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MalwareJul 30, 2026

Toy Ghouls’ new toy: the GenieLocker ransomware

New GenieLocker ransomware targets Windows, Linux, and ESXi, used by Toy Ghouls group.

Kaspersky experts have identified a new custom ransomware family named GenieLocker, active since March 2026. This ransomware, developed by the financially motivated Toy Ghouls group, targets Windows, Linux, and ESXi systems. The group previously used third-party ransomware but now employs this custom variant, which has been observed in attacks against organizations in the Russian Federation, primarily in the manufacturing sector.

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The lesson from this incident

Full lesson

The Toy Ghouls group has escalated their threat capability by developing a custom ransomware variant, GenieLocker, moving beyond reliance on third-party tools to a bespoke weapon targeting diverse operating environments including ESXi hypervisors. This shift signals a maturation of the threat actor and increases the risk of evasion against defenses tuned for known ransomware families. The targeting of manufacturing sector organizations highlights how operational technology-adjacent environments remain high-value ransomware targets. Organizations without robust, tested backups and segmented networks face significant recovery costs and operational downtime when custom ransomware bypasses signature-based detections.

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Indicators of Compromise

Extracted by AI from the linked source. Not reviewed by an editor. How this works

  • hash_md5 — 5d62c1349b8981c396c9a23f4f8f053c

Entities

Toy Ghouls (threat_actor)Kaspersky (vendor)Windows (product)Linux (product)ESXi (product)