Published 2023-05-02
Keywords
- Syslogk,
- Rootkit,
- Botnet,
- Netfilter
Copyright (c) 2023 David Álvarez Pérez (Author)
This work is licensed under a Creative Commons Attribution 4.0 International License.
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Abstract
The proliferation of open source Linux kernel rootkits allows malware writers to speed up the process of developing complex malware. This study analyzes the Syslogk Linux kernel rootkit family which reuses code of Adore-Ng. Syslogk allows to remotely execute arbitrary commands and a hidden bot in different modes via "magic packets". Analyzing "magic packets" in reasonable time is a challenging task. Furthermore, the hidden bot, implements a proxy mode that allows to hide the IP address of the attacker while executing commands in other infected machines. This new botnet structure can also inspire future Linux threats, including IoT threats.
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