HUI Loader

aliases

Last seen:Mar 17, 2026

Intelligence Profile

A loader that has been used by multiple threat actor groups since 2015.

Threat Analysis

HUI Loader is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.

External References

→https://attack.mitre.org/groups/G1021/

→https://blogs.jpcert.or.jp/ja/2022/05/HUILoader.html

→https://jsac.jpcert.or.jp/archive/2022/pdf/JSAC2022_9_yanagishita-tamada-nakatsuru-ishimaru_en.pdf

→https://medium.com/@morimolymoly/hui-loader-malware-analysis-note-4fa0e1c791d3

→https://www.secureworks.com/research/bronze-starlight-ransomware-operations-use-hui-loader

Quick Facts

TypeAPT / Threat Group

Aliases3

Also Known As

SIDESTEPHUI Loaderwin.hui_loader

External Intelligence

Malpedia: win.hui_loader

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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