Detectionlowexperimental
DMSA Link Attributes Modified
Detects modification of dMSA link attributes (msDS-ManagedAccountPrecededByLink) via PowerShell scripts. This command line pattern could be an indicator an attempt to exploit the BadSuccessor privilege escalation vulnerability in Windows Server 2025.
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Launch
Swachchhanda Shrawan Poudel (Nextron Systems)Created Sat May 249b111d8e-92e0-4153-88bc-daefc1333abawindows
Log Source
WindowsPowerShell Script
ProductWindows← raw: windows
CategoryPowerShell Script← raw: ps_script
Detection Logic
Detection Logic1 selector
detection:
selection:
ScriptBlockText|contains|all:
- '.Put("msDS-ManagedAccountPrecededByLink'
- 'CN='
condition: selectionFalse Positives
Legitimate administrative tasks modifying these attributes.
References
MITRE ATT&CK
Related Rules
Similar
Rule not found6c9eb492-e477-4df9-b0f4-571fc9db29cd
Rule Metadata
Rule ID
9b111d8e-92e0-4153-88bc-daefc1333aba
Status
experimental
Level
low
Type
Detection
Created
Sat May 24
Path
rules/windows/powershell/powershell_script/posh_ps_modification_of_dmsa_link_attribute.yml
Raw Tags
attack.privilege-escalationattack.defense-evasionattack.persistenceattack.initial-accessattack.t1078.002attack.t1098