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LoJax

LoJax is a UEFI rootkit used by APT28 to persist remote access software on targeted systems.[1]

ID: S0397
ⓘ
Type: MALWARE
ⓘ
Platforms: Windows
Contributors: Jean-Ian Boutin, ESET
Version: 1.1
Created: 02 July 2019
Last Modified: 25 April 2025
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Enterprise Layer
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Techniques Used

Domain ID Name Use
Enterprise T1547 .001 Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder

LoJax has modified the Registry key ‘HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\BootExecute’ from ‘autocheck autochk ’ to ‘autocheck autoche ’ in order to execute its payload during Windows startup.[1]
Enterprise T1564 .004 Hide Artifacts: NTFS File Attributes

LoJax has loaded an embedded NTFS DXE driver to be able to access and write to NTFS partitions.[1]
Enterprise T1112 Modify Registry

LoJax has modified the Registry key ‘HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\BootExecute’ from ‘autocheck autochk ’ to ‘autocheck autoche ’.[1]
Enterprise T1542 .001 Pre-OS Boot: System Firmware

LoJax is a UEFI BIOS rootkit deployed to persist remote access software on some targeted systems.[1]

Enterprise T1014 Rootkit

LoJax is a UEFI BIOS rootkit deployed to persist remote access software on some targeted systems.[1]

Groups That Use This Software

ID Name References
G0007 APT28

[1]

References

  1. ESET. (2018, September). LOJAX First UEFI rootkit found in the wild, courtesy of the Sednit group. Retrieved July 2, 2019.