e638d650-dd39-49a9-a737-b02670064e45

shim64-bit.efi :inline

Description

This was provided by Canonical Ltd and revoked Apr-21

  • UUID: e638d650-dd39-49a9-a737-b02670064e45
  • 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\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
    Filenameshim64-bit.efi
    MD59bdc83ad343e8745e1f3d55c36cf2df6
    SHA1095b16e4a405e6d6dbdfc1475c941c64201d41b5
    SHA25684e680f95cd31db85663a5482a68778dd236503d88e8a6d8e3c4a6c9ba201102
    Authentihash MD52906120c5459cec104e70135cc2c7ffb
    Authentihash SHA1e0a77a7cdefc31ecba261fcd6181b97efce9cc49
    Authentihash SHA256273d4432af53f07f8fb2013bb13d70bd46ea49c6c1c9de6c631ae4d75c98baf0
    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