | ||
( | ||
(registry.value : "EnableGlobalQueryBlockList" and registry.data.strings : ("0", "0x00000000")) or | ||
(registry.value : "GlobalQueryBlockList" and not registry.data.strings : "wpad") | ||
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) | ||
''' | ||
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[[rule.threat]] | ||
framework = "MITRE ATT&CK" | ||
[[rule.threat.technique]] | ||
id = "T1562" | ||
name = "Impair Defenses" | ||
reference = "https://attack.mitre.org/techniques/T1562/" | ||
[[rule.threat.technique.subtechnique]] | ||
id = "T1562.001" | ||
name = "Disable or Modify Tools" | ||
reference = "https://attack.mitre.org/techniques/T1562/001/" | ||
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[rule.threat.tactic] | ||
id = "TA0005" | ||
name = "Defense Evasion" | ||
reference = "https://attack.mitre.org/tactics/TA0005/" | ||
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[[rule.threat]] | ||
framework = "MITRE ATT&CK" | ||
[[rule.threat.technique]] | ||
id = "T1557" | ||
name = "Adversary-in-the-Middle" | ||
reference = "https://attack.mitre.org/techniques/T1557/" | ||
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[rule.threat.tactic] | ||
id = "TA0006" | ||
name = "Credential Access" | ||
reference = "https://attack.mitre.org/tactics/TA0006/" | ||
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