RE: Suspicious joe.exe

["Petruzel, Oliver" <OliverP () aegisresearch com>]

Well, the kaiten.c DDoS comes to mind.  it's an updated knight.c DoS that
someone has simply renamed to joe when they compiled it...or maybe they
added to it.

basically, from what i know of it (which is admittedly very little since ive
never seen it near me) is that you've been zombie-fied.  for IRC DDoS.  I
also dont know the "cleaning" process offhand, but im sure symantec or
someone has one since the source for kaiten.c is readily available
everywhere. (packetstorm)

do me a favor, plz analyze it with everything you can get your hands on.
just to make sure "joe" didnt add to kaiten.  I would check your logs and
start from there... shouldnt be too hard since the box is 2 weeks old,
right?  If you need help analyzing the logs, ill help any way i can.  we all
will :)

but you've most certainly been compromised = my guess.

1. is it a production box? internet facing? web server?  what is it?...

-oliver p.


> -----Original Message-----
> From: Reb [mailto:reb () viametrix com]
> Sent: Thursday, August 02, 2001 1:22 AM
> To: VULN-DEV List
> Subject: Suspicious joe.exe
>
>
> Greetings all,
>
> While troubleshooting a problem with Win2k server doing a 
> hard lock ( no
> response to keyboard/mouse) I happened upon the Run key
> (SOFTWARE\Microsoft\Windows\CurrentVersion\Run\) and noticed 
> that joe.exe
> was being started.  Being that this box was no more than 2 
> weeks old I found
> this highly odd since it wasn't being loaded as a service and 
> whatnot.  So
> I'm done dealing with the 2k server hang for a bit and I 
> start looking at
> this file. After I've googled and bugtraq'd my way around I can't find
> anything that mentions such a Trojan/virus. It seems to be 
> some type of irc
> client that connects to 205.188.253.230 and joins #penr0x, 
> which is +I.  If
> asked I can gzip/zip up the file and send it to someone.  If 
> anyone has any
> insight to this I'd love to hear from you. Here's a bit of 
> information on
> the exe.
>
> [reb@ reb]$ ls -al joe.exe
> -rw-r--r--   1 reb      reb         53248 Aug  1 17:58 joe.exe
> [reb@ reb]$ md5sum joe.exe
> 488c80ba0b2186a1ba52c4e69c590bc6  joe.exe
>
> Some of the more useful strings from `strings joe.exe` are:
>
> Microsoft Visual C++ Runtime Library
> Runtime Error!
> Program:
> <program name unknown>
> SunMonTueWedThuFriSat
> JanFebMarAprMayJunJulAugSepOctNovDec
> GetLastActivePopup
> GetActiveWindow
> MessageBoxA
> NICK
> VERSION
> KILL
> HELP
> PRIVMSG
> PING
> NOTICE %s :DNS <host>
> NOTICE %s :Resolving %s...
> NOTICE %s :Unable to resolve.
> NOTICE %s :Resolved to %s.
> NOTICE %s :GET <host> <save as>
> NOTICE %s :Unable to create socket.
> http://
> NOTICE %s :Unable to resolve address.
> NOTICE %s :Unable to connect to http.
> GET /%s HTTP/1.0
> Connection: Keep-Alive
> User-Agent: Mozilla/4.75 [en] (X11; U; Linux 2.2.16-3 i686)
> Host: %s:80
> Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, 
> image/png, */*
> Accept-Encoding: gzip
> Accept-Language: en
> Accept-Charset: iso-8859-1,*,utf-8
> NOTICE %s :Receiving file.
> NOTICE %s :Saved as %s
> NOTICE %s :Voyager Alpha Force: Age of Kaiten
> NOTICE %s :NICK <nick>
> NOTICE %s :Nick cannot be larger than 9 characters.
> NICK %s
> NOTICE %s :UDP <target> <secs>
> NOTICE %s :GET <http address> <save as> = Downloads a file off the
> web and saves it onto the hd
> NOTICE %s :NICK <nick> = Changes the nick of the knight
> NOTICE %s :DNS <host> = DNSs a host
> NOTICE %s :IRC <command> = Sends this command to the server
> NOTICE %s :KILL = Kills the knight
> NOTICE %s :VERSION = Requests version of knight
> NOTICE %s :HELP = Displays this
> IRC
> SYSTEM
> HIDE
> SHOW
> MODE %s -xi
> JOIN %s :
> WHO %s
> PONG %s
> SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
> TaskReg
> #penr0x
> 205.188.253.230
> NICK %s
> USER %s localhost localhost :%s
> ERROR
>
>
> Reb