e7c958da-fd5d-40d6-975e-582c6fee7f69

BS_RCIO64.sys :inline

Description

BS_RCIO64.sys is a vulnerable driver and more information will be added as found.

  • UUID: e7c958da-fd5d-40d6-975e-582c6fee7f69
  • Created: 2023-01-09
  • Author: Michael Haag
  • Acknowledgement: |

DownloadBlock

This download link contains the vulnerable driver!

Commands

sc.exe create BS_RCIO64.sys binPath=C:\windows\temp\BS_RCIO64.sys type=kernel && sc.exe start BS_RCIO64.sys
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 🔎

Expand

Block

on hashes

Alert

on hashes

Resources


  • https://github.com/jbaines-r7/dellicious
  • https://www.rapid7.com/blog/post/2021/12/13/driver-based-attacks-past-and-present/
  • https://github.com/elastic/protections-artifacts/blob/932baf346cc8a743f1963ad3d4565b42ed17bebe/yara/rules/Windows_VulnDriver_Biostar.yar#L54

    • Known Vulnerable Samples

    PropertyValue
    FilenameBS_RCIO64.sys
    Creation Timestamp2019-01-10 19:06:10
    MD5b10b210c5944965d0dc85e70a0b19a42
    SHA15db61d00a001fd493591dc919f69b14713889fc5
    SHA256d205286bffdf09bc033c09e95c519c1c267b40c2ee8bab703c6a2d86741ccd3e
    Authentihash MD5380a4fd97d795fec244add19a9c21fd6
    Authentihash SHA16832acd68bcf08f8ced63023b5f7da36824cc596
    Authentihash SHA2566991be9952aa08c0d2ac9fa728410ebdb44988b496ed01b8b7f478785ebb30c4
    RichPEHeaderHash MD5fa3d25060a1ec2f8199a8bba2d045991
    RichPEHeaderHash SHA1ad2b349c74d3ed46f9becdf406543a042bc9aa42
    RichPEHeaderHash SHA256248bdbea478bce55d40dfffeec5d164dd8018c12791b03ef33306faa402a261c
    CompanyBIOSTAR Group
    DescriptionI/O Interface driver file
    ProductBIOSTAR I/O driver
    OriginalFilenameBS_RCIO64.sys

    Download

    Certificates

    Expand
    Certificate 33000000253a2738690a3451c1000000000025
    FieldValue
    ToBeSigned (TBS) MD560cb2d8488f8724a67bf3254e6a57ff1
    ToBeSigned (TBS) SHA137aef77a1afaa33ac5787fc43a2c1e2509a19eb1
    ToBeSigned (TBS) SHA256495a6ff7ace92f915eb1753c4c0b32612056e6d320bb17ff90346db3aa357432
    SubjectC=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Hardware Compatibility Publisher
    ValidFrom2018-09-06 21:30:32
    ValidTo2019-09-06 21:30:32
    Signaturea5a2a99a97df110e18898e98fd07aaa52616e13f9c681d0f99cbafcb2914dd7a56a8324ab1fa926b26b9c5c87fd653c193cac3773f7750425d2090034461012f476d77005a079f2883e4cfa8b1dbab735f086c9692b3f6f53efb5db881bd94cdbda4c4c9597026a8fbf1eed41bf628879156fcacae96e751d4fe117f0f6dc985ef3bd72a7bd299bd507633600c9df2f92306fe4833a8d784019dbe8baaaa06fddae1d5066677c9bcce6506e6ebe455cc9f46b1e6e9d77f2a82159b2aac861eeb400de3dcef2bdfa85e0dc51628945f14b3f44340ba9f2a3af7ef1bf24f372b3a0d0fef4baafb86cf3ba43f29030b891d4b46b4ccb29b00506dc0ee0e44959f8369fc9e0fd4bc5fa12159a4cd6db8f9af57353c132654278784509635cf5e020c43757525a4d3dcbbd532986b46b2efaa2b6b3a00aa8d44cd0546efddb6ab2e30ccf75aba4bc8d9249262e408516b89cdd58c55b9af18baeb0201f7732724b4d3ca0c74ebc4afa19bb5583f948e9619232ece825e09465fdab93f6fe6ed0590d08435879ac1ba3cf41a8c4a8f5fea6a50e84a21a5ca38414e85de3867f4bce967cb45b62335b7416a0fdc08c1e3c049e85ef944f438e5f1296a659ff8e01a170001751f92b395bd7c9b4f33106a708a005c16c2b5439bac392253e1bcfbcb545d5f6243466205655a2e496098b9045d605b632b8f98d29f51e27e62fe63a4e8f2
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityFalse
    SerialNumber33000000253a2738690a3451c1000000000025
    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": [
    {
      "IsCertificateAuthority": false,
      "SerialNumber": "33000000253a2738690a3451c1000000000025",
      "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": "60cb2d8488f8724a67bf3254e6a57ff1",
        "SHA1": "37aef77a1afaa33ac5787fc43a2c1e2509a19eb1",
        "SHA256": "495a6ff7ace92f915eb1753c4c0b32612056e6d320bb17ff90346db3aa357432",
        "SHA384": "2a90dcf67abc92f070775de78ecf066e7730ea57b4c4d6c64cfdd66c3eb0f639ac188b24571a9f600ef017737a71decf"
      },
      "ValidFrom": "2018-09-06 21:30:32",
      "ValidTo": "2019-09-06 21:30:32",
      "Version": 3
    },
    {
      "IsCertificateAuthority": true,
      "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": "33000000253a2738690a3451c1000000000025",
      "Version": 1
    }
  ],
  "SignerInfo": ""
}

    source

    last_updated: 2024-09-26