In the Windows security model, SID ending in -500 is reserved for the built-in Administrator account. The SID seen in the image:
S-1-5-21-343818398-789336058-1343024091-500 → maps to user Joe
This proves that Joe is the true built-in administrator account on the domain EARTH.
From CEH v13 Courseware:
Module 4: Enumeration
Topic: SID Enumeration and Account Discovery
CEH v13 Study Guide states:
“In Windows, the account with RID 500 is always the default Administrator account. Even if renamed, its SID remains ending in -500. Enumeration of this SID allows attackers to identify privileged accounts.”
Incorrect Options:
A: Incomplete — it is not just that Joe has SID 500, but that SID 500 means Joe is the administrator.
B/C: These commands don’t validate Guest account status.
E: Incorrect — these commands explicitly prove administrator identity.
[Reference:CEH v13 Study Guide – Module 4: Windows Enumeration → RID 500 IdentifierMicrosoft Documentation: Well-Known SIDs, ======, , ]
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