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incidents-help_at_securityfocus.com
Date: Mon Jul 22 2002 - 14:47:34 CDT

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    Hi! This is the ezmlm program. I'm managing the
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    I'm working for my owner, who can be reached
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    Messages to you from the incidents mailing list seem to
    have been bouncing. I've attached a copy of the first bounce
    message I received.

    If this message bounces too, I will send you a probe. If the probe bounces,
    I will remove your address from the incidents mailing list,
    without further notice.

    I've kept a list of which messages from the incidents mailing list have
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    Copies of these messages may be in the archive.

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    Here are the message numbers:

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    --- Enclosed is a copy of the bounce message I received.

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    From: "Matt Andreko" <mandrekoori.net>
    To: <incidentssecurityfocus.com>
    Subject: Can anyone identify this backdoor?
    Date: Wed, 10 Jul 2002 16:58:06 -0500
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    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

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