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ESET discovered two Windows variants of the Linux-only SprySOCKS backdoor, named WIN_DRV and WIN_PLUS. WIN_DRV uses kernel drivers to hide network connections, processes, files, and registry keys. The backdoor supports over 30 commands and is linked to China-nexus threat actor Earth Lusca.
ESET discovered Windows variants of SprySOCKS Linux malware used between 2023 and 2024 against government organizations in Taiwan, Thailand, Pakistan, and Honduras. The variants, WIN_DRV and WIN_PLUS, add kernel-level stealth capabilities. ESET attributes the activity with high confidence to the Earth Lusca threat actor.
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