Potential Linux Process Code Injection Via DD Utility

testmedium
log source: linux · process_creationauthor Joseph Kamaudate 2023-12-01
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description

What this is, in brief.

Detects the injection of code by overwriting the memory map of a Linux process using the "dd" Linux command.

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tags

attack.privilege-escalationattack.stealthattack.t1055.009
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rule source (YAML)

title: Potential Linux Process Code Injection Via DD Utility
id: 4cad6c64-d6df-42d6-8dae-eb78defdc415
status: test
description: Detects the injection of code by overwriting the memory map of a Linux process using the "dd" Linux command.
references:
    - https://www.aon.com/cyber-solutions/aon_cyber_labs/linux-based-inter-process-code-injection-without-ptrace2/
    - https://github.com/AonCyberLabs/Cexigua/blob/34d338620afae4c6335ba8d8d499e1d7d3d5d7b5/overwrite.sh
author: Joseph Kamau
date: 2023-12-01
tags:
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1055.009
logsource:
    product: linux
    category: process_creation
detection:
    selection:
        Image|endswith: '/dd'
        CommandLine|contains|all:
            - 'of='
            - '/proc/'
            - '/mem'
    condition: selection
falsepositives:
    - Unknown
level: medium
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detects techniques (1)

ATT&CK techniques this enables or maps to.

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references

External citations — patches, advisories, analysis.