028aecb5-70d0-4423-87d7-f037a11ef1c9

signeddrv.sys :inline :inline

Description

signeddrv.sys is a Microsoft-signed vulnerable kernel driver that exposes an unrestricted \.\WinNotify device. Public research documents IOCTL 0x22200C for kernel base disclosure, IOCTL 0x222040 for arbitrary kernel read, and IOCTL 0x222044 for arbitrary kernel write, enabling local privilege escalation.

  • UUID: 028aecb5-70d0-4423-87d7-f037a11ef1c9
  • Created: 2026-04-17
  • Author: Michael Haag
  • Acknowledgement: | [@rainbowdynamix, @DbgPrint, @Haider303](https://twitter.com/@rainbowdynamix, @DbgPrint, @Haider303)

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Commands

sc.exe create signeddrv binPath=C:\windows\temp\signeddrv.sys type=kernel && sc.exe start signeddrv
Use CasePrivilegesOperating System
Elevate privilegeskernelWindows 10

Detections

YARA 🏹

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Exact Match

with header and size limitation

Threat Hunting

without header and size limitation

Renamed

for renamed driver files

Sigma 🛡️

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Names

detects loading using name only

Hashes

detects loading using hashes only

Sysmon 🔎

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Block

on hashes

Alert

on hashes

Resources


  • https://github.com/magicsword-io/LOLDrivers/issues/325
  • https://github.com/magicsword-io/LOLDrivers/issues/367
  • https://github.com/magicsword-io/LOLDrivers/issues/370
  • https://github.com/KeServiceDescriptorTable/vulnerable-drivers
  • https://github.com/Haider303/winnotify-exp
  • https://github.com/Haider303/sliff-driv-exploit
  • https://medium.com/@haider303mustafa/winnotify-signeddrv-sys-full-local-privilege-escalation-via-arbitrary-kernel-read-write-09e0c1ababf3
  • https://medium.com/@haider303mustafa/applockerflter-sliffdriver-sys-full-kernel-exploit-chain-from-driver-recon-to-system-shell-b57d87738308

    • Known Vulnerable Samples

    PropertyValue
    Filenamesigneddrv.sys
    Creation Timestamp2025-06-19 19:05:50
    MD5e052ac7d39d07f6657cf049aae0c5b60
    SHA19582337fdd6165dca71c6ae1c8c0222c6a10de77
    SHA2564dc3a03a046c210a7c6cd37db8d6bd34bf3760a612232cc82acf941a9e508e0f
    Authentihash MD526e19d4941322c86f3bdba7639bcf0d2
    Authentihash SHA1c007a5fb918f38ea0e5295077c264e0785bdd646
    Authentihash SHA25641856176aa3af446c206ec18261d6a12cdc98dea472df7f3244e34d383c2858a
    RichPEHeaderHash MD5c4e48624c268e5eaf809dd945257764c
    RichPEHeaderHash SHA1b644e2f9ae515241d2e80b7ce7bca8ed81991921
    RichPEHeaderHash SHA2568ece65dca648ca77acb19aac8c946f3a807a6363321623647fb9647983cc510e

    Download

    Certificates

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    Certificate 330000006e1229856f0ade6cfc00000000006e
    FieldValue
    ToBeSigned (TBS) MD53066a9830894e57ce6e47f7a6b58b84f
    ToBeSigned (TBS) SHA1ce441ecd2f11e400515a85d5a592da38f950f3dc
    ToBeSigned (TBS) SHA2563e30a731a3b620db0971ecd743ecd312bcdf14c82b9bdc9918102bacbf70520d
    SubjectC=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Hardware Compatibility Publisher
    ValidFrom2024-10-10 19:04:53
    ValidTo2025-10-08 19:04:53
    Signature3870e583035a72db64856d80e17833cd3badd24f19abf9a3d7c7485743dd875f69102820df4992d74f8fba0529be4e16f4234910064a3a1863299a29b82d3fac869915a368ec0e5d0127282221bce84db444d2e9974dc2761a2080a7bc7508d7064f32b2d97b0263d0d937527a8af95f18bcb54ec21a453ba35e55869791416a2a8813fcf95e889e65158dbb5b4cba653c989179947d286051ef6b0d56f41da479db08c6b93c44fa5c8399e126594cc53dfa756180607a1dd29559061d828b0ce2c5a462245ed0995a196ad96223b6eb1a787b4d10b5a7d4e3a130750103bc9c713fc8f32015273bb238b15aae25e4765d7ab81c5d3df82ef6a7d3c2e7a61dab024ff02df6876a86ec7198aa6e28c8e69a015129a717b1036113911f0aeefa8d05081974d026196f24bc1e4ef942599fafbd1b2c316bda73237f1822296888df2344c92b08c363976beb7020242b3069e6691f19e715e1d1a19ddc03235263c9bb7b8390145af57603105ced358f394547e3be96718835917234eb7fd7134d9fb605656717ed6b15f0583068c84c6c01abf31cc1df1fe7c4d2935590e6017cf8cc5635e1cd7054240fd0059f168e90ec1a49f24e0f050034d99e4aa6599a64d280d00ea8af57d3125caddb342a0b2c160a2f95d97e6045e69dc1c1b3fa56dfd40380ce60536a59750edf0069dc7c27f8ccc8f073b46d169b8fed1fd40ac6f00c
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityFalse
    SerialNumber330000006e1229856f0ade6cfc00000000006e
    Version3
    Certificate 330000000d690d5d7893d076df00000000000d
    FieldValue
    ToBeSigned (TBS) MD583f69422963f11c3c340b81712eef319
    ToBeSigned (TBS) SHA10c5e5f24590b53bc291e28583acb78e5adc95601
    ToBeSigned (TBS) SHA256d8be9e4d9074088ef818bc6f6fb64955e90378b2754155126feebbbd969cf0ae
    SubjectC=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Third Party Component CA 2014
    ValidFrom2014-10-15 20:31:27
    ValidTo2029-10-15 20:41:27
    Signature96b5c33b31f27b6ba11f59dd742c3764b1bca093f9f33347e9f95df21d89f4579ee33f10a3595018053b142941b6a70e5b81a2ccbd8442c1c4bed184c2c4bd0c8c47bcbd8886fb5a0896ae2c2fdfbf9366a32b20ca848a6945273f732332936a23e9fffdd918edceffbd6b41738d579cf8b46d499805e6a335a9f07e6e86c06ba8086725afc0998cdba7064d4093188ba959e69914b912178144ac57c3ae8eae947bcb3b8edd7ab4715bba2bc3c7d085234b371277a54a2f7f1ab763b94459ed9230cce47c099212111f52f51e0291a4d7d7e58f8047ff189b7fd19c0671dcf376197790d52a0fbc6c12c4c50c2066f50e2f5093d8cafb7fe556ed09d8a753b1c72a6978dcf05fe74b20b6af63b5e1b15c804e9c7aa91d4df72846782106954d32dd6042e4b61ac4f24636de357302c1b5e55fb92b59457a9243d7c4e963dd368f76c728caa8441be8321a66cde5485c4a0a602b469206609698dcd933d721777f886dac4772daa2466eab64682bd24e98fb35cc7fec3f136d11e5db77edc1c37e1f6a4a14f8b4a721c671866770cdd819a35d1fa09b9a7cc55d4d728e74077fa74d00fcdd682412772a557527cda92c1d8e7c19ee692c9f7425338208db38cc7cc74f6c3a6bc237117872fe55596460333e2edfc42de72cd7fb0a82256fb8d70c84a5e1c4746e2a95329ea0fecdb4188fd33bad32b2b19ab86d0543fbff0d0f
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityTrue
    SerialNumber330000000d690d5d7893d076df00000000000d
    Version3

    Imports

    Expand
    • ntoskrnl.exe

    Imported Functions

    Expand
    • RtlInitUnicodeString
    • KeLowerIrql
    • KfRaiseIrql
    • KeAcquireSpinLockAtDpcLevel
    • KeReleaseSpinLockFromDpcLevel
    • ExAllocatePool
    • ExFreePoolWithTag
    • IofCompleteRequest
    • IoCreateDevice
    • IoCreateSymbolicLink
    • IoDeleteDevice
    • IoDeleteSymbolicLink
    • IoReleaseRemoveLockEx
    • ObfDereferenceObject
    • PsLookupProcessByProcessId
    • PsGetProcessSectionBaseAddress
    • ZwQuerySystemInformation
    • ObReferenceObjectByName
    • IoCreateDriver
    • __C_specific_handler
    • IoDriverObjectType
    • ExAllocatePoolWithTag
    • ExAllocatePool2
    • MmUnmapIoSpace
    • MmMapIoSpaceEx
    • IoGetCurrentProcess
    • ZwClose
    • MmGetPhysicalMemoryRanges
    • MmCopyMemory
    • MmGetVirtualForPhysical
    • KeStackAttachProcess
    • KeUnstackDetachProcess
    • ObOpenObjectByPointer
    • ZwAllocateVirtualMemory
    • PsGetProcessPeb
    • ZwQueryInformationProcess
    • ZwProtectVirtualMemory
    • MmCopyVirtualMemory

    Exported Functions

    Expand

    Sections

    Expand
    • .text
    • .rdata
    • .data
    • .pdata
    • INIT
    • .reloc

    Signature

    Expand
    {
  "Certificates": [
    {
      "CertificateType": "Leaf (Code Signing)",
      "IsCA": false,
      "IsCertificateAuthority": false,
      "IsCodeSigning": true,
      "SerialNumber": "330000006e1229856f0ade6cfc00000000006e",
      "Signature": "3870e583035a72db64856d80e17833cd3badd24f19abf9a3d7c7485743dd875f69102820df4992d74f8fba0529be4e16f4234910064a3a1863299a29b82d3fac869915a368ec0e5d0127282221bce84db444d2e9974dc2761a2080a7bc7508d7064f32b2d97b0263d0d937527a8af95f18bcb54ec21a453ba35e55869791416a2a8813fcf95e889e65158dbb5b4cba653c989179947d286051ef6b0d56f41da479db08c6b93c44fa5c8399e126594cc53dfa756180607a1dd29559061d828b0ce2c5a462245ed0995a196ad96223b6eb1a787b4d10b5a7d4e3a130750103bc9c713fc8f32015273bb238b15aae25e4765d7ab81c5d3df82ef6a7d3c2e7a61dab024ff02df6876a86ec7198aa6e28c8e69a015129a717b1036113911f0aeefa8d05081974d026196f24bc1e4ef942599fafbd1b2c316bda73237f1822296888df2344c92b08c363976beb7020242b3069e6691f19e715e1d1a19ddc03235263c9bb7b8390145af57603105ced358f394547e3be96718835917234eb7fd7134d9fb605656717ed6b15f0583068c84c6c01abf31cc1df1fe7c4d2935590e6017cf8cc5635e1cd7054240fd0059f168e90ec1a49f24e0f050034d99e4aa6599a64d280d00ea8af57d3125caddb342a0b2c160a2f95d97e6045e69dc1c1b3fa56dfd40380ce60536a59750edf0069dc7c27f8ccc8f073b46d169b8fed1fd40ac6f00c",
      "SignatureAlgorithmOID": "1.2.840.113549.1.1.11",
      "Subject": "C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Hardware Compatibility Publisher",
      "TBS": {
        "MD5": "3066a9830894e57ce6e47f7a6b58b84f",
        "SHA1": "ce441ecd2f11e400515a85d5a592da38f950f3dc",
        "SHA256": "3e30a731a3b620db0971ecd743ecd312bcdf14c82b9bdc9918102bacbf70520d",
        "SHA384": "68c6537d64e3a4f02a2c1d04257c13ab1def23c9c54bafc434176be50a411a75c118c9f8edc81f97b8a1db2dc1d009e3"
      },
      "ValidFrom": "2024-10-10 19:04:53",
      "ValidTo": "2025-10-08 19:04:53",
      "Version": 3
    },
    {
      "CertificateType": "CA",
      "IsCA": true,
      "IsCertificateAuthority": true,
      "IsCodeSigning": false,
      "SerialNumber": "330000000d690d5d7893d076df00000000000d",
      "Signature": "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",
      "SignatureAlgorithmOID": "1.2.840.113549.1.1.11",
      "Subject": "C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Third Party Component CA 2014",
      "TBS": {
        "MD5": "83f69422963f11c3c340b81712eef319",
        "SHA1": "0c5e5f24590b53bc291e28583acb78e5adc95601",
        "SHA256": "d8be9e4d9074088ef818bc6f6fb64955e90378b2754155126feebbbd969cf0ae",
        "SHA384": "260ad59ba706420f68ba212931153bd89f760c464b21be55fba9d014fff322407859d4ebfb78ea9a3330f60dc9821a63"
      },
      "ValidFrom": "2014-10-15 20:31:27",
      "ValidTo": "2029-10-15 20:41:27",
      "Version": 3
    }
  ],
  "CertificatesInfo": "",
  "Signer": [
    {
      "Issuer": "C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Third Party Component CA 2014",
      "SerialNumber": "330000006e1229856f0ade6cfc00000000006e",
      "Version": 1
    }
  ],
  "SignerInfo": ""
}

    source

    last_updated: 2026-07-10