RE: backdoor

From: Rob Keown (Keownat_private)
Date: Sun Jun 23 2002 - 09:20:12 PDT

  • Next message: Hugo van der Kooij: "Re: backdoor"

    I would recommend a complete reinstall...you can boot from a clean image
    from a CD, mount the harddrive, get what you need off of the system, and
    then reinstall. 
    
    Search the archives at http://archives.neohapsis.com/ and you should see
    most people recommend this as the only safe alternative.
    
    > -----Original Message-----
    > From: Fabio Miranda [mailto:fmirandat_private]
    > Sent: Saturday, June 22, 2002 11:02 PM
    > To: incidentsat_private
    > Subject: backdoor
    > 
    > 
    > hi, My box was compromised, and i cant rm a binary
    > that listens over tcp, i need help support, watch:
    > 1. %nmap foo
    > ....
    > 898/tcp    open        unknown
    > 
    > 2. %nc foo 898
    > HTTP/1.0 400 Bad Request
    > Date: Sat, 22 Jun 2002 16:36:02 GMT
    > Server: Tomcat/2.1
    > Content-Type: text/html
    > <h1>Error: 400</h1>
    > No detailed message
    > 
    > 3. %netstat
    > ...
    > 30001303a88 stream-ord 3000108acd8 00000000
    > /tmp/smc898/cmdsock
    > 
    > 4. % /usr/local/bin/lsof -U
    > java    436 root   25u  unix 105,25      0t0 35169
    > /devices/pseudo/tl@0:ticots->
    > /tmp/smc898/cmdsock (0x30001303a88)
    > (Vnode=0x3000108acd8)
    > 
    > 5. %find / -inum 35169 -print  -exec ls -sal {} \;
    > /var/sadm/pkg/SUNWapdoc
    > total 34
    >    2 drwxr-xr-x   4 root     root         512 Mar 24 
    > 2001 .
    >   26 dr-xr-xr-x 680 root     sys        13312 Jun 22
    > 20:58 ..
    >    2 drwxr-xr-x   2 root     root         512 Mar 24 
    > 2001 install
    >    2 -rw-r--r--   1 root     root         932 Mar 24 
    > 2001 pkginfo
    >    2 drwxr-xr-x   2 root     root         512 Mar 24 
    > 2001 save
    > /devices/pseudo/tl@0:ticots
    >    0 crw-rw-rw-   1 root     sys      105,  0 Mar 24 
    > 2001 /devices/pseudo/tl@0:
    > ticots
    > 
    > 
    > Ok, What's happening?, I am very confused, the inode
    > number fsol show points to a direcroty and a character
    > device. How can i stop
    >  that listening binary?
    > 
    > 
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