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::23 trojan:: This is a very dangerous trojan, at the time of testing it was not detected by any anti virus and anti trojan software. The server has some unique features such as guestbook cgi notification; the hacker can set up a web page and put a cgi guest book on his/her site, every time the victim comes online an entry will be made in this guest book, alerting the hacker that the victim is online. Another boasted feature is the ability to hide from process managers and viewers, it is assumed that the trojan uses VXD drivers for this, similar to the ring0 method.
Removal: Open up regedit (click start, go to run and type regedit, then hit ok) Follow this path HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\StillImage Right click on the StillImage key and choose delete.
Delete: c:\WINDOWS\SYSTEM\VMM32\Ebios32.vxd Size: 6,000 bytes, then reboot.
Finally, delete: c:\WINDOWS\Shedule.exe Size: 11,776 bytes
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