Archive A Reconstructed © MegaSecurity Database

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Client:
port: 1036 TCP



Server:
dropped file:
c:\WINDOWS\system32\msvrhost32.exe
size: 1,755 bytes 

startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{2A202488-F02D-11cf-64CD-1123AFEECF20} "StubPath"
data: C:\WINDOWS\System32\msvrhost32.exe



tested on Windows XP
May 21, 2005

spirit is a reverse connection mini-uploader assembled with nasm.

@@ ActiveX Startup Method
@@ Only one registry key added
@@ Only one file dropped in the windows system directory
@@ Only one port and one socket for everything
@@ Injects into explorer.exe
@@ Bypasses hooking firewalls(like Tiny)
@@ Low memory usage
@@ <1.8kb unpacked



!! Cannot be packed AFAIK(It will crash if you pack it)
!! Hexing the server has a 95% chance of breaking the code

?? Double-click to upload and run a file
?? Download feature isn't implemented yet

iciko

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.