Triple Cross eBPF Rootkit Default Persistence

Detects the creation of "ebpfbackdoor" files in both "cron.d" and "sudoers.d" directories. Which both are related to the TripleCross persistence method

Sigma rule (View on GitHub)

 1title: Triple Cross eBPF Rootkit Default Persistence
 2id: 1a2ea919-d11d-4d1e-8535-06cda13be20f
 3status: test
 4description: Detects the creation of "ebpfbackdoor" files in both "cron.d" and "sudoers.d" directories. Which both are related to the TripleCross persistence method
 5references:
 6    - https://github.com/h3xduck/TripleCross/blob/12629558b8b0a27a5488a0b98f1ea7042e76f8ab/apps/deployer.sh
 7author: Nasreddine Bencherchali (Nextron Systems)
 8date: 2022-07-05
 9modified: 2022-12-31
10tags:
11    - attack.privilege-escalation
12    - attack.execution
13    - attack.persistence
14    - attack.defense-evasion
15    - attack.t1053.003
16
17logsource:
18    product: linux
19    category: file_event
20detection:
21    selection:
22        TargetFilename|endswith: 'ebpfbackdoor'
23    condition: selection
24falsepositives:
25    - Unlikely
26level: high

References

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