|W32/Sdbot-OO is an IRC backdoor that can spread via network shares protected by weak passwords.
The worm copies itself to the file sysmgr.exe and cool.exe in the Windows System folder and adds the following registry entries:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft System Checkup
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\NT Logging Service
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\Microsoft System Checkup
W32/Sdbot-OO connects to an IRC server specified by the author and joins a channel from which it will receive further commands.
These commands can start any of the following actions:
- HTTP server
- sock4 proxy server
- UDP, SYN or PING flooding
- TCP redirection
- download files
- execute arbitrary commands
- spread via weakly-protected network shares
It may also attempt to terminate the security related processes.
Use antivirus (also check How To Remove section)Startup Optimizer to remove it from startup.