SIP Provider Modificationedit
Identifies 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.*
- endgame-*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
- Elastic Endgame
Version: 101 (version history)
Added (Elastic Stack release): 7.12.0
Last modified (Elastic Stack release): 8.6.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule queryedit
registry where event.type:"change" 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", "*\\SOF
TWARE\\WOW6432Node\\Microsoft\\Cryptography\\Providers\\Trust\\FinalPo
licy\\{*}\\$Dll" ) and registry.data.strings:"*.dll"
Threat mappingedit
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/
Rule version historyedit
- Version 101 (8.6.0 release)
-
-
Updated query, changed from:
registry where event.type:"change" and registry.path: ( "HKLM\\SOFTWARE\\Microsoft\\Cryptography\\OID\\EncodingType 0\\CryptSIPDllPutSignedDataMsg\\{*}\\Dll", "HKLM\\SOFTWARE\\WOW643 2Node\\Microsoft\\Cryptography\\OID\\EncodingType 0\\CryptSIPDllPutSignedDataMsg\\{*}\\Dll", "HKLM\\SOFTWARE\\Micros oft\\Cryptography\\Providers\\Trust\\FinalPolicy\\{*}\\$Dll", "HKL M\\SOFTWARE\\WOW6432Node\\Microsoft\\Cryptography\\Providers\\Trust\\F inalPolicy\\{*}\\$Dll" ) and registry.data.strings:"*.dll"
-
- Version 100 (8.5.0 release)
-
- Formatting only
- Version 3 (8.4.0 release)
-
- Formatting only
- Version 2 (8.1.0 release)
-
- Formatting only