Saw this on another forum, I clicked it knowing full well what it was. Luckily, I'm smart enough to NOT use Internet Explorer, and to have a decent anti-virus app. (Nod32) I was unaffected, and there are reports that Nod was one of the few scanners that actually found it.
Btw, the file is called cd.exe. It's a trojan for DDoS drones, pretty nasty.
SDBOT worms are known to drop a copy of itself in the Windows system folder and modifies the registry to enable the worm to execute at every Windows startup.
The worm propagates via network shares. Some of the SDBOT worms create a helper batch file to do this process, while some directly does this by creating a CMD.EXE shell process.
Some variants of this malware have backdoor capabilities which allow a malicious user to do the following actions:
List processes
Terminate a process
Flood a target host
Connect to a particular IRC server
Download a file from the Internet
Visit a particular URL
Uninstall the malware
Retrieve the system information such as CPU speed and memory size
Download an updated copy of itself
Execute denial of service (DoS) attack
It usually runs on Windows NT, 2000, and XP.
Just anothe reason to NOT use IE, and to have a good anti-virus application. (NOT Norton or McAffee!)