e91a68c8-807d-4b65-a86b-c51335730c55

bootx64.efi :inline

Description

This was provided by Fedora Project and revoked Jul-20

  • UUID: e91a68c8-807d-4b65-a86b-c51335730c55
  • 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\bootx64.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 🔎

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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

  • CVE-2020-10713
  • CVE-2020-14308
  • CVE-2020-14309
  • CVE-2020-14310
  • CVE-2020-14311
  • CVE-2020-15705
  • CVE-2020-15706
  • CVE-2020-15707

    • Known Vulnerable Samples

    PropertyValue
    Filenamebootx64.efi
    MD5abd377408acc02ee7f2f16320ee9b49a
    SHA1b72252c1c92cac65c4a4637816b0a84428d16681
    SHA256475552c7476ad45e42344eee8b30d44c264d200ac2468428aa86fc8795fb6e34
    Authentihash MD5fb4d9da53892bb0152dcfd7a4a150fe0
    Authentihash SHA1a070bfbb64dc542d7b6b22de52d9b4d994b0d2f1
    Authentihash SHA256dbaf9e056d3d5b38b68553304abc88827ebc00f80cb9c7e197cdbc5822cd316c
    RichPEHeaderHash MD5ffdf660eb1ebf020a1d0a55a90712dfb
    RichPEHeaderHash SHA13e905e3d061d0d59de61fcf39c994fcb0ec1bab3
    RichPEHeaderHash SHA2562b3f99a94b7a7132854be769e27b331419c53989ef42f686d6f5ba09ddefefd6

    Certificates

    Expand
    Certificate 3300000010a4912943d94ce62e000100000010
    FieldValue
    ToBeSigned (TBS) MD561509fd4e01160eb7d8007dc182bee5b
    ToBeSigned (TBS) SHA1febd34ec96d90e498d9b6fa54d7fab80ce1464d3
    ToBeSigned (TBS) SHA2567d79e52d96bc7c571299d90c3bc4bff9d08e36eb74b7e8b0cd69114980737953
    SubjectC=US, ST=Washington, L=Redmond, O=Microsoft Corporation, OU=MOPR, CN=Microsoft Windows UEFI Driver Publisher
    ValidFrom2014-10-01 18:02:10
    ValidTo2016-01-01 18:02:10
    Signature2b1b08b20674b8acbad524875a42f0b4d4ba6df424b9adb1e83c9309e657fe499f386cdf93a4f71393ab57da5eee4e346ebccdf9a7e990b44a76433af4071e90ee0e0fc8744003f9afe6bdda1cbd132fef8235d39c932bb9960f52bbea2062ed773a52beef26b333f603d8e9a0a9652c222a013cb1bd44bb5dc96c1a4135284c91784f0d66a2d7d97c59e26fd19d645e730b656d56e7a8166f228a751a745c4491f1865c8d5a4b1bf61fd4a564811e32699deff03a3328829cd888ae53fccb0819957ee499a2ad79d1c1d73ef7324562bee86575193983b41f66c12c95eb5d171df5c4beda799c4fb314e8e27bc47b195e1c8a2cd2d3bfbb29c8264ebddf95da
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityFalse
    SerialNumber3300000010a4912943d94ce62e000100000010
    Version3
    Certificate 6108d3c4000000000004
    FieldValue
    ToBeSigned (TBS) MD51f23e75a000f0b6db92650dc26ac98e1
    ToBeSigned (TBS) SHA1bc477f73f16f0a5ae09e8ce4745c0a79c0e9a39d
    ToBeSigned (TBS) SHA2569589b8c95168f79243f61922faa5990de0a4866de928736fed658ea7bff1a5e2
    SubjectC=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Corporation UEFI CA 2011
    ValidFrom2011-06-27 21:22:45
    ValidTo2026-06-27 21:32:45
    Signature350842ff30cccef7760cad1068583529463276277cef124127421b4aaa6d813848591355f3e95834a6160b82aa5dad82da808341068fb41df203b9f31a5d1bf15090f9b3558442281c20bdb2ae5114c5c0ac9795211c90db0ffc779e95739188cabdbd52b905500ddf579ea061ed0de56d25d9400f1740c8cea34ac24daf9a121d08548fbdc7bcb92b3d492b1f32fc6a21694f9bc87e4234fc3606178b8f2040c0b39a257527cdc903a3f65dd1e736547ab950b5d312d107bfbb74dfdc1e8f80d5ed18f42f14166b2fde668cb023e5c784d8edeac13382ad564b182df1689507cdcff072f0aebbdd8685982c214c332bf00f4af06887b592553275a16a826a3ca32511a4edadd704aecbd84059a084d1954c6291221a741d8c3d470e44a6e4b09b3435b1fab653a82c81eca40571c89db8bae81b4466e447540e8e567fb39f1698b286d0683e9023b52f5e8f50858dc68d825f41a1f42e0de099d26c75e4b669b52186fa07d1f6e24dd1daad2c77531e253237c76c52729586b0f135616a19f5b23b815056a6322dfea289f94286271855a182ca5a9bf830985414a64796252fc826e441941a5c023fe596e3855b3c3e3fbb47167255e22522b1d97be703062aa3f71e9046c3000dd61989e30e352762037115a6efd027a0a0593760f83894b8e07870f8ba4c868794f6e0ae0245ee65c2b6a37e69167507929bf5a6bc598358
    SignatureAlgorithmOID1.2.840.113549.1.1.11
    IsCertificateAuthorityTrue
    SerialNumber6108d3c4000000000004
    Version3

    Imports

    Expand

    Imports

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    ImportedFunctions

    Expand

    ExportedFunctions

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    Signature

    Expand
    {
  "Certificates": [
    {
      "IsCertificateAuthority": false,
      "SerialNumber": "3300000010a4912943d94ce62e000100000010",
      "Signature": "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",
      "SignatureAlgorithmOID": "1.2.840.113549.1.1.11",
      "Subject": "C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, OU=MOPR, CN=Microsoft Windows UEFI Driver Publisher",
      "TBS": {
        "MD5": "61509fd4e01160eb7d8007dc182bee5b",
        "SHA1": "febd34ec96d90e498d9b6fa54d7fab80ce1464d3",
        "SHA256": "7d79e52d96bc7c571299d90c3bc4bff9d08e36eb74b7e8b0cd69114980737953"
      },
      "ValidFrom": "2014-10-01 18:02:10",
      "ValidTo": "2016-01-01 18:02:10",
      "Version": 3
    },
    {
      "IsCertificateAuthority": true,
      "SerialNumber": "6108d3c4000000000004",
      "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 Corporation UEFI CA 2011",
      "TBS": {
        "MD5": "1f23e75a000f0b6db92650dc26ac98e1",
        "SHA1": "bc477f73f16f0a5ae09e8ce4745c0a79c0e9a39d",
        "SHA256": "9589b8c95168f79243f61922faa5990de0a4866de928736fed658ea7bff1a5e2"
      },
      "ValidFrom": "2011-06-27 21:22:45",
      "ValidTo": "2026-06-27 21:32:45",
      "Version": 3
    }
  ],
  "CertificatesInfo": "",
  "Signer": [
    {
      "Issuer": "C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=Microsoft Corporation UEFI CA 2011",
      "SerialNumber": "3300000010a4912943d94ce62e000100000010",
      "Version": 1
    }
  ],
  "SignerInfo": ""
}

    source

    last_updated: 2023-08-31