Detection rules › Splunk
Windows SIP Provider Inventory
The following analytic identifies all SIP (Subject Interface Package) providers on a Windows system using PowerShell scripted inputs. It detects SIP providers by capturing DLL paths from relevant events. This activity is significant because malicious SIP providers can be used to bypass trust controls, potentially allowing unauthorized code execution. If confirmed malicious, this activity could enable attackers to subvert system integrity, leading to unauthorized access or persistent threats within the environment. Analysts should review for new and non-standard paths to identify potential threats.
Known false positives
- False positives are limited as this is a hunting query for inventory.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Impairment |
Rule body
name: Windows SIP Provider Inventory
id: 21c5af91-1a4a-4511-8603-64fb41df3fad
version: 6
creation_date: '2023-10-10'
modification_date: '2026-05-13'
author: Michael Haag, Splunk
status: production
type: Hunting
description: The following analytic identifies all SIP (Subject Interface Package) providers on a Windows system using PowerShell scripted inputs. It detects SIP providers by capturing DLL paths from relevant events. This activity is significant because malicious SIP providers can be used to bypass trust controls, potentially allowing unauthorized code execution. If confirmed malicious, this activity could enable attackers to subvert system integrity, leading to unauthorized access or persistent threats within the environment. Analysts should review for new and non-standard paths to identify potential threats.
data_source: []
search: '`subjectinterfacepackage` Dll=*\\*.dll | stats count min(_time) as firstTime max(_time) as lastTime values(Dll) by Path host| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`| `windows_sip_provider_inventory_filter`'
how_to_implement: To implement this analytic, one must first perform inventory using a scripted inputs. Review the following Gist - https://gist.github.com/MHaggis/75dd5db546c143ea67703d0e86cdbbd1
known_false_positives: False positives are limited as this is a hunting query for inventory.
references:
- https://gist.github.com/MHaggis/75dd5db546c143ea67703d0e86cdbbd1
analytic_story:
- Subvert Trust Controls SIP and Trust Provider Hijacking
asset_type: Endpoint
mitre_attack_id:
- T1553.003
product:
- Splunk Enterprise
- Splunk Enterprise Security
- Splunk Cloud
category: endpoint
security_domain: endpoint
Stages and Predicates
Stage 1: search
`subjectinterfacepackage` Dll=*\\*.dll
Stage 2: stats
| stats count min(_time) as firstTime max(_time) as lastTime values(Dll) by Path host
Stage 3: search
| `security_content_ctime(firstTime)`
Stage 4: search
| `security_content_ctime(lastTime)`
Stage 5: search
| `windows_sip_provider_inventory_filter`
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Dll | eq |
| field:"Dll" kind:eq value:"*\\*.dll" |
sourcetype | eq |
| field:"sourcetype" kind:eq value:"PwSh:SubjectInterfacePackage" |