BPF-based process_dns_events table in osquery

by alessandrogario 4 years ago

GNU/Linux ◆ xterm-256color ◆ zsh 300 views

The process_dns_events table is able to capture getaddrinfo (and alternatives) invocations system wide making use of BPF and Uprobes. Does not require kernel headers or external libraries.

In this demo, we are capturing the “node” and “service” parameters from the getaddrinfo function inside the libc library.

Implemented using the ebpfpub library (https://github.com/trailofbits/ebpfpub).

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