c0634ed7-840e-4a7e-8b34-33efe50405c2

TPwSav.sys :inline

Description

A driver associated with Toshiba laptops power saving functionality allows arbitary one byte reading and writing mapped physical addresses. Blackpoint Cyber's SOC observed this driver being used as part of a custom EDRSandblast malware to blind EDR prior to Qilin ransomware deployment.

  • UUID: c0634ed7-840e-4a7e-8b34-33efe50405c2
  • Created: 2025-01-31
  • Author: Robel Campbell
  • Acknowledgement: |

DownloadBlock

This download link contains the vulnerable driver!

Commands

sc.exe create TPwSav.sys binPath=C:\windows\temp\TPwSav.sys type=kernel && sc.exe start TPwSav.sys
Use CasePrivilegesOperating System
Elevate privileges, Blind EDRkernelWindows

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://blackpointcyber.com/resources/blog/qilin-ransomware-and-the-hidden-dangers-of-byovd/

    • Known Vulnerable Samples

    PropertyValue
    FilenameTPwSav.sys
    Creation Timestamp2015-08-13 03:12:18
    MD5b0caa4f3ac2841be683933a6af9bee0e
    SHA1c1130e09831c7a2e0cc8ba7335e702910b25f526
    SHA256011df46e94218cbb2f0b8da13ab3cec397246fdc63436e58b1bf597550a647f6
    Authentihash MD5e3745d926e84b626dfd36eea8b4211bc
    Authentihash SHA18057487b702996c56d4cbb96a0c63a6ed82271b5
    Authentihash SHA2568e9f3f58005d62b241874e9790d457d0fbffc101062166f70a5c27aceefdde36
    RichPEHeaderHash MD54a8f45890f0d97d15979d871749f6397
    RichPEHeaderHash SHA1e820ad2624f292c189d5362792ef1fcb1040360c
    RichPEHeaderHash SHA256196eafc06e01b8efcb108fd7e308656261a712bef98091a8b22f2abe071fbfda
    CompanyCompal Electronic, Inc.
    DescriptionIO Driver

    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 4c655dbb2b80013dab25929458a43f5f
    FieldValue
    ToBeSigned (TBS) MD53a312763f609a88cc1cb274558e6592c
    ToBeSigned (TBS) SHA1c670abc62035c7769ac901b4a8b7eb7643c8155a
    ToBeSigned (TBS) SHA2566d0eb02c8d4ab2514afc97de0ce6ac2ec00df72ae1cfc0c08ef0aea3ad7235d0
    SubjectC=TW, ST=Taiwan, L=Taipei, O=Compal electronic ,inc, CN=Compal electronic ,inc
    ValidFrom2015-05-13 00:00:00
    ValidTo2018-06-11 23:59:59
    Signature136a9289bb7f48aa912fb25ff0a3c9f45dfa84c6b47a89864a328da43f7f1d95e9e7e720ff3d6e46ad2a460133052039b9ee2864a80795982e2169af48f1eba93a611726184e94ba90d72764141b9b626b312c3c82d9636a4e7a94cf05b89d53f6901248ab902067549ac09866792359eb29ceaad9accf2f9e93f7bd34ff900fc97c9b4324277f799b6893781ccb06f365f124f796474d98c70bda4292c273ccc1ad352bc4df11d5af9e44ff3313a8a22259c05d1f61f333f8345fdf0e72e88041ccd50f27104e713eddb17d5d0ec06e9366affb8fadbbb8b99a929a843a8fb114192dc94f9445fb1f3c202ee60ddd785a7e051c8f11b0afeb065f91bd071352
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityFalse
    SerialNumber4c655dbb2b80013dab25929458a43f5f
    Version3
    Certificate 3d78d7f9764960b2617df4f01eca862a
    FieldValue
    ToBeSigned (TBS) MD51f056ff7d5f874984dc605402b7cb042
    ToBeSigned (TBS) SHA1bdb348353a2203deb4b767914fa1bd7248dd728b
    ToBeSigned (TBS) SHA256a08e79c386083d875014c409c13d144e0a24386132980df11ff59737c8489eb1
    SubjectC=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 SHA256 Code Signing CA
    ValidFrom2013-12-10 00:00:00
    ValidTo2023-12-09 23:59:59
    Signature13851a1e69a937f7a0bda4af7e1d6153fe9d8c5e0ca6751e781723ddfdec1a035539fb7195c7655aa78e30d2445a61db706fda2105c22e73ba49f1d193fe5dc9cd5e03e0899e3f741ed7f7388ba9d6cfbb352f3358a89256d1c84d3b82e6798416fc28b0b147f31da23eee87d9a67fa456a53fad842e29de7cbca8aaa33d0401eaba93a20e502229174c87e43a115fd6a425899b056b2fb4c9014c277b0bac190522a060153fdac9fb4d4c8ffb726777fd2794c7ba350e8849fe8dfd28af4a12bd0db39705de440c15fa362b03dcc15001f1a1115d14e5e2bd274b54be2b845e0fa6c374050aef97c38922b11f77f3bdcd43d4f14ca93fb58b84af64f2d01421
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityTrue
    SerialNumber3d78d7f9764960b2617df4f01eca862a
    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

    Imports

    Expand
    • ntoskrnl.exe
    • HAL.dll

    Imported Functions

    Expand
    • IoCreateDevice
    • IoCreateSymbolicLink
    • IoDeleteDevice
    • IoDeleteSymbolicLink
    • KeDelayExecutionThread
    • DbgPrint
    • KeInitializeEvent
    • KeClearEvent
    • KeWaitForSingleObject
    • ExAllocatePoolWithTag
    • IofCompleteRequest
    • IoBuildDeviceIoControlRequest
    • IofCallDriver
    • IoGetDeviceObjectPointer
    • MmMapIoSpace
    • MmUnmapIoSpace
    • ObReferenceObjectByHandle
    • ZwClose
    • ZwOpenSection
    • ZwMapViewOfSection
    • ZwUnmapViewOfSection
    • ExFreePoolWithTag
    • RtlInitUnicodeString
    • HalTranslateBusAddress

    Exported Functions

    Expand

    Sections

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

    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": "4c655dbb2b80013dab25929458a43f5f",
      "Signature": "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",
      "SignatureAlgorithmOID": "1.2.840.113549.1.1.11",
      "Subject": "C=TW, ST=Taiwan, L=Taipei, O=Compal electronic ,inc, CN=Compal electronic ,inc",
      "TBS": {
        "MD5": "3a312763f609a88cc1cb274558e6592c",
        "SHA1": "c670abc62035c7769ac901b4a8b7eb7643c8155a",
        "SHA256": "6d0eb02c8d4ab2514afc97de0ce6ac2ec00df72ae1cfc0c08ef0aea3ad7235d0",
        "SHA384": "d612128b13384eee92c8f72ea077ffd85ddc32e8f6e4e077bed91d48b5359c830daa5d4d057beeb0c32eb7d4818b7530"
      },
      "ValidFrom": "2015-05-13 00:00:00",
      "ValidTo": "2018-06-11 23:59:59",
      "Version": 3
    },
    {
      "IsCertificateAuthority": true,
      "SerialNumber": "3d78d7f9764960b2617df4f01eca862a",
      "Signature": "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",
      "SignatureAlgorithmOID": "1.2.840.113549.1.1.11",
      "Subject": "C=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 SHA256 Code Signing CA",
      "TBS": {
        "MD5": "1f056ff7d5f874984dc605402b7cb042",
        "SHA1": "bdb348353a2203deb4b767914fa1bd7248dd728b",
        "SHA256": "a08e79c386083d875014c409c13d144e0a24386132980df11ff59737c8489eb1",
        "SHA384": "fa2729064b49e0d77540c1ee95d5f74acaf8eaf55197851a3a40383335f8113e51190bc48b552196edf8ac5cf0c89278"
      },
      "ValidFrom": "2013-12-10 00:00:00",
      "ValidTo": "2023-12-09 23:59:59",
      "Version": 3
    },
    {
      "IsCertificateAuthority": true,
      "SerialNumber": "611993e400000000001c",
      "Signature": "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",
      "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
    }
  ],
  "CertificatesInfo": "",
  "Signer": [
    {
      "Issuer": "C=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 SHA256 Code Signing CA",
      "SerialNumber": "4c655dbb2b80013dab25929458a43f5f",
      "Version": 1
    }
  ],
  "SignerInfo": ""
}

    source

    last_updated: 2025-04-02