[Rule Tuning] Windows 3rd Party EDR Compatibility - Part 13

Author: w0rk3r

rules/windows/persistence_ms_office_addins_file.toml

@@ -1,8 +1,8 @@
 [metadata]
 creation_date = "2020/10/16"
-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"]
@@ -15,6 +15,7 @@ index = [
     "endgame-*",
     "logs-m365_defender.event-*",
     "logs-sentinel_one_cloud_funnel.*",
+    "logs-crowdstrike.fdr*",
 ]
 language = "eql"
 license = "Elastic License v2"
@@ -68,6 +69,7 @@ tags = [
     "Data Source: Sysmon",
     "Data Source: Microsoft Defender for Endpoint",
     "Data Source: SentinelOne",
+    "Data Source: Crowdstrike",
     "Resources: Investigation Guide",
 ]
 timestamp_override = "event.ingested"
@@ -76,12 +78,16 @@ type = "eql"
 query = '''
 file where host.os.type == "windows" and event.type != "deletion" and
  file.extension : ("wll","xll","ppa","ppam","xla","xlam") and
- file.path :
-    (
+ file.path : (
     "C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Word\\Startup\\*",
     "C:\\Users\\*\\AppData\\Roaming\\Microsoft\\AddIns\\*",
-    "C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Excel\\XLSTART\\*"
-    )
+    "C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Excel\\XLSTART\\*",
+
+    /* Crowdstrike specific condition as it uses NT Object paths */
+    "\\Device\\HarddiskVolume?\\Users\\*\\AppData\\Roaming\\Microsoft\\Word\\Startup\\*",
+    "\\Device\\HarddiskVolume?\\Users\\*\\AppData\\Roaming\\Microsoft\\AddIns\\*",
+    "\\Device\\HarddiskVolume?\\Users\\*\\AppData\\Roaming\\Microsoft\\Excel\\XLSTART\\*"
+ )
 '''
 
 

rules/windows/persistence_ms_outlook_vba_template.toml

@@ -1,8 +1,8 @@
 [metadata]
 creation_date = "2020/11/23"
-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"]
@@ -16,6 +16,7 @@ index = [
     "endgame-*",
     "logs-m365_defender.event-*",
     "logs-sentinel_one_cloud_funnel.*",
+    "logs-crowdstrike.fdr*",
 ]
 language = "eql"
 license = "Elastic License v2"
@@ -73,14 +74,16 @@ tags = [
     "Data Source: Sysmon",
     "Data Source: Microsoft Defender for Endpoint",
     "Data Source: SentinelOne",
+    "Data Source: Crowdstrike",
     "Resources: Investigation Guide",
 ]
 timestamp_override = "event.ingested"
 type = "eql"
 
 query = '''
 file where host.os.type == "windows" and event.type != "deletion" and
- file.path : "C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Outlook\\VbaProject.OTM"
+  file.name : "VbaProject.OTM" and
+  file.path : "*\\AppData\\Roaming\\Microsoft\\Outlook\\VbaProject.OTM"
 '''
 
 

rules/windows/persistence_msoffice_startup_registry.toml

@@ -1,8 +1,8 @@
 [metadata]
 creation_date = "2023/08/22"
-integration = ["endpoint", "m365_defender", "sentinel_one_cloud_funnel"]
+integration = ["endpoint", "m365_defender", "sentinel_one_cloud_funnel", "crowdstrike", "windows"]
 maturity = "production"
-updated_date = "2025/03/20"
+updated_date = "2025/08/26"
 
 [rule]
 author = ["Elastic"]
@@ -17,6 +17,8 @@ index = [
     "logs-m365_defender.event-*",
     "endgame-*",
     "logs-sentinel_one_cloud_funnel.*",
+    "logs-crowdstrike.fdr*",
+    "logs-windows.sysmon_operational-*",
 ]
 language = "eql"
 license = "Elastic License v2"
@@ -71,6 +73,8 @@ tags = [
     "Data Source: Elastic Endgame",
     "Data Source: Microsoft Defender for Endpoint",
     "Data Source: SentinelOne",
+    "Data Source: Crowdstrike",
+    "Data Source: Sysmon",
     "Resources: Investigation Guide",
 ]
 timestamp_override = "event.ingested"

rules/windows/persistence_netsh_helper_dll.toml

@@ -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"]
@@ -18,6 +18,7 @@ index = [
     "logs-m365_defender.event-*",
     "logs-sentinel_one_cloud_funnel.*",
     "logs-windows.sysmon_operational-*",
+    "logs-crowdstrike.fdr*",
 ]
 language = "eql"
 license = "Elastic License v2"
@@ -68,6 +69,7 @@ tags = [
     "Data Source: Microsoft Defender for Endpoint",
     "Data Source: SentinelOne",
     "Data Source: Sysmon",
+    "Data Source: Crowdstrike",
     "Resources: Investigation Guide",
 ]
 timestamp_override = "event.ingested"

rules/windows/persistence_powershell_profiles.toml

@@ -1,8 +1,8 @@
 [metadata]
 creation_date = "2022/10/13"
-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]]
@@ -45,6 +45,7 @@ index = [
     "endgame-*",
     "logs-m365_defender.event-*",
     "logs-sentinel_one_cloud_funnel.*",
+    "logs-crowdstrike.fdr*",
 ]
 language = "eql"
 license = "Elastic License v2"
@@ -120,17 +121,18 @@ tags = [
     "Data Source: Sysmon",
     "Data Source: Microsoft Defender for Endpoint",
     "Data Source: SentinelOne",
+    "Data Source: Crowdstrike",
     "Resources: Investigation Guide",
 ]
 timestamp_override = "event.ingested"
 type = "eql"
 
 query = '''
 file where host.os.type == "windows" and event.type != "deletion" and
-  file.path : ("?:\\Users\\*\\Documents\\WindowsPowerShell\\*",
-               "?:\\Users\\*\\Documents\\PowerShell\\*",
-               "?:\\Windows\\System32\\WindowsPowerShell\\*") and
-  file.name : ("profile.ps1", "Microsoft.Powershell_profile.ps1")
+  file.name : ("profile.ps1", "Microsoft.Powershell_profile.ps1") and
+  file.path : ("*\\Documents\\WindowsPowerShell\\*",
+               "*\\Documents\\PowerShell\\*",
+               "*\\Windows\\System32\\WindowsPowerShell\\*")
 '''