Convert indexed Sigma rules into analyst-ready detections.

title: All Backups Deleted Via Wbadmin.EXE
id: 639c9081-f482-47d3-a0bd-ddee3d4ecd76
related:
    - id: 89f75308-5b1b-4390-b2d8-d6b2340efaf8
      type: derived
status: test
description: |
    Detects the deletion of all backups or system state backups via "wbadmin.exe".
    This technique is used by numerous ransomware families and actors.
    This may only be successful on server platforms that have Windows Backup enabled.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md#atomic-test-5---windows---delete-volume-shadow-copies-via-wmi-with-powershell
    - https://github.com/albertzsigovits/malware-notes/blob/558898932c1579ff589290092a2c8febefc3a4c9/Ransomware/Lockbit.md
    - https://www.sentinelone.com/labs/ranzy-ransomware-better-encryption-among-new-features-of-thunderx-derivative/
    - https://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/ransomware-report-avaddon-and-new-techniques-emerge-industrial-sector-targeted
    - https://www.trendmicro.com/content/dam/trendmicro/global/en/research/24/b/lockbit-attempts-to-stay-afloat-with-a-new-version/technical-appendix-lockbit-ng-dev-analysis.pdf
    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/wbadmin-delete-systemstatebackup
author: frack113, Nasreddine Bencherchali (Nextron Systems)
date: 2021-12-13
modified: 2024-05-10
tags:
    - attack.impact
    - attack.t1490
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\wbadmin.exe'
        - OriginalFileName: 'WBADMIN.EXE'
    selection_cli:
        CommandLine|contains|all:
            - 'delete'
            - 'backup' # Also covers "SYSTEMSTATEBACKUP"
        CommandLine|contains: 'keepVersions:0'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high