Suspicious Persistence Through New SIP Provider (via registry_set)

title: Suspicious Persistence Through New SIP Provider (via registry_set)
id: 69d85308-be89-51ad-85ac-b0dd965a1847
status: stable
description: This rule detects when an adversary register a new SIP provider for persistence and defense evasion
references:
    - https://attack.mitre.org/techniques/T1553/003/
    - https://persistence-info.github.io/Data/codesigning.html
    - https://github.com/gtworek/PSBits/tree/master/SIP
    - https://specterops.io/assets/resources/SpecterOps_Subverting_Trust_in_Windows.pdf
author: Huntrule Team
date: 2026-07-09
tags:
    - attack.persistence
    - attack.defense-impairment
    - attack.t1553.003
logsource:
    category: registry_set
    product: windows
detection:
    selection_root:
        TargetObject|contains:
            - '\SOFTWARE\Microsoft\Cryptography\Providers\'
            - '\SOFTWARE\Microsoft\Cryptography\OID\EncodingType'
            - '\SOFTWARE\WOW6432Node\Microsoft\Cryptography\Providers\'
            - '\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType'
    selection_dll:
        TargetObject|contains:
            - '\Dll'
            - '\$DLL'
    filter:
        Details:
            - WINTRUST.DLL
            - mso.dll
    filter_poqexec:
        Image: 'C:\Windows\System32\poqexec.exe'
        TargetObject|contains: '\CryptSIPDll'
        Details: 'C:\Windows\System32\PsfSip.dll'
    condition: all of selection_* and not 1 of filter*
falsepositives:
    - Unknown
level: medium