APT / THREAT GROUP

Masuta

aliases

Last seen:Mar 17, 2026

Intelligence Profile

Masuta is a variant of Mirai that targets IoT devices, primarily routers, using dictionary attacks to target weak credentials. PureMasuta is a variant of Masuta that targets the EDB 38722 D-Link HNAP Bug.

Threat Analysis

Masuta 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://www.virusbulletin.com/virusbulletin/2018/12/vb2018-paper-tracking-mirai-variants/#h2-appendix-sample-sha256-hashes

→https://threatpost.com/satori-author-linked-to-new-mirai-variant-masuta/129640/

→https://blog.newskysecurity.com/masuta-satori-creators-second-botnet-weaponizes-a-new-router-exploit-2ddc51cc52a7

Quick Facts

TypeAPT / Threat Group

Aliases3

Also Known As

Masutaelf.masutaPureMasuta

External Intelligence

Malpedia: elf.masuta

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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