97ed6c7b-be4c-4f60-9157-c788a555ca9f

iscflashx64.sys :inline

Description

CVE-2021-33834

  • UUID: 97ed6c7b-be4c-4f60-9157-c788a555ca9f
  • Created: 2023-10-12
  • Author: Takahiro Haruyama
  • Acknowledgement: |

Download

This download link contains the vulnerable driver!

Commands

sc.exe create iscflashx64.sys binPath=C:\windows\temp\iscflashx64.sys type=kernel && sc.exe start iscflashx64.sys
Use CasePrivilegesOperating System
firmware erasing/modificationkernelWindows 11

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



  • Known Vulnerable Samples

    PropertyValue
    Filename
    Creation Timestamp2015-01-04 23:43:38
    MD51f8a9619ab644728ce4cf86f3ad879ea
    SHA146be4e6cd8117ac13531bff30edcf564f39bcc52
    SHA256ce0a4430d090ba2f1b46abeaae0cb5fd176ac39a236888fa363bf6f9fd6036d9
    Authentihash MD589fd5d30f33a1c6c052f9561fae3c6c8
    Authentihash SHA1cc6e7cf720925c3c3206b5089eac0521fac338d0
    Authentihash SHA25668105d0f74ab436d36a741095d9ac08b8316e926727d59f3fe874395b291615c
    RichPEHeaderHash MD53a58b995b412f2da523684e6020016e2
    RichPEHeaderHash SHA10a47041d91ef860f1ae51288847e2d5dfba241a6
    RichPEHeaderHash SHA256820ffc66f9ac7817ebf2df3102df2a1d202e3e54ff38dedd766fd1b5b8717be6
    CompanyInsyde Software
    Descriptioniscflashx64.sys
    ProductInsyde Flash Utility 64 bit Driver
    OriginalFilenameiscflashx64.sys

    Download

    Certificates

    Expand
    Certificate 7e93ebfb7cc64e59ea4b9a77d406fc3b
    FieldValue
    ToBeSigned (TBS) MD5d0785ad36e427c92b19f6826ab1e8020
    ToBeSigned (TBS) SHA1365b7a9c21bd9373e49052c3e7b3e4646ddd4d43
    ToBeSigned (TBS) SHA256c2abb7484da91a658548de089d52436175fdb760a1387d225611dc0613a1e2ff
    SubjectC=US, O=Symantec Corporation, CN=Symantec Time Stamping Services CA , G2
    ValidFrom2012-12-21 00:00:00
    ValidTo2020-12-30 23:59:59
    Signature03099b8f79ef7f5930aaef68b5fae3091dbb4f82065d375fa6529f168dea1c9209446ef56deb587c30e8f9698d23730b126f47a9ae3911f82ab19bb01ac38eeb599600adce0c4db2d031a6085c2a7afce27a1d574ca86518e979406225966ec7c7376a8321088e41eaddd9573f1d7749872a16065ea6386a2212a35119837eb6
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityTrue
    SerialNumber7e93ebfb7cc64e59ea4b9a77d406fc3b
    Version3
    Certificate 0ecff438c8febf356e04d86a981b1a50
    FieldValue
    ToBeSigned (TBS) MD5e9d38360b914c8863f6cba3ee58764d3
    ToBeSigned (TBS) SHA14cba8eae47b6bf76f20b3504b98b8f062694a89b
    ToBeSigned (TBS) SHA25688901d86a4cc1f1bb193d08e1fb63d27452e63f83e228c657ab1a92e4ade3976
    SubjectC=US, O=Symantec Corporation, CN=Symantec Time Stamping Services Signer , G4
    ValidFrom2012-10-18 00:00:00
    ValidTo2020-12-29 23:59:59
    Signature783bb4912a004cf08f62303778a38427076f18b2de25dca0d49403aa864e259f9a40031cddcee379cb216806dab632b46dbff42c266333e449646d0de6c3670ef705a4356c7c8916c6e9b2dfb2e9dd20c6710fcd9574dcb65cdebd371f4378e678b5cd280420a3aaf14bc48829910e80d111fcdd5c766e4f5e0e4546416e0db0ea389ab13ada097110fc1c79b4807bac69f4fd9cb60c162bf17f5b093d9b5be216ca13816d002e380da8298f2ce1b2f45aa901af159c2c2f491bdb22bbc3fe789451c386b182885df03db451a179332b2e7bb9dc20091371eb6a195bcfe8a530572c89493fb9cf7fc9bf3e226863539abd6974acc51d3c7f92e0c3bc1cd80475
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityFalse
    SerialNumber0ecff438c8febf356e04d86a981b1a50
    Version3
    Certificate 0355af7ef9418e476d877eecd9f9e9e2
    FieldValue
    ToBeSigned (TBS) MD5768c1a47836a7536fbc50e7be60e65ff
    ToBeSigned (TBS) SHA1569a77bd8a095070b13b75bc81cd0422f746daa3
    ToBeSigned (TBS) SHA256d5289c20d1f89ac5000b691627764379d369c68ab7d53425baa8e83f09b5b369
    SubjectC=TW, ST=Taiwan, L=Taipei, O=Insyde Software Corp., OU=Digital ID Class 3 , Microsoft Software Validation v2, CN=Insyde Software Corp.
    ValidFrom2012-12-28 00:00:00
    ValidTo2016-01-27 23:59:59
    Signature19cf4cfe8a901a2d50614d496664fcdaaa80098ec50cec3e3f56a3d08a399d96d13046789c8281a1a9bf1054c79351f73e091664da593dcd39ec4ad7077513b01270666042cb743d4cd2387b61067384d5ed20ee0773e7e61fc1a8a750c3882c6e64ad0f8819b91c19c50708510467ee34ac845fb0a68259e90c7dbef65dcc4b75c72fde8d954ef37d53bba6f00a40e1c85deeb81531772b07232f8e8fe791eac42ab152b5e970c008f14bdec7a7e1ac114bae73ae1ba4f3a525a169f37de670a9447f65653426abb77c6a8b7f91c2d5428a63059129ba94818d3f6cceac0e0790ddb23d56f598e0a9083fc8b92a3b100c0dc1729290ba44fb1538ac4cedf926
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityFalse
    SerialNumber0355af7ef9418e476d877eecd9f9e9e2
    Version3
    Certificate 611993e400000000001c
    FieldValue
    ToBeSigned (TBS) MD578a717e082dcc1cda3458d917e677d14
    ToBeSigned (TBS) SHA14a872e0e51f9b304469cd1dedb496ee9b8b983a4
    ToBeSigned (TBS) SHA256317fa1d234ebc49040ebc5e8746f8997471496051b185a91bdd9dfbb23fab5f8
    SubjectC=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=(c) 2006 VeriSign, Inc. , For authorized use only, CN=VeriSign Class 3 Public Primary Certification Authority , G5
    ValidFrom2011-02-22 19:25:17
    ValidTo2021-02-22 19:35:17
    Signature812a82168c34672be503eb347b8ca2a3508af45586f11e8c8eae7dee0319ce72951848ad6211fd20fd3f4706015ae2e06f8c152c4e3c6a506c0b36a3cf7a0d9c42bc5cf819d560e369e6e22341678c6883762b8f93a32ab57fbe59fba9c9b2268fcaa2f3821b983e919527978661ee5b5d076bcd86a8e26580a8e215e2b2be23056aba0cf347934daca48c077939c061123a050d89a3ec9f578984fbecca7c47661491d8b60f195de6b84aacbc47c8714396e63220a5dc7786fd3ce38b71db7b9b03fcb71d3264eb1652a043a3fa2ead59924e7cc7f233424838513a7c38c71b242228401e1a461f17db18f7f027356cb863d9cdb9645d2ba55eefc629b4f2c7f821cc04ba57fd01b6abc667f9e7d3997ff4f522fa72f5fdff3a1c423aa1f98018a5ee8d1cd4669e4501feaaeefffb178f30f7f1cd29c59decb5d549003d85b8cbbb933a276a49c030ae66c9f723283276f9a48356c848ce5a96aaa0cc0cc47fb48e97af6de35427c39f86c0d6e473089705dbd054625e0348c2d59f7fa7668cd09db04fd4d3985f4b7ac97fb22952d01280c70f54b61e67cdc6a06c110384d34875e72afeb03b6e0a3aa66b769905a3f177686133144706fc537f52bd92145c4a246a678caf8d90aad0f679211b93267cc3ce1ebd883892ae45c6196a4950b305f8ae59378a6a250394b1598150e8ba8380b72335f476b9671d5918ad208d94
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityTrue
    SerialNumber611993e400000000001c
    Version3
    Certificate 5200e5aa2556fc1a86ed96c9d44b33c7
    FieldValue
    ToBeSigned (TBS) MD5b30c31a572b0409383ed3fbe17e56e81
    ToBeSigned (TBS) SHA14843a82ed3b1f2bfbee9671960e1940c942f688d
    ToBeSigned (TBS) SHA25603cda47a6e654ed85d932714fc09ce4874600eda29ec6628cfbaeb155cab78c9
    SubjectC=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)10, CN=VeriSign Class 3 Code Signing 2010 CA
    ValidFrom2010-02-08 00:00:00
    ValidTo2020-02-07 23:59:59
    Signature5622e634a4c461cb48b901ad56a8640fd98c91c4bbcc0ce5ad7aa0227fdf47384a2d6cd17f711a7cec70a9b1f04fe40f0c53fa155efe749849248581261c911447b04c638cbba134d4c645e80d85267303d0a98c646ddc7192e645056015595139fc58146bfed4a4ed796b080c4172e737220609be23e93f449a1ee9619dccb1905cfc3dd28dac423d6536d4b43d40288f9b10cf2326cc4b20cb901f5d8c4c34ca3cd8e537d66fa520bd34eb26d9ae0de7c59af7a1b42191336f86e858bb257c740e58fe751b633fce317c9b8f1b969ec55376845b9cad91faaced93ba5dc82153c2825363af120d5087111b3d5452968a2c9c3d921a089a052ec793a54891d3
    SignatureAlgorithmOID1.2.840.113549.1.1.5
    IsCertificateAuthorityTrue
    SerialNumber5200e5aa2556fc1a86ed96c9d44b33c7
    Version3

    Imports

    Expand
    • ntoskrnl.exe

    Imported Functions

    Expand
    • _vsnprintf
    • IofCompleteRequest
    • IoDeleteDevice
    • IoDeleteSymbolicLink
    • RtlInitUnicodeString
    • MmFreeContiguousMemorySpecifyCache
    • MmGetPhysicalAddress
    • MmAllocateContiguousMemorySpecifyCache
    • MmUnmapIoSpace
    • MmMapIoSpace
    • ExFreePoolWithTag
    • RtlCompareMemory
    • ExAllocatePoolWithTag
    • IoCreateSymbolicLink
    • IoCreateDevice
    • MmMapLockedPagesSpecifyCache
    • RtlQueryRegistryValues
    • ZwCreateFile
    • ZwClose
    • ZwWriteFile
    • RtlTimeToTimeFields
    • ExSystemTimeToLocalTime
    • KeBugCheckEx

    Exported Functions

    Expand

    Sections

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

    Signature

    Expand
    {
      "Certificates": [
        {
          "IsCertificateAuthority": true,
          "SerialNumber": "7e93ebfb7cc64e59ea4b9a77d406fc3b",
          "Signature": "03099b8f79ef7f5930aaef68b5fae3091dbb4f82065d375fa6529f168dea1c9209446ef56deb587c30e8f9698d23730b126f47a9ae3911f82ab19bb01ac38eeb599600adce0c4db2d031a6085c2a7afce27a1d574ca86518e979406225966ec7c7376a8321088e41eaddd9573f1d7749872a16065ea6386a2212a35119837eb6",
          "SignatureAlgorithmOID": "1.2.840.113549.1.1.5",
          "Subject": "C=US, O=Symantec Corporation, CN=Symantec Time Stamping Services CA , G2",
          "TBS": {
            "MD5": "d0785ad36e427c92b19f6826ab1e8020",
            "SHA1": "365b7a9c21bd9373e49052c3e7b3e4646ddd4d43",
            "SHA256": "c2abb7484da91a658548de089d52436175fdb760a1387d225611dc0613a1e2ff",
            "SHA384": "eab4fe5ef90e0de4a6aa3a27769a5e879f588df5e4785aa4104debd1f81e19ea56d33e3a16e5facf99f68b5d8e3d287b"
          },
          "ValidFrom": "2012-12-21 00:00:00",
          "ValidTo": "2020-12-30 23:59:59",
          "Version": 3
        },
        {
          "IsCertificateAuthority": false,
          "SerialNumber": "0ecff438c8febf356e04d86a981b1a50",
          "Signature": "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",
          "SignatureAlgorithmOID": "1.2.840.113549.1.1.5",
          "Subject": "C=US, O=Symantec Corporation, CN=Symantec Time Stamping Services Signer , G4",
          "TBS": {
            "MD5": "e9d38360b914c8863f6cba3ee58764d3",
            "SHA1": "4cba8eae47b6bf76f20b3504b98b8f062694a89b",
            "SHA256": "88901d86a4cc1f1bb193d08e1fb63d27452e63f83e228c657ab1a92e4ade3976",
            "SHA384": "e9f2a75334a9e336c5a4712eadee88d0374b0fdc273262f4e65c9040ad2793067cc076696db5279a478773485e285652"
          },
          "ValidFrom": "2012-10-18 00:00:00",
          "ValidTo": "2020-12-29 23:59:59",
          "Version": 3
        },
        {
          "IsCertificateAuthority": false,
          "SerialNumber": "0355af7ef9418e476d877eecd9f9e9e2",
          "Signature": "19cf4cfe8a901a2d50614d496664fcdaaa80098ec50cec3e3f56a3d08a399d96d13046789c8281a1a9bf1054c79351f73e091664da593dcd39ec4ad7077513b01270666042cb743d4cd2387b61067384d5ed20ee0773e7e61fc1a8a750c3882c6e64ad0f8819b91c19c50708510467ee34ac845fb0a68259e90c7dbef65dcc4b75c72fde8d954ef37d53bba6f00a40e1c85deeb81531772b07232f8e8fe791eac42ab152b5e970c008f14bdec7a7e1ac114bae73ae1ba4f3a525a169f37de670a9447f65653426abb77c6a8b7f91c2d5428a63059129ba94818d3f6cceac0e0790ddb23d56f598e0a9083fc8b92a3b100c0dc1729290ba44fb1538ac4cedf926",
          "SignatureAlgorithmOID": "1.2.840.113549.1.1.5",
          "Subject": "C=TW, ST=Taiwan, L=Taipei, O=Insyde Software Corp., OU=Digital ID Class 3 , Microsoft Software Validation v2, CN=Insyde Software Corp.",
          "TBS": {
            "MD5": "768c1a47836a7536fbc50e7be60e65ff",
            "SHA1": "569a77bd8a095070b13b75bc81cd0422f746daa3",
            "SHA256": "d5289c20d1f89ac5000b691627764379d369c68ab7d53425baa8e83f09b5b369",
            "SHA384": "92eb214d60e1c7342eb7b4863dd634d364d80494b4090301e872fba4d2efbec2a799d49f0ac9590f8c61e0fb3b905af3"
          },
          "ValidFrom": "2012-12-28 00:00:00",
          "ValidTo": "2016-01-27 23:59:59",
          "Version": 3
        },
        {
          "IsCertificateAuthority": true,
          "SerialNumber": "611993e400000000001c",
          "Signature": "812a82168c34672be503eb347b8ca2a3508af45586f11e8c8eae7dee0319ce72951848ad6211fd20fd3f4706015ae2e06f8c152c4e3c6a506c0b36a3cf7a0d9c42bc5cf819d560e369e6e22341678c6883762b8f93a32ab57fbe59fba9c9b2268fcaa2f3821b983e919527978661ee5b5d076bcd86a8e26580a8e215e2b2be23056aba0cf347934daca48c077939c061123a050d89a3ec9f578984fbecca7c47661491d8b60f195de6b84aacbc47c8714396e63220a5dc7786fd3ce38b71db7b9b03fcb71d3264eb1652a043a3fa2ead59924e7cc7f233424838513a7c38c71b242228401e1a461f17db18f7f027356cb863d9cdb9645d2ba55eefc629b4f2c7f821cc04ba57fd01b6abc667f9e7d3997ff4f522fa72f5fdff3a1c423aa1f98018a5ee8d1cd4669e4501feaaeefffb178f30f7f1cd29c59decb5d549003d85b8cbbb933a276a49c030ae66c9f723283276f9a48356c848ce5a96aaa0cc0cc47fb48e97af6de35427c39f86c0d6e473089705dbd054625e0348c2d59f7fa7668cd09db04fd4d3985f4b7ac97fb22952d01280c70f54b61e67cdc6a06c110384d34875e72afeb03b6e0a3aa66b769905a3f177686133144706fc537f52bd92145c4a246a678caf8d90aad0f679211b93267cc3ce1ebd883892ae45c6196a4950b305f8ae59378a6a250394b1598150e8ba8380b72335f476b9671d5918ad208d94",
          "SignatureAlgorithmOID": "1.2.840.113549.1.1.5",
          "Subject": "C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=(c) 2006 VeriSign, Inc. , For authorized use only, CN=VeriSign Class 3 Public Primary Certification Authority , G5",
          "TBS": {
            "MD5": "78a717e082dcc1cda3458d917e677d14",
            "SHA1": "4a872e0e51f9b304469cd1dedb496ee9b8b983a4",
            "SHA256": "317fa1d234ebc49040ebc5e8746f8997471496051b185a91bdd9dfbb23fab5f8",
            "SHA384": "b71052da4eb9157c8c1a5d7f55df19d69b9128598b72fcca608e5b7cc7d64c43c5504b9c86355a6dc22ee40c88cc385c"
          },
          "ValidFrom": "2011-02-22 19:25:17",
          "ValidTo": "2021-02-22 19:35:17",
          "Version": 3
        },
        {
          "IsCertificateAuthority": true,
          "SerialNumber": "5200e5aa2556fc1a86ed96c9d44b33c7",
          "Signature": "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",
          "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)10, CN=VeriSign Class 3 Code Signing 2010 CA",
          "TBS": {
            "MD5": "b30c31a572b0409383ed3fbe17e56e81",
            "SHA1": "4843a82ed3b1f2bfbee9671960e1940c942f688d",
            "SHA256": "03cda47a6e654ed85d932714fc09ce4874600eda29ec6628cfbaeb155cab78c9",
            "SHA384": "bbda8407c4f9fc4e54d772f1c7fb9d30bc97e1f97ecd51c443063d1fa0644e266328781776cd5c44896c457c75f4d7da"
          },
          "ValidFrom": "2010-02-08 00:00:00",
          "ValidTo": "2020-02-07 23:59:59",
          "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)10, CN=VeriSign Class 3 Code Signing 2010 CA",
          "SerialNumber": "0355af7ef9418e476d877eecd9f9e9e2",
          "Version": 1
        }
      ],
      "SignerInfo": ""
    }
    

    source

    last_updated: 2023-12-22