Archive A Reconstructed © MegaSecurity Database

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Server:
size: 28 KB

startup:
none

What is AckCmd? 

AckCmd is a client/server combination for Windows 2000 that lets you open
a remote Command Prompt to another system (running the server part of AckCmd).
It communicates using only TCP ACK segments.
This way the client component is able to directly contact the
server component through a firewall in some cases

How do I use this tool? 

Download the zip file and extract the client component (ackcmdc.exe)
and the server component (ackcmds.exe).
The server component has to be executed on the target system.
Then run the client component with the target IP supplied as an argument.
Now you have a remote Command Prompt. 

Which OS's are supported? 

Windows 2000. 

WARNING! 

Running the AckCmd server part will create a backdoor into your computer!

This archive is an almost-complete reconstruction of the legendary Mega Security (also known as Kobayashi), a premier 90s-era "Trojan Database" where malware authors once showcased their work. After a decade offline, the site was brought back in August 2024 by its original creator, MasterRat, who authorized the Malware Gallery to host this modernized, searchable version of the collection. While the original site remains available for those seeking a nostalgic, old-school experience, we are proud to continue its legacy here. Full credit and thanks go to MasterRat and the retired Mega Security staff for their years of dedicated work in cataloging these historical samples.