Code Injection by ld.so Preload

calendar Oct 23, 2025 · attack.defense-evasion attack.persistence attack.privilege-escalation attack.t1574.006  ·
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Detects the ld.so preload persistence file. See man ld.so for more information.

Sigma rule (View on GitHub)

 1title: Code Injection by ld.so Preload
 2id: 7e3c4651-c347-40c4-b1d4-d48590fdf684
 3status: test
 4description: Detects the ld.so preload persistence file. See `man ld.so` for more information.
 5references:
 6    - https://man7.org/linux/man-pages/man8/ld.so.8.html
 7author: Christian Burkard (Nextron Systems)
 8date: 2021-05-05
 9modified: 2022-10-09
10tags:
11    - attack.defense-evasion
12    - attack.persistence
13    - attack.privilege-escalation
14    - attack.t1574.006
15logsource:
16    product: linux
17detection:
18    keywords:
19        - '/etc/ld.so.preload'
20    condition: keywords
21falsepositives:
22    - Rare temporary workaround for library misconfiguration
23level: high

References

  • ld.so(8) - Linux manual page

    ld.so(8) — Linux manual page ld.so(8) System Manager's Manual ld.so(8) NAME         top ld.so, ld-linux.so - dynamic linker/loader SYNOPSIS         top The dynamic linker can be run either indirect...


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