sigmamediumHunting

Deleted Data Overwritten Via Cipher.EXE

Detects usage of the "cipher" built-in utility in order to overwrite deleted data from disk. Adversaries may destroy data and files on specific systems or in large numbers on a network to interrupt availability to systems, services, and network resources. Data destruction is likely to render stored data irrecoverable by forensic techniques through overwriting files or data on local and remote drives

MITRE ATT&CK

T1485

impact

Detection Query

selection_img:
  - OriginalFileName: CIPHER.EXE
  - Image|endswith: \cipher.exe
selection_cli:
  CommandLine|contains: " /w:"
condition: all of selection_*

Author

frack113

Created

2021-12-26

Data Sources

windowsProcess Creation Events

Platforms

windows

References

https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md#atomic-test-3---overwrite-deleted-data-on-c-drive

Tags

attack.impactattack.t1485

Raw Content

title: Deleted Data Overwritten Via Cipher.EXE
id: 4b046706-5789-4673-b111-66f25fe99534
status: test
description: |
    Detects usage of the "cipher" built-in utility in order to overwrite deleted data from disk.
    Adversaries may destroy data and files on specific systems or in large numbers on a network to interrupt availability to systems, services, and network resources.
    Data destruction is likely to render stored data irrecoverable by forensic techniques through overwriting files or data on local and remote drives
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md#atomic-test-3---overwrite-deleted-data-on-c-drive
author: frack113
date: 2021-12-26
modified: 2023-02-21
tags:
    - attack.impact
    - attack.t1485
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - OriginalFileName: 'CIPHER.EXE'
        - Image|endswith: '\cipher.exe'
    selection_cli:
        CommandLine|contains: ' /w:'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_cipher_overwrite_deleted_data/info.yml
simulation:
    - type: atomic-red-team
      name: Overwrite deleted data on C drive
      technique: T1485
      atomic_guid: 321fd25e-0007-417f-adec-33232252be19