b262ea41-bb3c-4682-9a8d-a4e52e495c6c

bootmgfw.efi :inline

Description

This was provided by Microsoft and revoked May-23

  • UUID: b262ea41-bb3c-4682-9a8d-a4e52e495c6c
  • Created: 2023-05-22
  • Author: Michael Haag
  • Acknowledgement: |

Download

This download link contains the Revoked Bootloader!

Commands

bcdedit /copy "{current}" /d "TheBoots" | {% if ($_ -match '{\S+}') { bcdedit /set $matches[0] path \windows\temp\bootmgfw.efi } }
Use CasePrivilegesOperating System
Persistence64-bit

Detections

YARA 🏹

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Exact Match

with header and size limitation

Threat Hunting

without header and size limitation

Renamed

for renamed bootloader 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://uefi.org/revocationlistfile
  • https://support.microsoft.com/en-gb/topic/microsoft-guidance-for-applying-secure-boot-dbx-update-kb4575994-e3b9e4cb-a330-b3ba-a602-15083965d9ca

    • CVE

  • Black Lotus Microsoft Windows 8

    • Known Vulnerable Samples

    PropertyValue
    Filenamebootmgfw.efi
    MD57f5843d48a960315b047e5231470e1b6
    SHA1a9f1a7c49b57694d6f44de42e7675ccf07e0a57e
    SHA25681199ecb7a384d04f4e0f5541af731ca6ab0a04f1e2d692b4c386e0f02f15009
    Authentihash MD59ac88694e8ed9aee8005b00700994fd1
    Authentihash SHA1f1fcc53669caf87c89c1acec550dc9b989d5f4a8
    Authentihash SHA2567a0294ba07a2aee3648afc0daf2efd526a5b76349ec906f819c03bc217257638
    RichPEHeaderHash MD5fa6462badb7aa537a9d3ecf604e9fbd7
    RichPEHeaderHash SHA1caefdafc6f3620830b306d429c83bb077f6bdaa4
    RichPEHeaderHash SHA2564689fe3d6e35db99759219db2adef6cefa62105e8b636c0c5bd2a6bec395e471
    CompanyMicrosoft Corporation
    DescriptionBoot Manager
    ProductMicrosoft® Windows® Operating System
    OriginalFilenamebootmgr.exe

    Certificates

    Expand
    Certificate 610bbbd8000000000005
    FieldValue
    ToBeSigned (TBS) MD5158438012e4dcd69b27b762c9358cfa2
    ToBeSigned (TBS) SHA1684ac167849404a4101f166b759f291a43d5f749
    ToBeSigned (TBS) SHA25695b37dd7079bf6836ab18482231be07fb3c05055af99691f8c64c6ad26eb8f9c
    SubjectC=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows
    ValidFrom2012-04-09 20:55:50
    ValidTo2013-07-09 20:55:50
    Signaturec7f34d30f6c0451fb6ababdce5203035c20b7c75b16784adb0aa9ed8f647c02df4ce8d8277b8e356e3286e4dc0d444172dea83b9af9c6133c491e53680024d6bac0d985d6dfe776988ccb337b35abb32a02b50413514a576dc932b2a4ae2aef96330041e040480e3b1cbf06cd6910cf79ead3ecd332a9bb7156c2d9976e5dfac8b5b59d82ea33a4826470663dfad599e137468da7bd3037243e0238b96c1f99ea1299faa898dd854f812f8834697b7c5991d2e1656db4e2f56d8bc2077e7bb7d886d4fb6907c555c6d54089724435ac3345b1b6dbb605300ba83412517394dcd3b6c82df5013c6f57fcb1e03919b63469dd7606f3fbae8242658f19ab174b03c
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityFalse
    SerialNumber610bbbd8000000000005
    Version3
    Certificate 61077656000000000008
    FieldValue
    ToBeSigned (TBS) MD530a3f0b64324ed7f465e7fc618cb69e7
    ToBeSigned (TBS) SHA1002de3561519b662c5e3f5faba1b92c403fb7c41
    ToBeSigned (TBS) SHA2564e80be107c860de896384b3eff50504dc2d76ac7151df3102a4450637a032146
    SubjectC=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Production PCA 2011
    ValidFrom2011-10-19 18:41:42
    ValidTo2026-10-19 18:51:42
    Signature14fc7c7151a579c26eb2ef393ebc3c520f6e2b3f101373fea868d048a6344d8a960526ee3146906179d6ff382e456bf4c0e528b8da1d8f8adb09d71ac74c0a36666a8cec1bd70490a81817a49bb9e240323676c4c15ac6bfe404c0ea16d3acc368ef62acdd546c503058a6eb7cfe94a74e8ef4ec7c867357c2522173345af3a38a56c804da0709edf88be3cef47e8eaef0f60b8a08fb3fc91d727f53b8ebbe63e0e33d3165b081e5f2accd16a49f3da8b19bc242d090845f541dff89eaba1d47906fb0734e419f409f5fe5a12ab21191738a2128f0cede73395f3eab5c60ecdf0310a8d309e9f4f69685b67f51886647198da2b0123d812a680577bb914c627bb6c107c7ba7a8734030e4b627a99e9cafcce4a37c92da4577c1cfe3ddcb80f5afad6c4b30285023aeab3d96ee4692137de81d1f675190567d393575e291b39c8ee2de1cde445735bd0d2ce7aab1619824658d05e9d81b367af6c35f2bce53f24e235a20a7506f6185699d4782cd1051bebd088019daa10f105dfba7e2c63b7069b2321c4f9786ce2581706362b911203cca4d9f22dbaf9949d40ed1845f1ce8a5c6b3eab03d370182a0a6ae05f47d1d5630a32f2afd7361f2a705ae5425908714b57ba7e8381f0213cf41cc1c5b990930e88459386e9b12099be98cbc595a45d62d6a0630820bd7510777d3df345b99f979fcb57806f33a904cf77a4621c597e
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityTrue
    SerialNumber61077656000000000008
    Version3

    Imports

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    Imports

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    ImportedFunctions

    Expand

    ExportedFunctions

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    Signature

    Expand
    {
  "Certificates": [
    {
      "IsCertificateAuthority": false,
      "SerialNumber": "610bbbd8000000000005",
      "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",
      "TBS": {
        "MD5": "158438012e4dcd69b27b762c9358cfa2",
        "SHA1": "684ac167849404a4101f166b759f291a43d5f749",
        "SHA256": "95b37dd7079bf6836ab18482231be07fb3c05055af99691f8c64c6ad26eb8f9c"
      },
      "ValidFrom": "2012-04-09 20:55:50",
      "ValidTo": "2013-07-09 20:55:50",
      "Version": 3
    },
    {
      "IsCertificateAuthority": true,
      "SerialNumber": "61077656000000000008",
      "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 Production PCA 2011",
      "TBS": {
        "MD5": "30a3f0b64324ed7f465e7fc618cb69e7",
        "SHA1": "002de3561519b662c5e3f5faba1b92c403fb7c41",
        "SHA256": "4e80be107c860de896384b3eff50504dc2d76ac7151df3102a4450637a032146"
      },
      "ValidFrom": "2011-10-19 18:41:42",
      "ValidTo": "2026-10-19 18:51:42",
      "Version": 3
    }
  ],
  "CertificatesInfo": "",
  "Signer": [
    {
      "Issuer": "C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Windows Production PCA 2011",
      "SerialNumber": "610bbbd8000000000005",
      "Version": 1
    }
  ],
  "SignerInfo": ""
}

    source

    last_updated: 2023-08-31