title: DNS Server Error Failed Loading the ServerLevelPluginDLL
id: cbe51394-cd93-4473-b555-edf0144952d9
related:
    - id: e61e8a88-59a9-451c-874e-70fcc9740d67
      type: derived
    - id: f63b56ee-3f79-4b8a-97fb-5c48007e8573
      type: derived
status: test
description: Detects a DNS server error in which a specified plugin DLL (in registry) could not be loaded
references:
    - https://medium.com/@esnesenon/feature-not-bug-dnsadmin-to-dc-compromise-in-one-line-a0f779b8dc83
    - https://technet.microsoft.com/en-us/library/cc735829(v=ws.10).aspx
    - https://twitter.com/gentilkiwi/status/861641945944391680
author: Florian Roth (Nextron Systems)
date: 2017-05-08
modified: 2023-02-05
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.execution
    - attack.stealth
    - attack.t1574.001
logsource:
    product: windows
    service: dns-server
detection:
    selection:
        EventID:
            - 150
            - 770
            - 771
    condition: selection
falsepositives:
    - Unknown
level: high

title: DNS Server Discovery Via LDAP Query
id: a21bcd7e-38ec-49ad-b69a-9ea17e69509e
status: test
description: Detects DNS server discovery via LDAP query requests from uncommon applications
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/980f3f83fd81f37c1ca9c02dccfd1c3d9f9d0841/atomics/T1016/T1016.md#atomic-test-9---dns-server-discovery-using-nslookup
    - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/7fcdce70-5205-44d6-9c3a-260e616a2f04
author: frack113
date: 2022-08-20
modified: 2023-09-18
tags:
    - attack.discovery
    - attack.t1482
logsource:
    product: windows
    category: dns_query
detection:
    selection:
        QueryName|startswith: '_ldap.'
    filter_main_generic:
        Image|contains:
            - ':\Program Files\'
            - ':\Program Files (x86)\'
            - ':\Windows\'
    filter_main_defender:
        Image|contains: ':\ProgramData\Microsoft\Windows Defender\Platform\'
        Image|endswith: '\MsMpEng.exe'
    filter_main_unknown:
        Image: '<unknown process>'
    filter_optional_azure:
        Image|startswith: 'C:\WindowsAzure\GuestAgent'
    filter_main_null:
        Image: null
    filter_optional_browsers:
        # Note: This list is for browsers installed in the user context. To avoid basic evasions based on image name. Best to baseline this list with the browsers you use internally and add their full paths.
        Image|endswith:
            - '\chrome.exe'
            - '\firefox.exe'
            - '\opera.exe'
    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
    - Likely
# Note: Incrase the level once a baseline is established
level: low