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Remove missing fields in Windows Event Log Cleared detection #4001

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Merged
patel-bhavin merged 5 commits into from
Apr 16, 2026
+15 −18
Merged

Remove missing fields in Windows Event Log Cleared detection #4001

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d68fbc6
fix: remove missing fields in Windows Event Log Cleared detection
Apr 8, 2026
cc48352
fix: source should be XmlWinEventLog:System
Apr 8, 2026
7be7af4
update ds and output fields
nasbench Apr 15, 2026
7be277e
Update windows_event_log_security_1102.yml
nasbench Apr 15, 2026
b78adad
Merge branch 'develop' into fix-Windows-Event-Log-Cleared
patel-bhavin Apr 16, 2026
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10 changes: 2 additions & 8 deletions data_sources/windows_event_log_security_1102.yml
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
name: Windows Event Log Security 1102
id: 8db7b91a-6d7a-40e7-bfac-06f8e901a9cb
version: 3
date: '2025-07-10'
version: 4
date: '2026-04-15'
author: Patrick Bareiss, Splunk
description: Logs an event when the audit log is cleared.
mitre_components:
Expand Down Expand Up @@ -85,18 +85,12 @@ fields:
- vendor_product
output_fields:
- action
- app
- change_type
- dest
- dvc
- name
- object_attrs
- object_category
- signature
- signature_id
- src_user
- status
- subject
- user
- vendor_product
example_log: <Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'><System><Provider
Expand Down
6 changes: 3 additions & 3 deletions data_sources/windows_event_log_system_104.yml
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Original file line number Diff line number Diff line change
@@ -1,10 +1,10 @@
name: Windows Event Log System 104
id: 577b9b41-6b37-44c4-9016-3d890b909050
version: 2
date: '2025-07-10'
version: 3
date: '2026-04-08'
author: Bhavin Patel, Splunk
description: Data source object for Windows Event Log System 104
source: XmlWinEventLog:Security
source: XmlWinEventLog:System
sourcetype: XmlWinEventLog
separator: EventCode
supported_TA:
Expand Down
17 changes: 10 additions & 7 deletions detections/endpoint/windows_event_log_cleared.yml
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
name: Windows Event Log Cleared
id: ad517544-aff9-4c96-bd99-d6eb43bfbb6a
version: 17
date: '2026-03-10'
version: 18
date: '2026-04-08'
author: Rico Valdez, Michael Haag, Splunk
status: production
type: TTP
Expand All @@ -14,9 +14,7 @@ search: |-
OR
(`wineventlog_system` EventCode=104)
| stats count min(_time) as firstTime max(_time) as lastTime
by action app change_type dest dvc name object_attrs object_category
signature signature_id src_user status subject user
vendor_product object EventCode
by action change_type dest dvc object_category signature_id status user vendor_product object EventCode
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `windows_event_log_cleared_filter`
Expand Down Expand Up @@ -60,8 +58,13 @@ tags:
- Splunk Cloud
security_domain: endpoint
tests:
- name: True Positive Test
- name: True Positive Test - Security
attack_data:
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1070.001/windows_event_log_cleared/windows-xml.log
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1070.001/windows_event_log_cleared/windows-security.log
source: XmlWinEventLog:Security
sourcetype: XmlWinEventLog
- name: True Positive Test - System
attack_data:
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1070.001/windows_event_log_cleared/windows-system.log
source: XmlWinEventLog:System
sourcetype: XmlWinEventLog
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