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.persistence
12    - attack.defense-evasion
13    - attack.t1053.003
14
15logsource:
16    product: linux
17    category: file_event
18detection:
19    selection:
20        TargetFilename|endswith: 'ebpfbackdoor'
21    condition: selection
22falsepositives:
23    - Unlikely
24level: high

References

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