8041563b-fe86-4183-9409-a479ef4f9b46

cent-8.3-20200730-shimia32.efi :inline

Description

This was provided by Red Hat, Inc. and revoked Apr-21

  • UUID: 8041563b-fe86-4183-9409-a479ef4f9b46
  • 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\cent-8.3-20200730-shimia32.efi } }
Use CasePrivilegesOperating System
Persistence32-bit

Detections

YARA 🏹

Expand

Exact Match

with header and size limitation

Threat Hunting

without header and size limitation

Renamed

for renamed bootloader files

Sigma 🛡️

Expand

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

  • 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
    Filenamecent-8.3-20200730-shimia32.efi
    MD5
    SHA1
    SHA2565E9D231F7BC2F98E9CBFBE65DA29F7B663A1E84FEE090250BD0976D65DB3FC0A
    Authentihash MD5
    Authentihash SHA1
    Authentihash SHA256F5D396FC5AD8B7EAC22652129D56449DC30B6965CE3E41F5D76590E3B1ECFE62

    Imports

    Expand

    Imports

    Expand

    ImportedFunctions

    Expand

    ExportedFunctions

    Expand

    Signature

    Expand

    source

    last_updated: 2023-08-31