Potential File Overwrite Via Sysinternals SDelete — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: high. Source dates: 2021-06-03 / 2023-02-28.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 11a7b8d84c5162e256feddffa51383ff62d48020857977fff5bb91a3f2781ae9

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Potential File Overwrite Via Sysinternals SDelete
id: a4824fca-976f-4964-b334-0621379e84c4
status: test
description: Detects the use of SDelete to erase a file not the free space
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md
author: frack113
date: 2021-06-03
modified: 2023-02-28
tags:
    - attack.impact
    - attack.t1485
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        OriginalFileName: sdelete.exe
    filter:
        CommandLine|contains:
            - ' -h'
            - ' -c'
            - ' -z'
            - ' /\?'
    condition: selection and not filter
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md