5901421f-7929-487d-87bd-632f29290352

VdBSv64.sys :inline

Description

The Carbon Black Threat Analysis Unit (TAU) discovered 34 unique vulnerable drivers (237 file hashes) accepting firmware access. Six allow kernel memory access. All give full control of the devices to non-admin users. By exploiting the vulnerable drivers, an attacker without the system privilege may erase/alter firmware, and/or elevate privileges. As of the time of writing in October 2023, the filenames of the vulnerable drivers have not been made public until now.

  • UUID: 5901421f-7929-487d-87bd-632f29290352
  • Created: 2023-11-02
  • Author: Takahiro Haruyama
  • Acknowledgement: |

Download

This download link contains the vulnerable driver!

Commands

sc.exe create VdBSv64sys binPath= C:\windows\temp\VdBSv64sys.sys type=kernel && sc.exe start VdBSv64sys
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://blogs.vmware.com/security/2023/10/hunting-vulnerable-kernel-drivers.html

  • Known Vulnerable Samples

    PropertyValue
    Filename
    Creation Timestamp2009-07-23 01:42:31
    MD54353b713487a2945b823423bbbf709bd
    SHA14ffa89f8dbdade28813e12db035cf9bd8665ef72
    SHA25691afa3de4b70ee26a4be68587d58b154c7b32b50b504ff0dc0babc4eb56578f4
    Authentihash MD516f4705fc75a0769f46b2d1745240aad
    Authentihash SHA152da22f92d5d022eaae66ef9e5ebca7ef27b674d
    Authentihash SHA256d2da77e10d2fd2b8b2aa68ab4af1483ef270311c846644e0ec61ace146ee6feb
    RichPEHeaderHash MD543a480628499054a660e90855d10145f
    RichPEHeaderHash SHA1e8a0d07090bd1290ef7ac69969f325f6cb74fa0a
    RichPEHeaderHash SHA25655900664a6be8d7981c6ce2236870f5576a0d01d18b0d40f0b1f50d6f2de6b30
    CompanyMiTAC Technology Corporation
    DescriptionMiTAC System Service Provider
    ProductMiTAC System Service Provider
    OriginalFilenameVdBSv64.sys

    Download

    Certificates

    Expand
    Certificate 3825d7faf861af9ef490e726b5d65ad5
    FieldValue
    ToBeSigned (TBS) MD5d6c7684e9aaa508cf268335f83afe040
    ToBeSigned (TBS) SHA118066d20ad92409c567cdfde745279ff71c75226
    ToBeSigned (TBS) SHA256a612fb22ce8be6dab75e47c98508f98496583e79c9c97b936a8caee9ea9f3fff
    SubjectC=US, O=VeriSign, Inc., CN=VeriSign Time Stamping Services Signer , G2
    ValidFrom2007-06-15 00:00:00
    ValidTo2012-06-14 23:59:59
    Signature50c54bc82480dfe40d24c2de1ab1a102a1a6822d0c831581370a820e2cb05a1761b5d805fe88dbf19191b3561a40a6eb92be3839b07536743a984fe437ba9989ca95421db0b9c7a08d57e0fad5640442354e01d133a217c84daa27c7f2e1864c02384d8378c6fc53e0ebe00687dda4969e5e0c98e2a5bebf8285c360e1dfad28d8c7a54b64dac71b5bbdac3908d53822a1338b2f8a9aebbc07213f44410907b5651c24bc48d34480eba1cfc902b414cf54c716a3805cf9793e5d727d88179e2c43a2ca53ce7d3df62a3ab84f9400a56d0a835df95e53f418b3570f70c3fbf5ad95a00e17dec4168060c90f2b6e8604f1ebf47827d105c5ee345b5eb94932f233
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityFalse
    SerialNumber3825d7faf861af9ef490e726b5d65ad5
    Version3
    Certificate 47bf1995df8d524643f7db6d480d31a4
    FieldValue
    ToBeSigned (TBS) MD5518d2ea8a21e879c942d504824ac211c
    ToBeSigned (TBS) SHA121ce87d827077e61abddf2beba69fde5432ea031
    ToBeSigned (TBS) SHA2561ec3b4f02e03930a470020e0e48d24b84678bb558f46182888d870541f5e25c7
    SubjectC=US, O=VeriSign, Inc., CN=VeriSign Time Stamping Services CA
    ValidFrom2003-12-04 00:00:00
    ValidTo2013-12-03 23:59:59
    Signature4a6bf9ea58c2441c318979992b96bf82ac01d61c4ccdb08a586edf0829a35ec8ca9313e704520def47272f0038b0e4c9934e9ad4226215f73f37214f703180f18b3887b3e8e89700fecf55964e24d2a9274e7aaeb76141f32acee7c9d95eddbb2b853eb59db5d9e157ffbeb4c57ef5cf0c9ef097fe2bd33b521b1b3827f73f4a
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityTrue
    SerialNumber47bf1995df8d524643f7db6d480d31a4
    Version3
    Certificate 4191a15a3978dfcf496566381d4c75c2
    FieldValue
    ToBeSigned (TBS) MD541011f8d0e7c7a6408334ca387914c61
    ToBeSigned (TBS) SHA1c7fc1727f5b75a6421a1f95c73bbdb23580c48e5
    ToBeSigned (TBS) SHA25688dd3952638ee82738c03168e6fd863fe4eab1059ee5e2926ad8cb587c255dc0
    SubjectC=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)04, CN=VeriSign Class 3 Code Signing 2004 CA
    ValidFrom2004-07-16 00:00:00
    ValidTo2014-07-15 23:59:59
    Signatureae3a17b84a7b55fa6455ec40a4ed494190999c89bcaf2e1dca7823f91c190f7feb68bc32d98838dedc3fd389b43fb18296f1a45abaed2e26d3de7c016e000a00a4069211480940f91c1879672324e0bbd5e150ae1bf50edde02e81cd80a36c524f9175558aba22f2d2ea4175882f63557d1e545a9559cad93481c05f5ef67ab5
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityTrue
    SerialNumber4191a15a3978dfcf496566381d4c75c2
    Version3
    Certificate 6088078ee11491f60ccddef11374431a
    FieldValue
    ToBeSigned (TBS) MD5b2b41fe37981c6cd7f41eb207443bf3b
    ToBeSigned (TBS) SHA12c72e3c0f306a754b1c2f235eb2e1e9b8a5a4a19
    ToBeSigned (TBS) SHA2562b6a21c61ca95ed2727b13f085a67f552a66f45b13d9db2943ed96a062dd3089
    SubjectC=TW, ST=Taiwan, L=Taipei, O=Mitac Technology Corporation, OU=Digital ID Class 3 , Microsoft Software Validation v2, CN=Mitac Technology Corporation
    ValidFrom2008-10-08 00:00:00
    ValidTo2009-10-23 23:59:59
    Signature9c744d221ef49ac5485f8833994046192117e43bba976d71dfb3c8c75596b460638f786855f09fa612ee759ca9dde70bf7bcc5d5fbd6b106b17a8220371d0ebfac391f197f97d4c1d3220612c1ecc219fcad6d1e91e58fc1233253b14dd792a0c382cdea0e1d863e27bed56d5a3b39530db0973a425e0c4febb349965a6312d12bf12d6c67bbc6a3020c9a0de56eb295df368e3ee6f27ccb48d98216a6648432b9731981838fdb72417a163f7883556926398afdd4b16226da80cd8ae58d16ba1d06449f59db81545741b3a8657dbfc1645b3aa4e15dd758b7556c57bd82580a22c1a63c48003d948da81cdda831c8ffe2da7779bf7c22bd596ada4a446b7191
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityFalse
    SerialNumber6088078ee11491f60ccddef11374431a
    Version3
    Certificate 610c120600000000001b
    FieldValue
    ToBeSigned (TBS) MD553c41bc1164e09e0cd1617a5bf913efd
    ToBeSigned (TBS) SHA193c03aac8951d494ecd5696b1c08658541b18727
    ToBeSigned (TBS) SHA25640bddadac24dc61ca4fb5cab2a2bc5d876bc36808311039a7a3e1a4066f7489b
    SubjectC=US, O=VeriSign, Inc., OU=Class 3 Public Primary Certification Authority
    ValidFrom2006-05-23 17:01:29
    ValidTo2016-05-23 17:11:29
    Signature01e446b33b457f7513877e5f43de468ecb8abdb64741bccccc7491d8ce395195a4a6b547c0efd2da7b8f5711f4328c7ccd3fee42da04214af7c843884a6f5cca14fc4bd19f4cbdd4556ecc02be0da6888f8609baa425bde8b0f0fa8b714e67b0cb82a8d78e55f737ebf03e88efe4e08afd1c6e2e61414875b4b02c1d28d8490fd715f02473253ccc880cde284c6554fe5eae8cea19ad2c51b29b3a47f53c80350117e24987d6544afb4bab07bcbf7d79cfbf35005cbb9ecffc82891b39a05197b6dec0b307ff449644c0342a195cabeef03bec294eb513c537857e75d5b4d60d066eb5d26c237167eaf1718eaf4e74aa0cf9ecbf4c58fa5e909b6d39cb86883f8b1ca81632d5fe6db9f1f8b3ead791f6364778c0272a15c768d6f4c5fc4f4ec8673f102d409ff11ec96148e7a703fc31730cf04688fe56da492995ef09daa3e5beef60ecd954a0599c28bd54ef66157f874c84dba60e95672e517b3439b641c28c846826dc240209e7818e0a972defeea7b998a60f818dc710b5e1ed982f486f53854964789bec5dac970b5526c3efba8dc8d1a52f5a7f936b611a339b18b8a26210de24ea76e12f43ebecdd7c12342489da2855aee5754e312b6763b6a8d7ab730a03cec5ea593fc7eb2a45aea8625b2f009939abb45f73c308ec80118f470e8f2a1343e191066255bbffba3da9a93d260faeca7d628b155589d694344dd665
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityTrue
    SerialNumber610c120600000000001b
    Version3

    Imports

    Expand
    • ntoskrnl.exe

    Imported Functions

    Expand
    • IofCompleteRequest
    • KeInitializeMutex
    • KeWaitForSingleObject
    • KeReleaseMutex
    • RtlInitUnicodeString
    • IoDeleteDevice
    • IoCreateSymbolicLink
    • KeSetEvent
    • KeClearEvent
    • IoCreateDevice
    • ExInterlockedInsertTailList
    • KeInitializeEvent
    • MmUnmapIoSpace
    • MmMapIoSpace
    • RtlTimeToTimeFields
    • ExAllocatePool
    • KeBugCheckEx
    • DbgPrint
    • RtlUnicodeToMultiByteN

    Exported Functions

    Expand

    Sections

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

    Signature

    Expand
    {
      "Certificates": [
        {
          "IsCertificateAuthority": false,
          "SerialNumber": "3825d7faf861af9ef490e726b5d65ad5",
          "Signature": "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",
          "SignatureAlgorithmOID": "1.2.840.113549.1.1.5",
          "Subject": "C=US, O=VeriSign, Inc., CN=VeriSign Time Stamping Services Signer , G2",
          "TBS": {
            "MD5": "d6c7684e9aaa508cf268335f83afe040",
            "SHA1": "18066d20ad92409c567cdfde745279ff71c75226",
            "SHA256": "a612fb22ce8be6dab75e47c98508f98496583e79c9c97b936a8caee9ea9f3fff",
            "SHA384": "35c249d6ad0261a6229b2a727067ac6ba32a5d24b30b9249051f748c7735fbe2ec2ef26a702c50df1790fbe32a65aee7"
          },
          "ValidFrom": "2007-06-15 00:00:00",
          "ValidTo": "2012-06-14 23:59:59",
          "Version": 3
        },
        {
          "IsCertificateAuthority": true,
          "SerialNumber": "47bf1995df8d524643f7db6d480d31a4",
          "Signature": "4a6bf9ea58c2441c318979992b96bf82ac01d61c4ccdb08a586edf0829a35ec8ca9313e704520def47272f0038b0e4c9934e9ad4226215f73f37214f703180f18b3887b3e8e89700fecf55964e24d2a9274e7aaeb76141f32acee7c9d95eddbb2b853eb59db5d9e157ffbeb4c57ef5cf0c9ef097fe2bd33b521b1b3827f73f4a",
          "SignatureAlgorithmOID": "1.2.840.113549.1.1.5",
          "Subject": "C=US, O=VeriSign, Inc., CN=VeriSign Time Stamping Services CA",
          "TBS": {
            "MD5": "518d2ea8a21e879c942d504824ac211c",
            "SHA1": "21ce87d827077e61abddf2beba69fde5432ea031",
            "SHA256": "1ec3b4f02e03930a470020e0e48d24b84678bb558f46182888d870541f5e25c7",
            "SHA384": "53e346bbde23779a5d116cc9d86fdd71c97b1f1b343439f8a11aa1d3c87af63864bb8488a5aeb2d0c26a6a1e0b15f03f"
          },
          "ValidFrom": "2003-12-04 00:00:00",
          "ValidTo": "2013-12-03 23:59:59",
          "Version": 3
        },
        {
          "IsCertificateAuthority": true,
          "SerialNumber": "4191a15a3978dfcf496566381d4c75c2",
          "Signature": "ae3a17b84a7b55fa6455ec40a4ed494190999c89bcaf2e1dca7823f91c190f7feb68bc32d98838dedc3fd389b43fb18296f1a45abaed2e26d3de7c016e000a00a4069211480940f91c1879672324e0bbd5e150ae1bf50edde02e81cd80a36c524f9175558aba22f2d2ea4175882f63557d1e545a9559cad93481c05f5ef67ab5",
          "SignatureAlgorithmOID": "1.2.840.113549.1.1.5",
          "Subject": "C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)04, CN=VeriSign Class 3 Code Signing 2004 CA",
          "TBS": {
            "MD5": "41011f8d0e7c7a6408334ca387914c61",
            "SHA1": "c7fc1727f5b75a6421a1f95c73bbdb23580c48e5",
            "SHA256": "88dd3952638ee82738c03168e6fd863fe4eab1059ee5e2926ad8cb587c255dc0",
            "SHA384": "a00aa5ed457c41e37967882644d63366bae014f03a986576d8514164d7027acf7d0b5e03d764db2558f60db148954459"
          },
          "ValidFrom": "2004-07-16 00:00:00",
          "ValidTo": "2014-07-15 23:59:59",
          "Version": 3
        },
        {
          "IsCertificateAuthority": false,
          "SerialNumber": "6088078ee11491f60ccddef11374431a",
          "Signature": "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",
          "SignatureAlgorithmOID": "1.2.840.113549.1.1.5",
          "Subject": "C=TW, ST=Taiwan, L=Taipei, O=Mitac Technology Corporation, OU=Digital ID Class 3 , Microsoft Software Validation v2, CN=Mitac Technology Corporation",
          "TBS": {
            "MD5": "b2b41fe37981c6cd7f41eb207443bf3b",
            "SHA1": "2c72e3c0f306a754b1c2f235eb2e1e9b8a5a4a19",
            "SHA256": "2b6a21c61ca95ed2727b13f085a67f552a66f45b13d9db2943ed96a062dd3089",
            "SHA384": "ef4cebd45206c18ea14e7ff1bffe3cfe4b26714128f4d064036a793aa65728fccf6b82b4d6e123152f4dd22688a80bf4"
          },
          "ValidFrom": "2008-10-08 00:00:00",
          "ValidTo": "2009-10-23 23:59:59",
          "Version": 3
        },
        {
          "IsCertificateAuthority": true,
          "SerialNumber": "610c120600000000001b",
          "Signature": "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",
          "SignatureAlgorithmOID": "1.2.840.113549.1.1.5",
          "Subject": "C=US, O=VeriSign, Inc., OU=Class 3 Public Primary Certification Authority",
          "TBS": {
            "MD5": "53c41bc1164e09e0cd1617a5bf913efd",
            "SHA1": "93c03aac8951d494ecd5696b1c08658541b18727",
            "SHA256": "40bddadac24dc61ca4fb5cab2a2bc5d876bc36808311039a7a3e1a4066f7489b",
            "SHA384": "f51d4e75ba638f7314cd59b8d6d45f3b34d35ce6986e9d205cd6f333e8e8d8e9c91f636e6bc84731b6661673f40963d8"
          },
          "ValidFrom": "2006-05-23 17:01:29",
          "ValidTo": "2016-05-23 17:11:29",
          "Version": 3
        }
      ],
      "CertificatesInfo": "",
      "Signer": [
        {
          "Issuer": "C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)04, CN=VeriSign Class 3 Code Signing 2004 CA",
          "SerialNumber": "6088078ee11491f60ccddef11374431a",
          "Version": 1
        }
      ],
      "SignerInfo": ""
    }
    

    source

    last_updated: 2023-12-22