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Backdoor.Agobot.gy, W32.Randex.gen, BKDR_SDBOT.GEN

Win32 worm

W32/RBot-A is a worm with a backdoor component that spreads on weakly protected network shares on the Windows platform. The worm spreads by scanning random IP addresses for open SMB ports (445) and trying to copy itself to the Windows system folder on the remote Admin$ and C$ shares as the file wuamgrd.exe.
W32/RBot-A uses an internal dictionary of common passwords to gain access. The worm attempts to schedule the copied file for later execution on the remote machine.

W32/RBot-A also has a backdoor component that allows a malicious user remote access to an infected computer. When run the worm attempts to contact a remote IRC server and join a specific channel to listen for commands.

More: http://www.sophos.com/virusinfo/analyses/w32rbota.html

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