SIP Provider Modification
editSIP Provider Modification
editIdentifies modifications to the registered Subject Interface Package (SIP) providers. SIP providers are used by the Windows cryptographic system to validate file signatures on the system. This may be an attempt to bypass signature validation checks or inject code into critical processes.
Rule type: eql
Rule indices:
- logs-endpoint.events.registry-*
- endgame-*
- logs-windows.sysmon_operational-*
- winlogbeat-*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Data Source: Elastic Endgame
- Data Source: Elastic Defend
- Data Source: Sysmon
Version: 109
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editregistry where host.os.type == "windows" and event.type == "change" and registry.value : ("Dll", "$Dll") and
registry.path: (
"*\\SOFTWARE\\Microsoft\\Cryptography\\OID\\EncodingType 0\\CryptSIPDllPutSignedDataMsg\\{*}\\Dll",
"*\\SOFTWARE\\WOW6432Node\\Microsoft\\Cryptography\\OID\\EncodingType 0\\CryptSIPDllPutSignedDataMsg\\{*}\\Dll",
"*\\SOFTWARE\\Microsoft\\Cryptography\\Providers\\Trust\\FinalPolicy\\{*}\\$Dll",
"*\\SOFTWARE\\WOW6432Node\\Microsoft\\Cryptography\\Providers\\Trust\\FinalPolicy\\{*}\\$Dll"
) and
registry.data.strings:"*.dll" and
not (process.name : "msiexec.exe" and registry.data.strings : "mso.dll") and
not (process.name : "regsvr32.exe" and registry.data.strings == "WINTRUST.DLL")
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Subvert Trust Controls
- ID: T1553
- Reference URL: https://attack.mitre.org/techniques/T1553/
-
Sub-technique:
- Name: SIP and Trust Provider Hijacking
- ID: T1553.003
- Reference URL: https://attack.mitre.org/techniques/T1553/003/