title: Esentutl Volume Shadow Copy Service Keys
id: 5aad0995-46ab-41bd-a9ff-724f41114971
status: test
description: Detects the volume shadow copy service initialization and processing via esentutl. Registry keys such as HKLM\\System\\CurrentControlSet\\Services\\VSS\\Diag\\VolSnap\\Volume are captured.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1003.002/T1003.002.md#atomic-test-3---esentutlexe-sam-copy
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020-10-20
modified: 2022-12-25
tags:
    - attack.credential-access
    - attack.t1003.002
logsource:
    category: registry_event
    product: windows
detection:
    selection:
        TargetObject|contains: 'System\CurrentControlSet\Services\VSS'
        Image|endswith: 'esentutl.exe' # limit esentutl as in references, too many FP to filter
    filter:
        TargetObject|contains: 'System\CurrentControlSet\Services\VSS\Start'
    condition: selection and not filter
falsepositives:
    - Unknown
level: high

title: Esentutl Gather Credentials
id: 7df1713a-1a5b-4a4b-a071-dc83b144a101
status: test
description: Conti recommendation to its affiliates to use esentutl to access NTDS dumped file. Trickbot also uses this utilities to get MSEdge info via its module pwgrab.
references:
    - https://twitter.com/vxunderground/status/1423336151860002816
    - https://thedfirreport.com/2021/08/01/bazarcall-to-conti-ransomware-via-trickbot-and-cobalt-strike/
author: sam0x90
date: 2021-08-06
modified: 2022-10-09
tags:
    - attack.credential-access
    - attack.t1003
    - attack.t1003.003
    - attack.s0404
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - 'esentutl'
            - ' /p'
    condition: selection
falsepositives:
    - To be determined
level: medium

title: Esentutl Steals Browser Information
id: 6a69f62d-ce75-4b57-8dce-6351eb55b362
status: test
description: One way Qbot steals sensitive information is by extracting browser data from Internet Explorer and Microsoft Edge by using the built-in utility esentutl.exe
references:
    - https://thedfirreport.com/2022/02/07/qbot-likes-to-move-it-move-it/
    - https://redcanary.com/threat-detection-report/threats/qbot/
    - https://thedfirreport.com/2022/10/31/follina-exploit-leads-to-domain-compromise/
author: frack113
date: 2022-02-13
modified: 2024-03-05
tags:
    - attack.collection
    - attack.t1005
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\esentutl.exe'
        - OriginalFileName: 'esentutl.exe'
    selection_flag:
        CommandLine|contains|windash: '-r'
    selection_webcache:
        CommandLine|contains: '\Windows\WebCache'
    condition: all of selection*
falsepositives:
    - Legitimate use
level: medium