BPFDoor: A Stealthy Variant of Linux Backdoor


BPFDoor: A Stealthy Variant of Linux Backdoor

Deep Instinct has spotted a previously undocumented and mostly undetected variant of a Linux backdoor called BPFDoor.

The malware remains an extremely stealthy and difficult to detect malware with this latest iteration, the company says.

BPFDoor gets its name from the use of Berkeley Packet Filters (BPF) – a technology that makes it possible to analyze and filter network traffic in Linux systems – for network communications and process incoming commands.

Deep Instinct discovered the previously undiscovered variant of the malware in a specimen uploaded to VirusTotal on February 8, 2023.

It is configured to ignore all operating system signals and to prevent it from being terminated by means of a stop-and-go menu when bootstraps are enabled.

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