[NTLUG:Discuss] root can not edit hosts.deny file

Richard Strittmatter richard at mesh.net
Tue Jun 17 13:52:49 CDT 2003


Also check in the /dev directory.

A LOT of rootkits will put data directories there. Newer ones
are also using /usr/share

> -----Original Message-----
> From: discuss-bounces at ntlug.org 
> [mailto:discuss-bounces at ntlug.org] On Behalf Of Bug Hunter
> Sent: Tuesday, June 17, 2003 1:31 PM
> To: NTLUG Discussion List
> Subject: Re: [NTLUG:Discuss] root can not edit hosts.deny file
> 
> 
> 
>   what is important here is to use another "ls" to do the 
> looking with.  
> Try copying the ls from another machine, or using the "files" 
> command, as 
> that one is often overlooked.
> 
>   Your "ls" will be "fixed" to prevent it from showing root 
> kit stuff, if 
> your box is compromised.
> 
>   Sometimes, something like busybox, which has its own built 
> in commands 
> can be used to look around with.
> 
>   You might want to boot with knoppix and mount your hard 
> drive and then 
> look around on it.  The ls on knoppix will not be flawed.
> 
> bug
> 
> 
> On Tue, 17 Jun 2003, Kenneth Loafman wrote:
> 
> > m m wrote:
> > > Hi All:
> > > 
> > > Thanks for the tip.
> > > I have checked all files ind /var, /etc directories, the 
> > > /etc/hosts.deny
> > > is the only file was set to i.
> > > what is the possibility that the box has been "rooted"?
> > > 
> > > what are the other files that the hacker like to modify/changes?
> > 
> > Look primarily in the executables directories:
> > 
> > /bin/*
> > /lib/*
> > /sbin/*
> > /usr/bin/*
> > /usr/lib/*
> > /usr/sbin/*
> > /usr/local/bin/*
> > /usr/local/lib/*
> > /usr/local/sbin/*
> > 
> > in particular:
> > 
> > ls
> > ps
> > find
> > top
> > gtop
> > 
> > or, any file that shows process state (to keep the task hidden) or, 
> > any file that shows filesystem state (to keep the files hidden)
> > 
> > Some crackers have the tools to modify the RPM database so a 
> > comparison
> > between what they installed and what the database shows is 
> the same.  I 
> > don't know about DEB.
> > 
> > ...Ken
> > 
> > 
> > 
> 
> 
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> 




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