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Potential Fileless Execution via O_TMPFILE

This rule identifies potential fileless ELF execution where a process is launched from an anonymous temporary executable path that appears as "/#<id>" in "process.executable". This pattern may be associated with…

Description

This rule identifies potential fileless ELF execution where a process is launched from an anonymous temporary executable path that appears as "/#<id>" in "process.executable". This pattern may be associated with "O_TMPFILE" and "execveat" with "AT_EMPTY_PATH", which can allow execution without a normal filesystem pathname.

Detection logic

Its licence does not clear it for publishing here

Sunturai publishes a detection's own text where the licence it arrived under has been reviewed and permits it, and Elastic License 2.0 has not. The query as its source wrote it, its canonical form and the hash that pins this revision are in the workspace record.

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Detection requirements

Platform
ContainersESXiLinuxmacOSWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source category
event_index

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