5281b4b4-1b96-4261-8a1f-5fa22ba44d53

BS_RVSIO64.sys :inline :inline

Description

BS_RVSIO64.sys is a vulnerable kernel driver from the KeServiceDescriptorTable/vulnerable-drivers repository. The driver exposes dangerous kernel primitives to usermode.

  • UUID: 5281b4b4-1b96-4261-8a1f-5fa22ba44d53
  • Created: 2026-04-17
  • Author: Michael Haag
  • Acknowledgement: | [@rainbowdynamix, @DbgPrint](https://twitter.com/@rainbowdynamix, @DbgPrint)

Download

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Commands

sc.exe create BS_RVSIO64 binPath=C:\windows\temp\BS_RVSIO64.sys type=kernel && sc.exe start BS_RVSIO64
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/KeServiceDescriptorTable/vulnerable-drivers

    • Known Vulnerable Samples

    PropertyValue
    FilenameBS_RVSIO64.sys
    Creation Timestamp2023-05-08 04:50:03
    MD5559e3b07626f694b64576c96599d6955
    SHA12f4124d3d81898585d2ca5c09d5333636f64217a
    SHA256a8aae612727320db096b337a45bf3cd31b5f9702ef6c4747dd2aaa74ff6badb7
    Authentihash MD55424dcfdef8f8cd603d2fd73669769a8
    Authentihash SHA172f7bb507240f5febfd1598cf0beb54473c53b7f
    Authentihash SHA25602f753c1688c4f398e1e1ed47384791fef6628bde58f740448f8e0751b321b85
    RichPEHeaderHash MD5fa3d25060a1ec2f8199a8bba2d045991
    RichPEHeaderHash SHA1ad2b349c74d3ed46f9becdf406543a042bc9aa42
    RichPEHeaderHash SHA256248bdbea478bce55d40dfffeec5d164dd8018c12791b03ef33306faa402a261c
    CompanyBIOSTAR Group
    DescriptionI/O Interface driver file
    ProductBIOSTAR I/O driver
    OriginalFilenameBS_RVSIO64.sys

    Download

    Certificates

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    Certificate 3300000058e7c589c068dca727000000000058
    FieldValue
    ToBeSigned (TBS) MD5d83c9268bb1f35e4ea0f81b7b876b4f8
    ToBeSigned (TBS) SHA16a784e02bf67f5791a85567716aa2d0fd701fcd0
    ToBeSigned (TBS) SHA25600dab92fcb3753ac06147a6d8888b5731877d84979e3f178f572e3a1dff33fa8
    SubjectC=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Hardware Compatibility Publisher
    ValidFrom2022-06-07 18:08:07
    ValidTo2023-06-01 18:08:07
    Signature4c967b89d7f96aa22dbaa9eee6cdc8dad16669620cd9c5c84bf3ca1ec4eaa4a67df9fafb84ba75fcec635f0a3d484541d890d65542406e5792504ecb8fd428068837b11d8e9d4cdb503608d0842dea48428247b46364746dc86b79cdc3379acb229e67b749ed31d3c6bcc88624bff3e066355d59b7ef9e715d3c3270506d1e794959edd8df2572505c15876ac0f42ed0d05f70214f50fb109627ab192b217d6a2bf503fe35811f6ffcf0585ae508c37589dc8015eea615f36ea2f1105c0f677a6758cb4898b57458cab4fc2e1c60f8af32baf51cb41b775e79815713693db878a935b1fb8232232310bba545e57c74d63a406968c36818974ea1e425839b83e81c94897f1b896d2974e32ff5a47f8bcefdebfde84a4d01c5918bf98aececb8edb2ef9dc697054676a10c04313f3a131469c978f2e7839f11a28e436936cc07e227fd705becbb54ba67c2eeaaa025658811de22f37e4ce51109c10ed94a65583cc4e4024432cedf41b3b18b175360b1f4e12a0cc9d562e7fabd80bacb78a74e9262a9a46c3d0a7757f71e4202522cb70d9591c77e1a4b0ca24739a9cef78f7d2fb376c4cf56a35b58deb7dba458bee058254bc3883ba356c79f458815e3bbcac600b063594db47ffdbb215783bf5c38c74a1fc6271a093aab79b4cf253c14b1eeb89f9c607d7956203166fa4420482b52ab4f3bd3f0e6bda4a13a018f0ecdb0a0
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityFalse
    SerialNumber3300000058e7c589c068dca727000000000058
    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
    • HAL.dll

    Imported Functions

    Expand
    • KeInitializeSemaphore
    • IoCreateSymbolicLink
    • IoCreateDevice
    • KeSetEvent
    • MmUnmapIoSpace
    • KeDelayExecutionThread
    • PsCreateSystemThread
    • IoStartNextPacket
    • PsTerminateSystemThread
    • ExEventObjectType
    • MmMapIoSpace
    • IoDeleteDevice
    • ObReferenceObjectByHandle
    • KeWaitForSingleObject
    • KeReleaseSemaphore
    • ObfDereferenceObject
    • IoReleaseCancelSpinLock
    • IoAcquireCancelSpinLock
    • IoStartPacket
    • IofCompleteRequest
    • KeRemoveEntryDeviceQueue
    • KeBugCheckEx
    • RtlInitUnicodeString
    • ZwClose
    • IoDeleteSymbolicLink
    • HalSetBusDataByOffset
    • HalGetBusDataByOffset

    Exported Functions

    Expand

    Sections

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

    Signature

    Expand
    {
  "Certificates": [
    {
      "CertificateType": "Leaf (Code Signing)",
      "IsCA": false,
      "IsCertificateAuthority": false,
      "IsCodeSigning": true,
      "SerialNumber": "3300000058e7c589c068dca727000000000058",
      "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 Hardware Compatibility Publisher",
      "TBS": {
        "MD5": "d83c9268bb1f35e4ea0f81b7b876b4f8",
        "SHA1": "6a784e02bf67f5791a85567716aa2d0fd701fcd0",
        "SHA256": "00dab92fcb3753ac06147a6d8888b5731877d84979e3f178f572e3a1dff33fa8",
        "SHA384": "75264b08d0862968698b184e6049337dbb3ddaab64c4cb71aaa8b990f10bc8b8660e2b1044da616784559b92f6b45280"
      },
      "ValidFrom": "2022-06-07 18:08:07",
      "ValidTo": "2023-06-01 18:08:07",
      "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": "3300000058e7c589c068dca727000000000058",
      "Version": 1
    }
  ],
  "SignerInfo": ""
}

    source

    last_updated: 2026-04-20