Archive A Reconstructed © MegaSecurity Database

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Server
Dropped Files:
c:\WINDOWS\system32\ntos.exe             Size: 413,696 bytes 
c:\WINDOWS\system32\wsnpoem\audio.dll    Size: 133 bytes 



Added to Registry:
HKEY_USERS\S-1-5-18\Software\Microsoft\Windows\CurrentVersion\Run "userinit"
Data: C:\WINDOWS\system32\ntos.exe 

HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run "userinit"
Data: C:\WINDOWS\system32\ntos.exe 
		
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "Userinit"
Old data: C:\WINDOWS\system32\userinit.exe, 
New data: C:\WINDOWS\system32\userinit.exe,C:\WINDOWS\system32\ntos.exe, 
	
	

Tested on Windows XP
August 03, 2008

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.