bb808089-5857-4df2-8998-753a7106cb44

DBUtilDrv2.sys

Description

Dell DBUtilDrv2.sys versions 2.5, 2.6, and 2.7 all contain a write-what-where condition allowing kernel memory read/write. Dell released v2.7 as a remediation for CVE-2021-36276 but the fix was incomplete. Rapid7 confirmed v2.7 retains the kernel memory primitive and published the dellicious PoC and a Metasploit module (post/windows/manage/dell_memory_protect) that works against both v2.5 and v2.7. Dell categorized the v2.7 issue as a weakness rather than a vulnerability, stating it requires admin privileges.

UUID: bb808089-5857-4df2-8998-753a7106cb44
Created: 2023-01-09
Author: Michael Haag

Download

This download link contains the vulnerable driver!

Commands

sc.exe create DBUtilDrv2.sys binPath=C:\windows\temp\DBUtilDrv2.sys type=kernel &amp;&amp; sc.exe start DBUtilDrv2.sys

Use Case	Privileges	Operating System
Elevate privileges	kernel	Windows 10

Detections

YARA 🏹

Expand

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://www.bleepingcomputer.com/news/security/dell-driver-fix-still-allows-windows-kernel-level-attacks/

https://www.rapid7.com/db/modules/post/windows/manage/dell_memory_protect/

Known Vulnerable Samples

Property	Value
Filename	DBUtilDrv2.sys
Creation Timestamp	2019-11-19 13:14:20
MD5	dacb62578b3ea191ea37486d15f4f83c
SHA1	90a76945fd2fa45fab2b7bcfdaf6563595f94891
SHA256	2e6b339597a89e875f175023ed952aaac64e9d20d457bbc07acf1586e7fe2df8
Authentihash MD5	3736439958e5533142648f0d278fe7df
Authentihash SHA1	6bc2ab0f03d7a58685a165b519e8fee6937526a6
Authentihash SHA256	d7c683ef033ac2dc4dfa0dc61f39931f91c0e8fd19e613f664cb03e14112ef6e
RichPEHeaderHash MD5	7f1debacbafd3f259d7a213425c71b5f
RichPEHeaderHash SHA1	9f5421410b697087e15bde4d688b7f33370f386f
RichPEHeaderHash SHA256	cefbbb88c4a69bad4c4a1698a8713d367f533be903326056cfa6fdbf4303e736

Download

Certificates

Expand

Certificate 33000000857f83dc2a6ca979b8000000000085

Field	Value
ToBeSigned (TBS) MD5	85e8c40624a19ac2076dd91f49d8fb53
ToBeSigned (TBS) SHA1	621756d2a4e10231e34677a3c0f2a8d1fb0fb7ca
ToBeSigned (TBS) SHA256	442ba2fb3fc8ab1b1b3c71a45f6ea08ce00cea7eae124ef915d4c17622eb336a
Subject	C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Hardware Compatibility Publisher
ValidFrom	2019-06-05 18:06:32
ValidTo	2020-06-03 18:06:32
Signature	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
SignatureAlgorithmOID	1.2.840.113549.1.1.11
IsCertificateAuthority	False
SerialNumber	33000000857f83dc2a6ca979b8000000000085
Version	3

Certificate 610baac1000000000009

Field	Value
ToBeSigned (TBS) MD5	a569061297e8e824767dbc3184a69bea
ToBeSigned (TBS) SHA1	adbb26a587a8f44b4fccaecb306f980d1c55a150
ToBeSigned (TBS) SHA256	cec1afd0e310c55c1dcc601ab8e172917706aa32fb5eaf826813547fdf02dd46
Subject	C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Third Party Component CA 2012
ValidFrom	2012-04-18 23:48:38
ValidTo	2027-04-18 23:58:38
Signature	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
SignatureAlgorithmOID	1.2.840.113549.1.1.11
IsCertificateAuthority	True
SerialNumber	610baac1000000000009
Version	3

Imports

Expand

ntoskrnl.exe
WppRecorder.sys
WDFLDR.SYS

Imported Functions

Expand

MmGetSystemRoutineAddress
MmFreeContiguousMemorySpecifyCache
MmAllocateContiguousMemorySpecifyCache
MmUnmapIoSpace
MmMapIoSpace
MmGetPhysicalAddress
RtlCopyUnicodeString
KeSetPriorityThread
KeInsertQueueDpc
IoWMIRegistrationControl
RtlInitUnicodeString
imp_WppRecorderReplay
WppAutoLogStop
WppAutoLogStart
WppAutoLogTrace
WdfVersionUnbindClass
WdfVersionBindClass
WdfVersionUnbind
WdfVersionBind

Exported Functions

Expand

Sections

Expand

.text
.rdata
.data
.pdata
PAGE
INIT
.reloc

Signature

Expand

{
  "Certificates": [
    {
      "CertificateType": "Leaf (Code Signing)",
      "IsCA": false,
      "IsCertificateAuthority": false,
      "IsCodeSigning": true,
      "SerialNumber": "33000000857f83dc2a6ca979b8000000000085",
      "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": "85e8c40624a19ac2076dd91f49d8fb53",
        "SHA1": "621756d2a4e10231e34677a3c0f2a8d1fb0fb7ca",
        "SHA256": "442ba2fb3fc8ab1b1b3c71a45f6ea08ce00cea7eae124ef915d4c17622eb336a",
        "SHA384": "19b80fb83482cdb42c94c2eabac29e4db7777988905aab348bd7ed62e325d2ea1f4c80df0d7275abcb2b67585cfc7c36"
      },
      "ValidFrom": "2019-06-05 18:06:32",
      "ValidTo": "2020-06-03 18:06:32",
      "Version": 3
    },
    {
      "CertificateType": "CA",
      "IsCA": true,
      "IsCertificateAuthority": true,
      "IsCodeSigning": false,
      "SerialNumber": "610baac1000000000009",
      "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 2012",
      "TBS": {
        "MD5": "a569061297e8e824767dbc3184a69bea",
        "SHA1": "adbb26a587a8f44b4fccaecb306f980d1c55a150",
        "SHA256": "cec1afd0e310c55c1dcc601ab8e172917706aa32fb5eaf826813547fdf02dd46",
        "SHA384": "e947cac936803f5683196e4ff1b259096073395d0b908522ddce90d57597c9f7b57f7ddcdbe021ba863d843c340da8ba"
      },
      "ValidFrom": "2012-04-18 23:48:38",
      "ValidTo": "2027-04-18 23:58:38",
      "Version": 3
    }
  ],
  "CertificatesInfo": "",
  "Signer": [
    {
      "Issuer": "C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Third Party Component CA 2012",
      "SerialNumber": "33000000857f83dc2a6ca979b8000000000085",
      "Version": 1
    }
  ],
  "SignerInfo": ""
}

Property	Value
Filename	DBUtilDrv2.sys
Creation Timestamp	2021-05-06 19:20:18
MD5	d104621c93213942b7b43d65b5d8d33e
SHA1	b03b1996a40bfea72e4584b82f6b845c503a9748
SHA256	71fe5af0f1564dc187eea8d59c0fbc897712afa07d18316d2080330ba17cf009
Authentihash MD5	1e96108c0938d4c34d7072f04bc8b951
Authentihash SHA1	d46ae9bcc746ca408fbb55fb0d61b638720a8f25
Authentihash SHA256	7bacb353363cc29f7f3815a9d01e85cd86202d92378d1ab1b11df1ab2f42f40a
RichPEHeaderHash MD5	55da99917deafbd2428eba37ab352764
RichPEHeaderHash SHA1	72420433a55e6c3b3dd02e90ad238c5f5f632344
RichPEHeaderHash SHA256	7c8e32c30b6f8a981e4b54696e979a23cc9662b6440c2c8833494bc6d17cd9fe
Company	Dell
Description	DBUtil
Product	DBUtil

Download

Certificates

Expand

Certificate 33000000b5213fca1e4aa03de40000000000b5

Field	Value
ToBeSigned (TBS) MD5	a0dd89c33c4973bf6758331e200fb6de
ToBeSigned (TBS) SHA1	65ff7fa429c0f08f8a8bf30509e8ca2919d9edb5
ToBeSigned (TBS) SHA256	29a7b646af062aee3bf37d1ba190211365116db7d7aa4cb87ba268843262ae47
Subject	C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Hardware Compatibility Publisher
ValidFrom	2020-12-15 22:15:33
ValidTo	2021-12-02 22:15:33
Signature	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
SignatureAlgorithmOID	1.2.840.113549.1.1.11
IsCertificateAuthority	False
SerialNumber	33000000b5213fca1e4aa03de40000000000b5
Version	3

Certificate 610baac1000000000009

Field	Value
ToBeSigned (TBS) MD5	a569061297e8e824767dbc3184a69bea
ToBeSigned (TBS) SHA1	adbb26a587a8f44b4fccaecb306f980d1c55a150
ToBeSigned (TBS) SHA256	cec1afd0e310c55c1dcc601ab8e172917706aa32fb5eaf826813547fdf02dd46
Subject	C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Third Party Component CA 2012
ValidFrom	2012-04-18 23:48:38
ValidTo	2027-04-18 23:58:38
Signature	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
SignatureAlgorithmOID	1.2.840.113549.1.1.11
IsCertificateAuthority	True
SerialNumber	610baac1000000000009
Version	3

Imports

Expand

ntoskrnl.exe
WDFLDR.SYS

Imported Functions

Expand

MmMapIoSpace
MmUnmapIoSpace
MmAllocateContiguousMemorySpecifyCache
KeSetPriorityThread
MmGetPhysicalAddress
KeBugCheckEx
KeInsertQueueDpc
RtlCopyUnicodeString
IoWMIRegistrationControl
MmGetSystemRoutineAddress
MmFreeContiguousMemorySpecifyCache
RtlInitUnicodeString
WdfVersionBind
WdfVersionUnbind
WdfVersionUnbindClass
WdfVersionBindClass

Exported Functions

Expand

Sections

Expand

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

Signature

Expand

{
  "Certificates": [
    {
      "CertificateType": "Leaf (Code Signing)",
      "IsCA": false,
      "IsCertificateAuthority": false,
      "IsCodeSigning": true,
      "SerialNumber": "33000000857f83dc2a6ca979b8000000000085",
      "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": "85e8c40624a19ac2076dd91f49d8fb53",
        "SHA1": "621756d2a4e10231e34677a3c0f2a8d1fb0fb7ca",
        "SHA256": "442ba2fb3fc8ab1b1b3c71a45f6ea08ce00cea7eae124ef915d4c17622eb336a",
        "SHA384": "19b80fb83482cdb42c94c2eabac29e4db7777988905aab348bd7ed62e325d2ea1f4c80df0d7275abcb2b67585cfc7c36"
      },
      "ValidFrom": "2019-06-05 18:06:32",
      "ValidTo": "2020-06-03 18:06:32",
      "Version": 3
    },
    {
      "CertificateType": "CA",
      "IsCA": true,
      "IsCertificateAuthority": true,
      "IsCodeSigning": false,
      "SerialNumber": "610baac1000000000009",
      "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 2012",
      "TBS": {
        "MD5": "a569061297e8e824767dbc3184a69bea",
        "SHA1": "adbb26a587a8f44b4fccaecb306f980d1c55a150",
        "SHA256": "cec1afd0e310c55c1dcc601ab8e172917706aa32fb5eaf826813547fdf02dd46",
        "SHA384": "e947cac936803f5683196e4ff1b259096073395d0b908522ddce90d57597c9f7b57f7ddcdbe021ba863d843c340da8ba"
      },
      "ValidFrom": "2012-04-18 23:48:38",
      "ValidTo": "2027-04-18 23:58:38",
      "Version": 3
    }
  ],
  "CertificatesInfo": "",
  "Signer": [
    {
      "Issuer": "C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Third Party Component CA 2012",
      "SerialNumber": "33000000857f83dc2a6ca979b8000000000085",
      "Version": 1
    }
  ],
  "SignerInfo": ""
}

source

last_updated: 2026-04-20

bb808089-5857-4df2-8998-753a7106cb44

DBUtilDrv2.sys

Description

Block DBUtilDrv2.sys across your endpoints

Commands

Detections

YARA 🏹

Sigma 🛡️

Sysmon 🔎

Resources

Known Vulnerable Samples

Certificates

Certificate 33000000857f83dc2a6ca979b8000000000085

Certificate 610baac1000000000009

Imports

Imported Functions

Exported Functions

Sections

Signature

Certificates

Certificate 33000000b5213fca1e4aa03de40000000000b5

Certificate 610baac1000000000009

Imports

Imported Functions

Exported Functions

Sections

Signature