File Deletion

Detects file deletion using "rm", "shred" or "unlink" commands which are used often by adversaries to delete files left behind by the actions of their intrusion activity

Sigma rule (View on GitHub)

 1title: File Deletion
 2id: 30aed7b6-d2c1-4eaf-9382-b6bc43e50c57
 3status: stable
 4description: Detects file deletion using "rm", "shred" or "unlink" commands which are used often by adversaries to delete files left behind by the actions of their intrusion activity
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.004/T1070.004.md
 7author: Ömer Günal, oscd.community
 8date: 2020-10-07
 9modified: 2022-09-15
10tags:
11    - attack.defense-evasion
12    - attack.t1070.004
13logsource:
14    product: linux
15    category: process_creation
16detection:
17    selection:
18        Image|endswith:
19            - '/rm'     # covers /rmdir as well
20            - '/shred'
21            - '/unlink'
22    condition: selection
23falsepositives:
24    - Legitimate administration activities
25level: informational

References

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