APT / THREAT GROUP

FudModule

aliases

Last seen:Mar 17, 2026

Intelligence Profile

FudModule is a user-mode DLL that gets the ability to read and write arbitrary kernel memory via the BYOVD technique. Its main goal is to turn off Windows system monitoring features, which is done by modifying kernel variables and removing kernel callbacks. Its actions may very likely affect various types of security products, e.g. EDRs, firewalls, antimalware and even digital forensics tools.

Threat Analysis

FudModule 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://asec.ahnlab.com/ko/40495/

→https://asec.ahnlab.com/wp-content/uploads/2022/09/Analysis-Report-on-Lazarus-Groups-Rootkit-Attack-Using-BYOVD_Sep-22-2022.pdf

→https://decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-with-an-admin-to-kernel-zero-day/

→https://decoded.avast.io/luiginocamastra/from-byovd-to-a-0-day-unveiling-advanced-exploits-in-cyber-recruiting-scams/

→https://securityintelligence.com/posts/defensive-considerations-lazarus-fudmodule/

Quick Facts

TypeAPT / Threat Group

Aliases3

Also Known As

FudModulewin.fudmoduleLIGHTSHOW

External Intelligence

Malpedia: win.fudmodule

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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