Quasar Linux (QLNX) is an advanced, previously undocumented Linux Remote Access Trojan (RAT) designed to compromise developer workstations and facilitate supply chain attacks. It employs sophisticated evasion techniques, including fileless execution, process name spoofing, and dynamically compiled LD_PRELOAD and eBPF rootkits, alongside a PAM backdoor to harvest critical cloud and repository credentials.
Linux RAT
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Quasar Linux (QLNX) – A Silent Foothold in the Supply Chain: Inside a Full-Featured Linux RAT With Rootkit, PAM Backdoor, Credential Harvesting Capabilities