Archive A Reconstructed © MegaSecurity Database

• a
• b
• c
• d
• e
• f
• g
• h
• i
• j
• k
• l
• m
• n
• o
• p
• q
• r
• s
• t
• u
• v
• w
• x
• y
• z
• other

Server:
dropped files:
c:\WINDOWS\msn32.exe            Size: 66,048 bytes 
c:\WINDOWS\OutlookExpress.exe   Size: 37,376 bytes 
c:\WINDOWS\taskmgr.exe          Size: 78,848 bytes 
c:\WINDOWS\winup32.exe          Size: 64,512 bytes 
c:\WINDOWS\winusers.exe         Size: 27,648 bytes 
c:\WINDOWS\winvid.exe           Size: 41,984 bytes 
c:\WINDOWS\ziplog.txt           Size: 5,615 bytes 
c:\WINDOWS\data\csrss.exe       Size: 74,240 bytes 
c:\WINDOWS\data\services.exe    Size: 117,248 bytes 

added to registry:
HKEY_LOCAL_MACHINE\SOFTWARE\YahooMessenger

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "YahooMessenger"
data: C:\WINDOWS\data\csrss.exe 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "YahooMessenger32"
data: C:\WINDOWS\data\services.exe 



tested on Windows XP
March 29, 2007

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.