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EncryptHub, also tracked as Water Gamayu and Larva-208, is a cybercriminal threat actor active in 2025 that exploited CVE-2025-26633, a Microsoft Management Console security feature bypass, to deliver the MSC EvilTwin trojan loader. Activity attributed to this actor also involved deployment of multiple follow-on malware families, including the EncryptHub stealer, DarkWisp backdoor, SilentPrism backdoor, Stealc, and Rhadamanthys. The observed tradecraft demonstrates initial access through exploitation of a client-side Microsoft vulnerability, followed by malware delivery and post-compromise payload staging. The use of commodity stealers alongside custom or semi-custom loaders and backdoors indicates an intrusion set oriented toward credential and information theft, persistence, and broader post-exploitation flexibility rather than espionage. High-confidence public reporting directly ties this actor to malware deployment via exploitation, but does not firmly establish nation-state sponsorship, geographic origin, or a broader victimology profile.
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1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
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Domains, IPs, and hashes tied to this actor, refreshed continuously.