Veeam Backup Servers Credential Dumping Script Execution

Description

Detects execution of a PowerShell script that contains calls to the "Veeam.Backup" class, in order to dump stored credentials.

Query · sigma

selection:
  ScriptBlockText|contains|all:
  - '[Credentials]'
  - '[Veeam.Backup.Common.ProtectedStorage]::GetLocalString'
  - Invoke-Sqlcmd
  - Veeam Backup and Replication
condition: selection

Known false positives

  • Administrators backup scripts (must be investigated)
Raw source Veeam Backup Servers Credential Dumping Script Execution · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Veeam Backup Servers Credential Dumping Script Execution
id: 976d6e6f-a04b-4900-9713-0134a353e38b
status: test
description: Detects execution of a PowerShell script that contains calls to the "Veeam.Backup" class, in order to dump stored credentials.
references:
    - https://www.pwndefend.com/2021/02/15/retrieving-passwords-from-veeam-backup-servers/
    - https://labs.withsecure.com/publications/fin7-target-veeam-servers
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-04
tags:
    - attack.credential-access
logsource:
    product: windows
    category: ps_script
    definition: bade5735-5ab0-4aa7-a642-a11be0e40872
detection:
    selection:
        ScriptBlockText|contains|all:
            - '[Credentials]'
            - '[Veeam.Backup.Common.ProtectedStorage]::GetLocalString'
            - 'Invoke-Sqlcmd'
            - 'Veeam Backup and Replication'
    condition: selection
falsepositives:
    - Administrators backup scripts (must be investigated)
level: high

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