macchanger
- Keith Pachulski
- 2 days ago
- 3 min read

š§āāļø Introducing macchanger: Finally, a MAC Spoofing Tool That Works on Windows 11
Spoiler: Yes, we know the nameās been used before. No, we donāt care ā this one actually works on modern Windows.
š” Why We Built It
During recent physical security engagements, we kept running into the same problem: MAC spoofing tools that just don't work on Windows 11. Either they would:
Crash on startup,
Throw cryptic driver errors,
Or worse ā fail silently while we thought we were stealthy.
In the middle of a red team op, that's not just inconvenient ā it's unacceptable.
So we built our own: a dead-simple, zero-dependency MAC address changer for Windows 11Ā that works consistently on both Intel and Realtek NICs. Whether you're automating part of your op or trying to blend in on-site, macchangerĀ has your back.
šÆ What's macchanger?
macchangerĀ is a Python-based MAC address spoofing tool thatās purpose-built for physical security teams, red teamers, and stealthy operatorsĀ who need a reliable, Windows-native solution.
You can use it via GUI or CLI, automate it in scripts, and revert your MAC address cleanly when youāre done.
š§° Feature Rundown
ā Windows 11 CompatibleĀ (tested on 23H2 and up)
š Spoof or restoreĀ MAC addresses
š» GUI or CLI modeĀ ā your choice
ā” No dependenciesĀ ā built with Python standard library only
š§āāļø Minimalist by designĀ ā no drivers, no DLL hell
š§¹ OPSEC-awareĀ ā small, clean footprint
ā Why Not Use Existing Tools?
We tried. A lot of them.
But most existing tools are either:
Built for Linux and only half-ported to Windows,
Rely on outdated WinPcap/Npcap stacks that modern Windows 11 systems reject,
Or simply fail when handling adapter resets or specific chipsets.
We got tired of explaining to clients why our spoofing failed during a demo ā so we stopped relying on other peopleās tools.
š„ļø System Requirements
Windows 11
Python 3.6+
Administrator privileges
š How To Use
š§ CLI Mode
You like typing commands. We get it.
# List interfaces
python macchanger.py -l
# Change MAC address to a specific value
python macchanger.py -i "Wi-Fi" -m 00112233AABB
# Use random MAC
python macchanger.py -i "Wi-Fi" -r
# Interactive interface selector
python macchanger.py -I
# Show help
python macchanger.py -h
š±ļø GUI Mode
Just run the script without arguments:
python macchanger.py
You'll get a lightweight, native GUI to:
View available interfaces
Pick your target NIC
Enter a custom MAC or generate a random one
Apply changes and reset when done
š§Ŗ Tested Hardware
Windows 11 Pro (23H2+)
Intel onboard NICs
Realtek USB NICs
ā ļø Gotchas & Limitations
Requires Admin privileges (UAC prompt expected)
Interface resets briefly when changing MAC
Some USB Wi-Fi adapters donāt support spoofing (hardware-locked)
May require reboot to persist MAC changes on some systems
š Troubleshooting Tips
Run as Administrator!
Use -lĀ or -IĀ to ensure youāre selecting the correct adapter
Try a different MAC if one fails ā some drivers restrict vendor ranges
Reboot if the change doesn't appear to stick
š®āāļø Legal & Ethical Notice
This tool is intended for authorized security assessments only. Always obtain explicit permission before spoofing MAC addresses in a network environment.
If you're unsure whether you have legal clearance, you probably donāt ā ask first.
š¬ Contact & Support
Author: Keith Pachulski
Company: Red Cell Security, LLC
Email: keith@redcellsecurity.org
Website: redcellsecurity.org
Support: operations@redcellsecurity.org
If you find this tool useful in your red team ops, feel free to buy us a coffee or support future development.
š License
MIT License ā free to use, modify, distribute. Attribution appreciated but not required.
š§© Final Thoughts
Naming tools is hard. Making them work shouldn't be.
So hereās macchangerĀ ā no frills, no fancy marketing, just a solid, dependable MAC spoofing utility for Windows 11. If it saves you five minutes during an engagement, itās done its job.
Happy hacking ā ethically.
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