2a4a532a-848c-4ca5-a910-357daefe32e7

shim-0.9+1474479173.6c180c6-1ubuntu1/shim64-bit.efi :inline

Description

This was provided by Canonical Ltd and revoked Apr-21

  • UUID: 2a4a532a-848c-4ca5-a910-357daefe32e7
  • 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\shim-0.9+1474479173.6c180c6-1ubuntu1/shim64-bit.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-2020-14372
  • CVE-2020-25632
  • CVE-2020-25647
  • CVE-2020-27749
  • CVE-2020-27779
  • CVE-2021-3418
  • CVE-2021-20225
  • CVE-2021-20233

    • Known Vulnerable Samples

    PropertyValue
    Filenameshim-0.9+1474479173.6c180c6-1ubuntu1/shim64-bit.efi
    MD59671f8d6de959b9d084f2a67f6dfadf3
    SHA1f7df1f4af46adceea20652bc796d86b47d9eeb6c
    SHA2563c430c719c9053a74d74dcc5e52b40d10f109db1dc9458a05a7a413b86a93467
    Authentihash MD5e04975ca0b4139e160f03ab301fe80b6
    Authentihash SHA18b736cf22a54133d32665bed98eedf76755e0b10
    Authentihash SHA2564cd73702d6b209ea8d57657ac4603c8127134d01973d84018af7c68335751ad9
    RichPEHeaderHash MD5ffdf660eb1ebf020a1d0a55a90712dfb
    RichPEHeaderHash SHA13e905e3d061d0d59de61fcf39c994fcb0ec1bab3
    RichPEHeaderHash SHA2562b3f99a94b7a7132854be769e27b331419c53989ef42f686d6f5ba09ddefefd6

    Imports

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    Imports

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    ImportedFunctions

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    ExportedFunctions

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    Signature

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    source

    last_updated: 2023-08-31