Potential Secure Deletion with SDelete

calendar Apr 28, 2026 · attack.impact attack.stealth attack.defense-impairment attack.t1070.004 attack.t1027.005 attack.t1485 attack.t1553.002 attack.s0195  ·
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Detects files that have extensions commonly seen while SDelete is used to wipe files.

Sigma rule (View on GitHub)

 1title: Potential Secure Deletion with SDelete
 2id: 39a80702-d7ca-4a83-b776-525b1f86a36d
 3status: test
 4description: Detects files that have extensions commonly seen while SDelete is used to wipe files.
 5references:
 6    - https://jpcertcc.github.io/ToolAnalysisResultSheet/details/sdelete.htm
 7    - https://www.jpcert.or.jp/english/pub/sr/ir_research.html
 8    - https://learn.microsoft.com/en-gb/sysinternals/downloads/sdelete
 9author: Thomas Patzke
10date: 2017-06-14
11modified: 2024-12-13
12tags:
13    - attack.impact
14    - attack.stealth
15    - attack.defense-impairment
16    - attack.t1070.004
17    - attack.t1027.005
18    - attack.t1485
19    - attack.t1553.002
20    - attack.s0195
21logsource:
22    product: windows
23    service: security
24detection:
25    selection:
26        EventID:
27            - 4656
28            - 4663
29            - 4658
30        ObjectName|endswith:
31            - '.AAA'
32            - '.ZZZ'
33    condition: selection
34falsepositives:
35    - Legitimate usage of SDelete
36    - Files that are interacted with that have these extensions legitimately
37level: medium

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