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[Rule Tuning] Windows 3rd Party EDR Compatibility - Part 8 #5023

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Merged
merged 4 commits into from
Aug 28, 2025
Merged

[Rule Tuning] Windows 3rd Party EDR Compatibility - Part 8 #5023

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b1462c7
[Rule Tuning] Windows 3rd Party EDR Compatibility - Part 8
w0rk3r Aug 26, 2025
ed372eb
Apply suggestions from code review
w0rk3r Aug 28, 2025
ba5d92d
Update defense_evasion_wdac_policy_by_unusual_process.toml
w0rk3r Aug 28, 2025
ece85a4
Merge branch 'main' into 3rd_party_edr_8
w0rk3r Aug 28, 2025
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6 changes: 4 additions & 2 deletions rules/windows/defense_evasion_system_critical_proc_abnormal_file_activity.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2020/08/19"
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"

[transform]
[[transform.osquery]]
Expand Down Expand Up @@ -44,6 +44,7 @@ index = [
"endgame-*",
"logs-m365_defender.event-*",
"logs-sentinel_one_cloud_funnel.*",
"logs-crowdstrike.fdr*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -113,6 +114,7 @@ tags = [
"Data Source: Sysmon",
"Data Source: Microsoft Defender for Endpoint",
"Data Source: SentinelOne",
"Data Source: Crowdstrike",
]
timestamp_override = "event.ingested"
type = "eql"
Expand Down
6 changes: 4 additions & 2 deletions rules/windows/defense_evasion_unusual_process_network_connection.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2020/02/18"
integration = ["endpoint", "windows"]
integration = ["endpoint", "windows", "sentinel_one_cloud_funnel"]
maturity = "production"
updated_date = "2025/03/20"
updated_date = "2025/08/26"

[rule]
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this rule looks like a dup of https://github.com/elastic/detection-rules/blob/fbfc696a86d3ec826fbd13fb8957d294f155dc17/rules/windows/defense_evasion_network_connection_from_windows_binary.toml and we need to fix rules scope duplicate unless its justified by having multi-versions to support different datasources.

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It seems that both existed since the beginning of the repo, but yeah, there is definitely a lot of overlap. I'll take a look at this outside this PR and probably deprecate this one. +1 to my todo

author = ["Elastic"]
Expand All @@ -16,6 +16,7 @@ index = [
"logs-endpoint.events.process-*",
"logs-endpoint.events.network-*",
"logs-windows.sysmon_operational-*",
"logs-sentinel_one_cloud_funnel.*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -58,6 +59,7 @@ tags = [
"Resources: Investigation Guide",
"Data Source: Elastic Defend",
"Data Source: Sysmon",
"Data Source: SentinelOne",
]
type = "eql"

Expand Down
6 changes: 4 additions & 2 deletions rules/windows/defense_evasion_via_filter_manager.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2020/02/18"
integration = ["endpoint", "windows", "m365_defender", "system"]
integration = ["endpoint", "windows", "m365_defender", "system", "sentinel_one_cloud_funnel"]
maturity = "production"
updated_date = "2025/03/20"
updated_date = "2025/08/26"

[transform]
[[transform.osquery]]
Expand Down Expand Up @@ -45,6 +45,7 @@ index = [
"logs-windows.forwarded*",
"logs-windows.sysmon_operational-*",
"winlogbeat-*",
"logs-sentinel_one_cloud_funnel.*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -115,6 +116,7 @@ tags = [
"Data Source: Microsoft Defender for Endpoint",
"Data Source: Windows Security Event Logs",
"Data Source: Sysmon",
"Data Source: SentinelOne",
]
timestamp_override = "event.ingested"
type = "eql"
Expand Down
19 changes: 15 additions & 4 deletions rules/windows/defense_evasion_wdac_policy_by_unusual_process.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2025/02/28"
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 = [
"endgame-*",
"logs-m365_defender.event-*",
"logs-sentinel_one_cloud_funnel.*",
"logs-crowdstrike.fdr*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -67,14 +68,24 @@ tags = [
"Data Source: Sysmon",
"Data Source: Microsoft Defender for Endpoint",
"Data Source: SentinelOne",
"Data Source: Crowdstrike",
]
timestamp_override = "event.ingested"
type = "eql"

query = '''
file where host.os.type == "windows" and event.action != "deletion" and
file.path : ("?:\\Windows\\System32\\CodeIntegrity\\*.p7b", "?:\\Windows\\System32\\CodeIntegrity\\CiPolicies\\Active\\*.cip") and
not process.executable : "C:\\Windows\\System32\\poqexec.exe"
file.extension : ("p7b", "cip") and
file.path : (
"?:\\Windows\\System32\\CodeIntegrity\\*.p7b",
"?:\\Windows\\System32\\CodeIntegrity\\CiPolicies\\Active\\*.cip",
"\\Device\\HarddiskVolume*\\Windows\\System32\\CodeIntegrity\\*.p7b",
"\\Device\\HarddiskVolume*\\Windows\\System32\\CodeIntegrity\\CiPolicies\\Active\\*.cip"
) and
not process.executable : (
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Maybe ignore trusted install worker here?

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I'll review these rules for tunings as part of https://github.com/elastic/ia-trade-team/issues/619

"C:\\Windows\\System32\\poqexec.exe",
"\\Device\\HarddiskVolume*\\Windows\\System32\\poqexec.exe"
)
'''


Expand Down
6 changes: 4 additions & 2 deletions rules/windows/defense_evasion_wsl_filesystem.toml
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Original file line number Diff line number Diff line change
@@ -1,8 +1,8 @@
[metadata]
creation_date = "2023/01/12"
integration = ["endpoint", "windows"]
integration = ["endpoint", "windows", "sentinel_one_cloud_funnel"]
maturity = "production"
updated_date = "2025/03/20"
updated_date = "2025/08/26"

[rule]
author = ["Elastic"]
Expand All @@ -16,6 +16,7 @@ index = [
"logs-endpoint.events.process-*",
"logs-endpoint.events.file-*",
"logs-windows.sysmon_operational-*",
"logs-sentinel_one_cloud_funnel.*",
]
language = "eql"
license = "Elastic License v2"
Expand Down Expand Up @@ -67,6 +68,7 @@ tags = [
"Data Source: Elastic Defend",
"Data Source: Sysmon",
"Resources: Investigation Guide",
"Data Source: SentinelOne",
]
timestamp_override = "event.ingested"
type = "eql"
Expand Down
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