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Hell-Razor
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Joined: 10 Jun 2004
Posts: 458
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 Posted: Sat Dec 27, 2008 4:24 pm Post subject: I was.... hacked?... |
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this is quite strange. I have never heard of this before but I received a letter yesterday from my ISP saying that "your internet activity has been viewed in some form of illegal activity". With this letter I received about 30 pages worth of "ls" of random (or so it looks like) files on my machine. Now I am not saying I have not downloaded anything illegal but I honestly haven't in quite some time now (at least 6 months). I have noticed though some of the files are tar.gz and one of the files listed is in fact rkhunter which I installed about two weeks ago AND a .txt file that is in my /home/ dir containing all of my "wish-list" items for christmas. Now first off how the hell can they legally be viewing my files?
Second off who should I call and bitch at for this (if anybody)?... I have to head off to work now though Ill come back and maybe scan the letter I got on my scanner (that is if I can find the letter in the trash).
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Hell-Razor
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| Posted: Sat Dec 27, 2008 4:28 pm Post subject: |
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oh i forgot to add -- i think its time to ranish my hd's =(
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GODhack
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Joined: 26 Jan 2008
Posts: 389
Location: Lithuania
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| Posted: Sat Dec 27, 2008 6:14 pm Post subject: |
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Update everything if not updated, remove sshd from startup if you have it there.
Set iptables.
Check ps was for strange lines.
ISP can give you IP of hacker, you can whois his ip and find maybe even his phone number is he is stupid enough.
That is maybe all you can do.
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NeddySeagoon
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Joined: 05 Jul 2003
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Location: 56N 3W
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| Posted: Sat Dec 27, 2008 6:58 pm Post subject: |
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Hell-Razor,
Make an image of your drive for later forensics, then reinstall. Better yet, get another drive.
Do not attempt to salvage anything from the old install. It looks like you have been compromised somehow.
Check your access logs if you use ssh for external access.
Exactly what an intruder can do, depends on the account they have access as.
Are there any signs the intruder was root ?
e.g. does the list of files include things in /root ?
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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Hell-Razor
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Joined: 10 Jun 2004
Posts: 458
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| Posted: Sun Dec 28, 2008 6:06 am Post subject: |
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Alright I was unable to find the letter so I dont know if it was any root files (but cant or some / most of the root dir be seen by ls?)
Everything IS up to date hack. ssh is turned off i never really use it.
The strange thing is though that this is from my ISP, i am on the phone now for a different provider -- i dont know if i really can call and complaing because well i did/do illegal things with software except is there a line they crossed here?
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Hell-Razor
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| Posted: Sun Dec 28, 2008 6:08 am Post subject: |
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[00:03:33] Checking system startup files for malware [ Warning ]
[00:03:34] Warning: Found string 'hidef' in file '/etc/init.d/net.lo'. Possible rootkit: Possible part of Knark rootkit
that is a post from my rkhunter output -- anything to be worried about?
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platojones
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Joined: 23 Oct 2002
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| Posted: Sun Dec 28, 2008 6:18 am Post subject: |
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| Hell-Razor wrote: | [00:03:33] Checking system startup files for malware [ Warning ]
[00:03:34] Warning: Found string 'hidef' in file '/etc/init.d/net.lo'. Possible rootkit: Possible part of Knark rootkit
that is a post from my rkhunter output -- anything to be worried about? |
Yep...and I'm not even you. |
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platojones
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Joined: 23 Oct 2002
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| Posted: Sun Dec 28, 2008 6:38 am Post subject: |
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Sorry, I shouldn't have been so flip in my last comment...yes, your box is 100% owned. If you aren't taking NeddySeagoon's advice right now, you need to start. rkhunter is confirming what you already know by now. Unless you manually put 'hidef' in your net.lo file, then it doesn't get more explicit...
1) Somebody sent you an email containing a directory listing from YOUR own filesystem.
2) Only root can modify anything in /etc/init.d...and the word 'hidef' doesn't belong in net.lo unless you put it there yourself...if you don't remember doing that, then somebody else has root access to your computer.
So, follow Neddy's advise...at a bare minimum, you should have disconnected from the internet and started a reformat every drive on your box...followed by a re-install...and that goes for anything connected to this system. You have been seriously compromised. And don't re-connect to the internet until you have a reliable firewall installed. |
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Hell-Razor
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Joined: 10 Jun 2004
Posts: 458
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| Posted: Sun Dec 28, 2008 6:45 am Post subject: |
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| Code: | local hidefirstroute=false first=true
local routes="$(_get_array "routes_${IFVAR}")"
if [ "${IFACE}" = "lo" -o "${IFACE}" = "lo0" ]; then
if [ "${config_0}" != "null" ]; then
routes="127.0.0.0/8 via 127.0.0.1
${routes}"
hidefirstroute=true
fi
fi
local OIFS="${IFS}" SIFS=${IFS-y}
local IFS="$__IFS"
for cmd in ${routes}; do
unset IFS
if ${first}; then
first=false
einfo "Adding routes"
fi
eindent
ebegin ${cmd}
# Work out if we're a host or a net if not told
case ${cmd} in
-net" "*|-host" "*);;
*" "netmask" "*) cmd="-net ${cmd}";;
*.*.*.*/32*) cmd="-host ${cmd}";;
*.*.*.*/*|0.0.0.0|0.0.0.0" "*) cmd="-net ${cmd}";;
default|default" "*) cmd="-net ${cmd}";;
*) cmd="-host ${cmd}";;
esac
if ${hidefirstroute}; then
_add_route ${cmd} >/dev/null 2>&1
hidefirstroute=false |
and second it wasnt an email - it was a letter from my isp...
those are all the "hidef" items -- seems to be hide first route
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platojones
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| Posted: Sun Dec 28, 2008 6:47 am Post subject: |
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| Did you put those there? |
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Hell-Razor
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Joined: 10 Jun 2004
Posts: 458
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| Posted: Sun Dec 28, 2008 6:49 am Post subject: |
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nope
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Hell-Razor
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| Posted: Sun Dec 28, 2008 6:49 am Post subject: |
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anyway whats the program that turns all of the data on your hds to 0 then back to 1 and whatnot? i need it now...
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platojones
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Joined: 23 Oct 2002
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Location: Just over the horizon
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| Posted: Sun Dec 28, 2008 6:53 am Post subject: |
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| Quote: | | and second it wasnt an email - it was a letter from my isp... |
Well...let's back up here...first of all, even your ISP cannot get onto your machine, unless it is wide open. And I don't know of any TOS that allows and ISP to break into your computer, for any reason. Did that e-mail really contain a directory listing from your machine...or could it be something that you downloaded onto one of your ISPs servers? If it is the latter, then your first post was not clear about it at all...you made this post because you thought you were hacked...why do you think you were? |
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platojones
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| Posted: Sun Dec 28, 2008 6:59 am Post subject: |
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Ok, that answered the question
| Code: |
[xxxxxxx:/etc/init.d]# grep hidef *
[xxxxxxx:/etc/init.d]#
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that's what should have happened unless you put 'hidef' in your net.lo
The command you want to zero your disks is
[/code]
dd if=/dev/zero of=/dev/hard drive
[code]
for every hard drive....do that for the disk your root partition on last: |
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Hell-Razor
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| Posted: Sun Dec 28, 2008 7:00 am Post subject: |
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Cause I got an ls of some of the files that were both dled and on my machine, a letter saying stuff about illegal software -- as I know right now my router shows nothing and same with all the other suggestions. How could they get a partial ls of my /home/ files without fully being into my machine? whoever did it knew what they were doing and I think I need to spend the rest of the night working on reinstalling 
There is something like an ls but not quite the same I don't know how else to explain it... it has my name my ip my account number on it (basically everything except my full cc number and ss number)...There is also a download history of some but not all files - anywhere from what I think are kernel patches for a gentoo kernel to a random named tar.gz file (I have no idea what it is)...
Does that make sense?
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Hell-Razor
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| Posted: Sun Dec 28, 2008 7:04 am Post subject: |
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I know now though I need to go the hardened route and ontop of that start using tor for EVERYTHING...
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platojones
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| Posted: Sun Dec 28, 2008 7:11 am Post subject: |
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| Hell-Razor wrote: | Cause I got an ls of some of the files that were both dled and on my machine, a letter saying stuff about illegal software -- as I know right now my router shows nothing and same with all the other suggestions. How could they get a partial ls of my /home/ files without fully being into my machine? whoever did it knew what they were doing and I think I need to spend the rest of the night working on reinstalling
There is something like an ls but not quite the same I don't know how else to explain it... it has my name my ip my account number on it (basically everything except my full cc number and ss number)...There is also a download history of some but not all files - anywhere from what I think are kernel patches for a gentoo kernel to a random named tar.gz file (I have no idea what it is)...
Does that make sense? |
Ok...well...here's my advice. 1) Just disconnect from the internet ASAP. 2) Call your ISP first thing tomorrow and ask 'What's Up!'...if you can't trust your ISP, then your are screwed no matter what...and if there is an issue about some downloads...better to confront them with it rather than wait for an e-mail from their lawyers.
About the net.lo...well, big ALARM THERE! Personally, if rkhunter reported something like that on my system, I would a) disconnect from the network immediately 2) Do as Neddy says and make a backup of the root partition for later forensic analysis. 3) Zero out every drive on my system and re-install.
But that's just me...this whole situation is very odd...does anyone else in your house have physical access to your machine...or root access to it? If not, the hidef thing is a super-sized alarm bell for being an illegal break in. And...if this happened to me, as you describe it...out of the blue...I would assume a blackmail or extortion scam by a hacker.... |
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platojones
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Joined: 23 Oct 2002
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| Posted: Sun Dec 28, 2008 7:20 am Post subject: |
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| Oh...and to be fair...I'll just go ahead and ask this...this is a relatively up-to-date Gentoo system, no? It's not like some 5 year old Gentoo install that has never beein updated? This isn't some other distro, or hybrid that was hacked together, right? The reason I'm asking is that the net.lo you posted looks nothing like a current Gentoo net.lo...so if you are running Gentoo, then it has definitely been seriously altered...or way out of date. |
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platojones
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| Posted: Sun Dec 28, 2008 7:30 am Post subject: |
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| Also, hopefully you aren't reading this now and have already started the remedial actions described...I wasn't pointing the finger at you, by any means..If your box was taken over (and it looks like it was), then the hacker is the one who has been the cause of all of this...he may be downloading and forwarding warez all over the world, using your box as an open relay for spam, etc, etc, and your ISP noticed it and sent you that letter...in fact, that makes perfect sense. So yes, wipe your system and call and explain what happened to your ISP....and document that call...also, try and remember anything sensitive you may have on your system...have you used it for credit card transactions for online purchases, etc...if so, your browser has probably cached all of that information...and any passwords, credit cards numbers, etc, you may have used for anything on the internet may be comprimised. |
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lookitsme
n00b
Joined: 06 Nov 2003
Posts: 48
Location: Kuala Lumpur, Malaysia
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| Posted: Sun Dec 28, 2008 8:38 am Post subject: |
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| Quote: | | The reason I'm asking is that the net.lo you posted looks nothing like a current Gentoo net.lo...so if you are running Gentoo, then it has definitely been seriously altered...or way out of date. |
It looks the same as on my box... its provided by openrc-0.4.1. |
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mv
Watchman
Joined: 20 Apr 2005
Posts: 6780
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| Posted: Sun Dec 28, 2008 10:05 am Post subject: |
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| lookitsme wrote: | | It looks the same as on my box... its provided by openrc-0.4.1. |
Yes, indeed: The posted passage is in openrc-0.4.1.tar.bz2 in the file init.d/net.lo.in. So it is completely normal and nothing to worry about. Just a false positive of rkhunter. However, you might want to open a new ticket on the openrc development page to inform Roy that his code triggers this problem: I am rather sure that he does not know yet. |
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Hell-Razor
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Joined: 10 Jun 2004
Posts: 458
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| Posted: Sun Dec 28, 2008 7:08 pm Post subject: |
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well im on a new system (hooray) and yes it seems lookitsme is correct...i did use layman again and made a backup file of my net.lo this time to see if anything funky went on -- it was me i guess but oh well too late now.
I would like to thank everybody that helped -- It wasnt what I wanted to hear but hell it was something that had to be done.
For security measures -- iptables was recommended (going to install it now and take out my wifi router), and what about a proxy? Ive always liked tor and used my machine for a forward in the past -- how hard is it for my **NEW** isp (yes they came about 20 minutes ago to install  ) to read my traffic if i torify all my somewhat sensitive data?
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quag7
Apprentice
Joined: 12 Aug 2002
Posts: 288
Location: Marana, Arizona - USA
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| Posted: Sun Dec 28, 2008 7:56 pm Post subject: |
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The problem with tor is it isn't supposed to be used for p2p traffic, and even if you did use it that way, it would be painfully slow, like sub-dialup slow. Tor is a good idea but there needs to be more relays and more responsible usage. I always groan whenever I have to turn it on.
Using a seedbox or cheap shell account is not a bad alternative.
But what this has to do with where the ducks go in the winter, I do not know
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kernelOfTruth
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Joined: 20 Dec 2005
Posts: 6111
Location: Vienna, Austria; Germany; hello world :)
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54847
Location: 56N 3W
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| Posted: Mon Dec 29, 2008 5:32 pm Post subject: |
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Perhaps its worth tempering the paranoia by making it clear that security is like the layers of an onion.
They have to break each layer in turn.
The idea is to make it clear to an attacker that there are easier targets out there and they should try one of those instead.
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Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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