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Code Injection by ld.so Preload — Sigma Rule

Sigma rule 7e3c4651-c347-40c4-b1d4-d48590fdf684. Code Injection by ld.so Preload — Sigma Rule. Detects the ld.so preload persistence file. See `man ld.so` for more information.

Rule metadata and linked tags

Author: Christian Burkard (Nextron Systems). Source status: test; severity: high. Source dates: 2021-05-05 / 2022-10-09.

{
  "product": "linux"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 7f1555a53fcc787bfd7fdec9cbda5d7c8c19a7068ceebdef944a4c17d64dac80

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Code Injection by ld.so Preload
id: 7e3c4651-c347-40c4-b1d4-d48590fdf684
status: test
description: Detects the ld.so preload persistence file. See `man ld.so` for more information.
references:
    - https://man7.org/linux/man-pages/man8/ld.so.8.html
author: Christian Burkard (Nextron Systems)
date: 2021-05-05
modified: 2022-10-09
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.execution
    - attack.stealth
    - attack.t1574.006
logsource:
    product: linux
detection:
    keywords:
        - '/etc/ld.so.preload'
    condition: keywords
falsepositives:
    - Rare temporary workaround for library misconfiguration
level: high

Original YAML and metadata in JSON

False positives

  • Rare temporary workaround for library misconfiguration

Source references

Connected ecosystem references

Exact source-tagged techniques

Telemetry review

Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.

Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.