HKTL - SharpSuccessor Privilege Escalation Tool Execution

Detects the execution of SharpSuccessor, a tool used to exploit the BadSuccessor attack for privilege escalation in WinServer 2025 Active Directory environments. Successful usage of this tool can let the attackers gain the domain admin privileges by exploiting the BadSuccessor vulnerability.

Sigma rule (View on GitHub)

 1title: HKTL - SharpSuccessor Privilege Escalation Tool Execution
 2id: 38a1ac5f-9c74-47d2-a345-dd6f5eb4e7c8
 3status: experimental
 4description: |
 5    Detects the execution of SharpSuccessor, a tool used to exploit the BadSuccessor attack for privilege escalation in WinServer 2025 Active Directory environments.
 6    Successful usage of this tool can let the attackers gain the domain admin privileges by exploiting the BadSuccessor vulnerability.    
 7references:
 8    - https://github.com/logangoins/SharpSuccessor
 9author: Swachchhanda Shrawan Poudel (Nextron Systems)
10date: 2025-06-06
11tags:
12    - attack.privilege-escalation
13    - attack.t1068
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection:
19        - Image|endswith: '\SharpSuccessor.exe'
20        - OriginalFileName: 'SharpSuccessor.exe'
21        - CommandLine|contains: 'SharpSuccessor'
22        - CommandLine|contains|all:
23              - ' add '
24              - ' /impersonate'
25              - ' /path'
26              - ' /account'
27              - ' /name'
28    condition: selection
29falsepositives:
30    - Unknown
31level: high

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