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merged 4 commits into from
Aug 28, 2025
Merged

[Rule Tuning] Windows 3rd Party EDR Compatibility - Part 15 #5030

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[Rule Tuning] Windows 3rd Party EDR Compatibility - Part 15
w0rk3r Aug 27, 2025
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w0rk3r Aug 28, 2025
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w0rk3r Aug 28, 2025
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Merge branch 'main' into 3rd_party_edr_15
w0rk3r Aug 28, 2025
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17 changes: 10 additions & 7 deletions rules/windows/persistence_werfault_reflectdebugger.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2023/08/29"
integration = ["endpoint", "m365_defender", "sentinel_one_cloud_funnel", "windows"]
integration = ["endpoint", "m365_defender", "sentinel_one_cloud_funnel", "windows", "crowdstrike"]
maturity = "production"
updated_date = "2025/03/20"
updated_date = "2025/08/26"

[rule]
author = ["Elastic"]
Expand All @@ -17,6 +17,7 @@ index = [
"logs-m365_defender.event-*",
"logs-sentinel_one_cloud_funnel.*",
"logs-windows.sysmon_operational-*",
"logs-crowdstrike.fdr*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -69,18 +70,20 @@ tags = [
"Data Source: Microsoft Defender for Endpoint",
"Data Source: SentinelOne",
"Data Source: Sysmon",
"Data Source: Crowdstrike",
"Resources: Investigation Guide",
]
timestamp_override = "event.ingested"
type = "eql"

query = '''
registry where host.os.type == "windows" and event.type == "change" and
registry.path : (
"HKLM\\Software\\Microsoft\\Windows\\Windows Error Reporting\\Hangs\\ReflectDebugger",
"\\REGISTRY\\MACHINE\\Software\\Microsoft\\Windows\\Windows Error Reporting\\Hangs\\ReflectDebugger",
"MACHINE\\Software\\Microsoft\\Windows\\Windows Error Reporting\\Hangs\\ReflectDebugger"
)
registry.value : "ReflectDebugger"

/*
Full registry key path omitted due to data source variations:
HKLM\\Software\\Microsoft\\Windows\\Windows Error Reporting\\Hangs\\ReflectDebugger
*/
'''


Expand Down
26 changes: 12 additions & 14 deletions rules/windows/privilege_escalation_disable_uac_registry.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2021/01/20"
integration = ["endpoint", "windows", "m365_defender", "sentinel_one_cloud_funnel"]
integration = ["endpoint", "windows", "m365_defender", "sentinel_one_cloud_funnel", "crowdstrike"]
maturity = "production"
updated_date = "2025/03/20"
updated_date = "2025/08/26"

[rule]
author = ["Elastic"]
Expand All @@ -20,6 +20,7 @@ index = [
"endgame-*",
"logs-m365_defender.event-*",
"logs-sentinel_one_cloud_funnel.*",
"logs-crowdstrike.fdr*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -91,25 +92,22 @@ tags = [
"Data Source: Sysmon",
"Data Source: Microsoft Defender for Endpoint",
"Data Source: SentinelOne",
"Data Source: Crowdstrike",
]
timestamp_override = "event.ingested"
type = "eql"

query = '''
registry where host.os.type == "windows" and event.type == "change" and
registry.path :
(
"HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\EnableLUA",
"HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\ConsentPromptBehaviorAdmin",
"HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\PromptOnSecureDesktop",
"\\REGISTRY\\MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\EnableLUA",
"\\REGISTRY\\MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\ConsentPromptBehaviorAdmin",
"\\REGISTRY\\MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\PromptOnSecureDesktop",
"MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\EnableLUA",
"MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\ConsentPromptBehaviorAdmin",
"MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\PromptOnSecureDesktop"
) and
registry.value : ("EnableLUA", "ConsentPromptBehaviorAdmin", "PromptOnSecureDesktop") and
registry.data.strings : ("0", "0x00000000")

/*
Full registry key path omitted due to data source variations:
HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\EnableLUA
HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\ConsentPromptBehaviorAdmin
HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\PromptOnSecureDesktop
*/
'''


Expand Down
12 changes: 8 additions & 4 deletions rules/windows/privilege_escalation_exploit_cve_202238028.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2024/04/23"
integration = ["endpoint", "windows", "m365_defender", "sentinel_one_cloud_funnel"]
integration = ["endpoint", "windows", "m365_defender", "sentinel_one_cloud_funnel", "crowdstrike"]
maturity = "production"
updated_date = "2025/03/20"
updated_date = "2025/08/26"

[rule]
author = ["Elastic"]
Expand All @@ -15,6 +15,7 @@ index = [
"winlogbeat-*",
"logs-m365_defender.event-*",
"logs-sentinel_one_cloud_funnel.*",
"logs-crowdstrike.fdr*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -71,6 +72,7 @@ tags = [
"Data Source: Sysmon",
"Data Source: Microsoft Defender for Endpoint",
"Data Source: SentinelOne",
"Data Source: Crowdstrike",
"Resources: Investigation Guide",
]
timestamp_override = "event.ingested"
Expand All @@ -80,8 +82,10 @@ query = '''
file where host.os.type == "windows" and event.type != "deletion" and
file.name : "MPDW-constraints.js" and
file.path : (
"?:\\*\\Windows\\system32\\DriVerStoRe\\FiLeRePoSiToRy\\*\\MPDW-constraints.js",
"?:\\*\\Windows\\WinSxS\\amd64_microsoft-windows-printing-printtopdf_*\\MPDW-constraints.js"
"?:\\*\\Windows\\system32\\DriverStore\\FileRepository\\*\\MPDW-constraints.js",
"?:\\*\\Windows\\WinSxS\\amd64_microsoft-windows-printing-printtopdf_*\\MPDW-constraints.js",
"\\Device\\HarddiskVolume*\\*\\Windows\\system32\\DriverStore\\FileRepository\\*\\MPDW-constraints.js",
"\\Device\\HarddiskVolume*\\*\\Windows\\WinSxS\\amd64_microsoft-windows-printing-printtopdf_*\\MPDW-constraints.js"
)
'''

Expand Down
20 changes: 16 additions & 4 deletions rules/windows/privilege_escalation_reg_service_imagepath_mod.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2024/06/05"
integration = ["endpoint", "windows"]
integration = ["endpoint", "windows", "crowdstrike", "sentinel_one_cloud_funnel", "m365_defender"]
maturity = "production"
updated_date = "2025/03/20"
updated_date = "2025/08/26"

[rule]
author = ["Elastic"]
Expand All @@ -12,7 +12,15 @@ privileges from groups like Server Operators may change the ImagePath of service
to execute commands.
"""
from = "now-9m"
index = ["logs-endpoint.events.registry-*", "logs-windows.sysmon_operational-*", "winlogbeat-*"]
index = [
"logs-endpoint.events.registry-*",
"logs-windows.sysmon_operational-*",
"winlogbeat-*",
"logs-crowdstrike.fdr*",
"logs-sentinel_one_cloud_funnel.*",
"logs-m365_defender.event-*",
"endgame-*",
]
language = "eql"
license = "Elastic License v2"
name = "Potential Privilege Escalation via Service ImagePath Modification"
Expand Down Expand Up @@ -63,14 +71,18 @@ tags = [
"Tactic: Privilege Escalation",
"Data Source: Elastic Defend",
"Data Source: Sysmon",
"Data Source: Crowdstrike",
"Resources: Investigation Guide",
"Data Source: SentinelOne",
"Data Source: Microsoft Defender for Endpoint",
"Data Source: Elastic Endgame",
]
timestamp_override = "event.ingested"
type = "eql"

query = '''
registry where host.os.type == "windows" and event.type == "change" and process.executable != null and
event.action == "modification" and registry.value == "ImagePath" and
registry.value == "ImagePath" and
registry.key : (
"*\\ADWS", "*\\AppHostSvc", "*\\AppReadiness", "*\\AudioEndpointBuilder", "*\\AxInstSV", "*\\camsvc", "*\\CertSvc",
"*\\COMSysApp", "*\\CscService", "*\\defragsvc", "*\\DeviceAssociationService", "*\\DeviceInstall", "*\\DevQueryBroker",
Expand Down
18 changes: 6 additions & 12 deletions rules/windows/privilege_escalation_rogue_windir_environment_var.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2020/11/26"
integration = ["endpoint", "windows", "m365_defender", "sentinel_one_cloud_funnel"]
integration = ["endpoint", "windows", "m365_defender", "sentinel_one_cloud_funnel", "crowdstrike"]
maturity = "production"
updated_date = "2025/03/20"
updated_date = "2025/08/26"

[rule]
author = ["Elastic"]
Expand All @@ -18,6 +18,7 @@ index = [
"winlogbeat-*",
"logs-m365_defender.event-*",
"logs-sentinel_one_cloud_funnel.*",
"logs-crowdstrike.fdr*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -72,6 +73,7 @@ tags = [
"Data Source: Sysmon",
"Data Source: Microsoft Defender for Endpoint",
"Data Source: SentinelOne",
"Data Source: Crowdstrike",
"Resources: Investigation Guide",
]
timestamp_override = "event.ingested"
Expand All @@ -81,16 +83,8 @@ query = '''
registry where host.os.type == "windows" and event.type == "change" and
registry.value : ("windir", "systemroot") and
registry.path : (
"HKEY_USERS\\*\\Environment\\windir",
"HKEY_USERS\\*\\Environment\\systemroot",
"HKU\\*\\Environment\\windir",
"HKU\\*\\Environment\\systemroot",
"HKCU\\*\\Environment\\windir",
"HKCU\\*\\Environment\\systemroot",
"\\REGISTRY\\USER\\*\\Environment\\windir",
"\\REGISTRY\\USER\\*\\Environment\\systemroot",
"USER\\*\\Environment\\windir",
"USER\\*\\Environment\\systemroot"
"*\\Environment\\windir",
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Room to add volatile environment variables?

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Tagging @Samirbous as I'm not sure, but from what I saw, I don't think it could be used for the same purpose. I'll merge it as is and we can revisit it if needed

"*\\Environment\\systemroot"
) and
not registry.data.strings : ("C:\\windows", "%SystemRoot%")
'''
Expand Down
6 changes: 4 additions & 2 deletions rules/windows/privilege_escalation_unquoted_service_path.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2023/07/13"
integration = ["endpoint", "m365_defender", "sentinel_one_cloud_funnel", "windows", "system"]
integration = ["endpoint", "m365_defender", "sentinel_one_cloud_funnel", "windows", "system", "crowdstrike"]
maturity = "production"
updated_date = "2025/03/20"
updated_date = "2025/08/26"

[rule]
author = ["Elastic"]
Expand All @@ -19,6 +19,7 @@ index = [
"logs-sentinel_one_cloud_funnel.*",
"logs-system.security*",
"logs-windows.sysmon_operational-*",
"logs-crowdstrike.fdr*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -72,6 +73,7 @@ tags = [
"Data Source: Elastic Endgame",
"Data Source: Sysmon",
"Data Source: Windows Security Event Logs",
"Data Source: Crowdstrike",
"Resources: Investigation Guide",
]
timestamp_override = "event.ingested"
Expand Down
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