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System33r Downloader

Family Author(s) From Date Has Image
System33r Downloader 0.3 System33r September 2003
System33r Downloader 0.4 System33r September 2003
System33r Downloader 0.5 System33r September 2003
System33r Downloader 0.1 System33r September 2003
System33r Downloader 0.6 System33r October 2003
System33r Downloader 0.7 System33r October 2003
System33r Downloader 0.6 fixed System33r October 2003
System33r Downloader 0.7 (Private) System33r November 2003
System33r Tiny Webdownloader 0.1 System33r December 2003
System33r Tiny Webdownloader 0.2 DLL Injection System33r December 2003
System33r Tiny Webdownloader fwb 0.1 System33r December 2003
System33r Tiny Webdownloader 0.1 DLL Injection System33r December 2003
System33r Tiny Webdownloader fwb 0.2 fix k0nsl January 2004
System33r Downloader 0.7.2 System33r February 2004
System33r Downloader 0.7.3b (LITE) System33r March 2004
System33r Downloader 0.7.4b (LITE) System33r March 2004
System33r Downloader 0.7.4b2 (LITE) System33r March 2004
System33r Downloader 0.7.5.1 System33r March 2004
System33r Downloader 0.7.3b (CIA) System33r March 2004
System33r Multi Webdownloader 1.0 System33r (k0nsl) April 2004
System33r Multi Webdownloader 1.1 System33r (k0nsl) April 2004
System33r Multi Webdownloader 1.2 System33r (k0nsl) May 2004
System33r Multi Webdownloader 1.3 System33r (k0nsl) May 2004
System33r Multi Webdownloader 1.4 System33r (k0nsl) May 2004
System33r Multi Webdownloader 1.4.2 System33r (k0nsl) July 2004
System33r Multi Webdownloader 1.4.3 System33r (k0nsl) July 2004
System33r Multi Webdownloader 1.4.5 System33r (k0nsl) October 2004

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.