According to ESET’s researchers, components of FontOnLake malware are divided into three groups: Trojamized app, Rootkit, and Backdoor.
Researchers at Slovak cybersecurity company ESET have identified a new malware family utilizing custom and well-designed modules. In ESET’s white paper [PDF], researchers revealed that the malware dubbed FontOnLake Rootkit malware targets Linux systems and its modules are under active development.
The malware samples uploaded to VirusTotal indicate that the first intrusion through this previously unidentified threat happened in May 2020. Tencent, Lacework Labs, and Avast are also tracking this malware using the moniker HCRootkit.
— Avast Threat Labs (@AvastThreatLabs) August 25, 2021
Researchers noted in their report that FontOnLake has a “sneaky nature,” “advanced design,” and “low prevalence.” Therefore, it is easier to use this malware in targeted attacks.
According to ESET researcher Vladislav Hrčka, it
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