I have been asked by many to see the logs. I have also posted them to the website at http://www.criminalsmostly.com/~mandreko/logs.zip (didn't want to post a really really long post) It appears I didn't word my questions as well as I'd hoped. I knew pretty much what was inside it, other than the hk.exe. I was mainly wondering if this was some automated "rootkit" or if some little script kiddie was sitting there using exploits they found on securityfocus, and then running these apps on my client's server. I appreciate all the responses I'm getting, I'm finding out more that I did not know about this little file. I'm mainly trying to figure out how it got there, and where it came from. This little kit is quite intriguing. -- Matt Andreko -----Original Message----- From: Matt Andreko [mailto:mandrekoat_private] Sent: Wednesday, July 10, 2002 4:58 PM To: incidentsat_private Subject: Can anyone identify this backdoor? Apparently over the holiday, one of my client's machines was broken into. It was running Windows 2000 Pro, with IIS installed (webserver only, no ftp,smtp..) Apparently the attacker got in through this. The logs show some Unicode in the requests, so I'd bet that's it. A file was deposited in the c:\winnt\system32\ folder named "cc.exe". I have studied it a little bit, and it seems quite interesting. It's actually a winrar self-executable file. Inside contains what I believe a stripped down copy of serv-u ftp server, messages for that server, and some other interesting tools. There's a cmd.exe file, which doesn't match the size of the one in c:\winnt\system32, so it could be backdoored. I was basically wondering if anyone had seen anything like it, or could identify it. I have put a copy up temporarily on my webserver at http://www.criminalsmostly.com/~mandreko/cc.zip ------------------------------------------------------------------------ ---- This list is provided by the SecurityFocus ARIS analyzer service. For more information on this free incident handling, management and tracking system please see: http://aris.securityfocus.com ---------------------------------------------------------------------------- This list is provided by the SecurityFocus ARIS analyzer service. For more information on this free incident handling, management and tracking system please see: http://aris.securityfocus.com
This archive was generated by hypermail 2b30 : Thu Jul 11 2002 - 13:14:07 PDT