mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Bhavin Patel
55 lines
1.9 KiB
YAML
55 lines
1.9 KiB
YAML
name: Linux Preload Hijack Library Calls
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id: cbe2ca30-631e-11ec-8670-acde48001122
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version: 1
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date: '2021-12-22'
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author: Teoderick Contreras, Splunk
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status: production
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type: TTP
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description: This analytic is to detect a suspicious command that may hijack a library
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function in linux platform. This technique is commonly abuse by adversaries, malware
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author and red teamers to gain privileges and persist on the machine. This detection
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pertains to loading a dll to hijack or hook a library function of specific program
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using LD_PRELOAD command.
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data_source:
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- Sysmon Event ID 1
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search:
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selection1:
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CommandLine: '*LD_PRELOAD*'
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condition: selection1
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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endpoints. If you are using Sysmon, you can use the Add-on for Linux Sysmon from
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Splunkbase
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known_false_positives: Administrator or network operator can execute this command.
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Please update the filter macros to remove false positives.
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references:
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- https://compilepeace.medium.com/memory-malware-part-0x2-writing-userland-rootkits-via-ld-preload-30121c8343d5
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tags:
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analytic_story:
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- Linux Privilege Escalation
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- Linux Persistence Techniques
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asset_type: Endpoint
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confidence: 80
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impact: 80
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message: A commandline $process$ that may hijack library function on $dest$
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mitre_attack_id:
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- T1574.006
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- T1574
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observable:
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- name: dest
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type: Hostname
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role:
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- Victim
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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risk_score: 64
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1574.006/lib_hijack/sysmon_linux.log
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source: Syslog:Linux-Sysmon/Operational
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sourcetype: sysmon:linux
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