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System Binary Proxy Execution via ld.so
This rule detects the execution of a binary through the ld.so dynamic linker. Attackers may use this technique to execute binaries while attempting to evade detection.
Detection Logic
process where event.type == "start" and event.action == "exec" and process.parent.executable like (
"/lib/ld-linux*.so*", "/lib64/ld-linux*.so*", "/usr/lib/ld-linux*.so*", "/usr/lib64/ld-linux*.so*"
) and not (
process.executable in ("/usr/bin/uptime", "/usr/bin/xkbcomp") or
process.parent.command_line like ("*/home/*/JetBrains/*", "*/snap/intellij-idea-ultimate*") or
process.command_line like "sh -c*/usr/bin/xkbcomp*" or
process.working_directory like ("/users/*/.cache/JetBrains/*", "/var/tmp/mkinitramfs*", "/home/adoagent") or
process.command_line == "/usr/bin/python3.9 -V" or
process.args like "/users/*/.cache/JetBrains/*"
) Field Validations
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