DHCP Callout DLL Installation

calendar Apr 28, 2026 · attack.privilege-escalation attack.persistence attack.execution attack.stealth attack.defense-impairment attack.t1574.001 attack.t1112  ·
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Detects the installation of a Callout DLL via CalloutDlls and CalloutEnabled parameter in Registry, which can be used to execute code in context of the DHCP server (restart required)

Sigma rule (View on GitHub)

 1title: DHCP Callout DLL Installation
 2id: 9d3436ef-9476-4c43-acca-90ce06bdf33a
 3status: test
 4description: Detects the installation of a Callout DLL via CalloutDlls and CalloutEnabled parameter in Registry, which can be used to execute code in context of the DHCP server (restart required)
 5references:
 6    - https://blog.3or.de/mimilib-dhcp-server-callout-dll-injection.html
 7    - https://technet.microsoft.com/en-us/library/cc726884(v=ws.10).aspx
 8    - https://msdn.microsoft.com/de-de/library/windows/desktop/aa363389(v=vs.85).aspx
 9author: Dimitrios Slamaris
10date: 2017-05-15
11modified: 2023-08-17
12tags:
13    - attack.privilege-escalation
14    - attack.persistence
15    - attack.execution
16    - attack.stealth
17    - attack.defense-impairment
18    - attack.t1574.001
19    - attack.t1112
20logsource:
21    category: registry_set
22    product: windows
23detection:
24    selection:
25        TargetObject|endswith:
26            - '\Services\DHCPServer\Parameters\CalloutDlls'
27            - '\Services\DHCPServer\Parameters\CalloutEnabled'
28    condition: selection
29falsepositives:
30    - Unknown
31level: high

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