Well, the first thing it does is copy itself onto your computer. You may notice the following things:
Presence of <system folder>/botzor.exe
Presence of value: WINDOWS SYSTEM
with data: botzor.exe
in the following registry keys:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
Excessive network traffic over port 445
It then uses your E-mail to spread. It can cause an extreme slow-down of your computer, especially as it functions. Microsoft considers the threat "Moderate" as it does no real damage to your system, meaning it doesn't delete any files like a true virus. But, it clogs your network and even reboots the computer from time to time. It infected computers at companies such as CNN, The Associated Press, The New York Times and Caterpillar Inc. From what I hear, Computer techs swore at their computers for hours before solving it.
The link I provided has a way to protect your computer as well as delete the worm if it does exist.
