Security :: The Server Was Hacked From So Called Tor IP Address?
Nov 14, 2010
I always use professional services to secure my servers. Everything was fine for years but a week ago my server got hacked.I don't know how the hacker got my username/password - it was not something like admin, password.9 months ago my PC was infected with some virus which connected to the FTP server by using password which was saved in CuteFTP and infected all index files with some javascript. Then I changed the user/FTP password and didn't save it anymore in Cute FTP. Of course, I checked all the folders and re-uploaded all infected files. Is it possible that this virus uploaded some hidden file which was able to get the new password for this account?
The server was hacked from so called Tor IP address. I am tiref of worrying about server security and now have an idea to get a static IP address from my ISP and to allow logins only from this IP address. What do you think about it? This idea looks good for me but are there any risks to lose access to the server. Can ISP provider change the static IP address for some reason?
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Apr 11, 2011
Awoke to millions of failed SSH attempts into my public server. Behind a firewall which forwards only SSH and HTTP. Local iptables deny everything except SSH and HTTP. Exact same symptoms and results as Chris over at his site: here.I just want to know how they managed to execute a script, or make changes etc? Here's some info:According to cat /var/log/secure | grep "Accepted" no one besides myself gained entry via SSH.The FTP account (500:48 (Purposely in apache group)) is chrooted to a 775 directory and vsftpd does not accept anonymous entry. vsftpd and xferlog's are empty?
Code:
You have new mail in /var/spool/mail/root
[root@dev etc]# tail /var/spool/mail/root
[code]....
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Jun 19, 2010
My server (Ubuntu 10.04 desktop) was hacked. I had my ethernet plugged in to an Intel 82557 Ethernet Pro card (Pulse) when my server was first attacked. After it was attacked I reinstalled the system but my ethernet card still would not work. Ubuntu recognized it, but it is continually disconnected and the little status lights on the card do not light up anymore.
So then I plugged the ethernet to the mother board itself. Well, my server was hacked again and now the ethernet on the motherboard does not work. Again, Ubuntu (after a reinstall) recognizes the hardware but nothing happens when I plug the etherent in. The motherboard is a BioStar P4M900 VIA chipset. I have a few of the system logs here [URL] which I saved right after the first attack.
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Jun 13, 2011
I just got control over a server that was hacked several months back. The other day we started receiving rejected emails sent from my server to a yahoo email address that is no longer active that contained users login information. I am trying to find the process that is sending these emails. So far its been like finding a needle in a haystack. The email that is being sent is appending the login information each time it is sent so there must be a local file that contains this information. I have tried using grep and find without any luck.
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Oct 8, 2010
How to secure a Terminal Server. so that it can't be hacked by bruteforce/divtionary tools ?
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Jan 3, 2011
My server is probaly hacked and sending spam emails. I see them randomly in maillog (/usr/local/psa/var/log/maillog, server has a plesk panel), sometimes a few in a long time, sometimes a lot of them.Here is a sample of it:
Jan 4 00:47:08 acv360 qmail-remote-handlers[17662]: Handlers Filter before-remote for qmail started ...
Jan 4 00:47:08 acv360 qmail-remote-handlers[17662]: from=root@acv360.com
[code].....
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Jun 22, 2010
I have a server hacked when i try to log in i type root but won't let me type a passwdthere are no services up, can't see page mail nothing
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Mar 8, 2010
I want to know if any one hacked or getting into my computer. I am using lucidlynx right now, My computer directly connected to modem, not using any wireless router. How can i check if some one hacked? How to prevent it?
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Jan 3, 2011
I have a 6yo laptop...z60m. Solid little thing that I knocked around so much the hinge broke. My dad jerryrigged it so it can stay open.
So now I use it as a glorified DVD player. Then, around February the hard drive died. I put it in fresh, loaded a couple of regular games and the DVD modifications to play DVD's. So, besides the basic upgrade to 9.1 not much as been done.
Well, last week my panel disappeared. I procrastinated and last night I got on the computer. I did F2 and "xfce-panel" and my panel reappeared exactly how I'd last tweaked it.
With on exception. This blue globe, "Akonadi" had mysteriously appeared.
Thing is that I haven't installed or updated anything for 8 months...why? becuase I haven't had this thing connected to the Internet. The wireless tower has been on. (my bad) but all of the signigals in my neck of the wood are encripted so I just let it be.
I don't know where this program came from. Is it loaded in xubuntu? Why would it show up? And furthermore if there was someone with malicious intent (unfortunatly I do have to take that into consideration) have put this on for data collection?
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Feb 27, 2011
I have windows computer and it is being hacked.About month ago or more some one hacked my router and install new firmware from Firmware Version: Talisman/Basic V1.2.9a
My router is linksys and SSID got changed to sveasoft.I had WPA set up and MAC filtering .
Some one hacked my router and change Firmware Version.And user name and password also got change to just admin.
Well now I got a pop up from my Kaspersky saying network attack scan.generic.TCP 74.63.245.168
only thing I can find on it http://whatismyipaddress.com/ip/74.63.245.168
It is Limestone Networks in Dallas.
Some strang things have been happing to my computer in past 4 months and is getting worse.
I have no firewall or router now.And have not gone to the store and get new router yet and I'm thinking of formatting my computer and putting linux and get good firewall like zone-alarm.
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Feb 19, 2011
I had a serious breach of the cellular segment of my communications network this week. All I can say is nobody got hurt. The attackers also knew where to find me via email. I'm concerned that perhaps they've penetrated this aspect of my system as well, although they seemed pretty specifically focused on the phone. There have been no changes on anything on my computer, and of course, I went ahead and changed all the passwords. How can I verify or at least look into the possibility of having been hacked as well.
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Mar 22, 2011
my computer has been surely hacked for at least more than two months; my private information are being hacked and spread around! I initally used Windows Vista and I had the firewall off and no antivirus software. When I realized that my OS had been hacked, I began turning my firewall on and installing security softwares, but nothing stopped the hack.
Yesterday, I erased all my partitions and installed Ubuntu 10.10. I installed rkhunter and a firewall. I changed my static IP adress, at least for the sake of knowledge, to another one, then I got disconnected since my router only allows my old IP.
When I'm about to write my admin password, I disconnect from the network. I've scanned my system using rkhunter, and the result is a list of 30 suspicious files!
Can I adjust my router in a way that it can allow any IP adress? If yes, can I have a non-static IP adress? How to prevent the hacking in the first place? However, I believe, I don't know yet, that my Ubuntu has also been hacked...
If I can't get rid of the hacker(s), then I should permanently disconnect from internet and find another way to receive information anonymously through the internet.
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Jul 3, 2009
I have LAN with 20 machines. I see that one of them is infected. Its sending a lot of packets to the internet. My internet connection at this momment is realy slow. What should I do? How to detect which machine is infected? I'm using hardware firewall. Fortigate... Its hard to configure there nice logs. Any good software. I don't want to switch off network cable from each machine and check.
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Nov 18, 2010
A scan on my computer reported as up many local ips which simply does not exist in my network. This host is supposed to have ip 192.168.0.4, but all other ip should not be there. I have a USB modem connected to a Linux box, connected itselfs to a wifi linksys router and thats it.
# nmap -sP '192.168.*.*' | grep -v down
Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2010-11-18 21:46 CET
Host 192.168.0.4 appears to be up.
Host 192.168.7.27 appears to be up.
Host 192.168.10.0 appears to be up.
[Code]...
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Apr 13, 2010
I need to know whether Ubuntu can be hacked when it is installed as a dual boot with W7 by hacking windows and getting access to the Ubuntu partition?
What I would also like to know if this way can be used to put a key logger or screen capture in Ubuntu which installs next time Ubuntu is started?
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Apr 28, 2010
I believe it is a keylogger because my Facebook account has been hacked, I believe my email has as well. I heard that even if you reformat a harddrive, the virus could still sit there and apparently that is what happened to me. how to be rid of it and keep my security. I installed RKhunter and Chkrootkit. Rkhunter reports warning files while checking my filesystem. I can post a log if need be.
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Apr 9, 2010
I've discovered that after restoring my site's backup this has happened to me again. How to delete the hacked /home/crocbits directory so that I can restore the backup under the same username. When I try to delete /home/crocbits I get this message when logged in as root:
[Code]...
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Apr 26, 2011
I just got an email from google saying my site contained malware. It has a line in it: "<script src='http://whitepix.info/3'></script>". I've noticed its recursively in all my .html and .txt files in my website. Can I make a linux script to run that will go through all my .html and txt files recursively and delete that line from them? I don't know how it got in all of them.
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May 8, 2010
I would like to COMPLETELY block a specific IP address using iptables. I found this one:
Code:
iptables -A INPUT -p tcp -s xxx.xxx.xxx.xxx -j REJECT --reject-with tcp-reset
Will this work? How do I undo the changes later?
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Aug 26, 2009
I want to block some ip address that are attacking my server and making my ssh port busy. On searching the google, I found
Code:
iptables -A INPUT -s ip_address -j DROP
I will add this rule in iptables. My questions are:
1) do I have to do
Code:
chkconfig iptables on
so that it load the iptables at boot. I am wondering why do I need this because iptables is already modified and it loads the iptables at boot time if firewall is enabled.
2) When we add the above rule, which file is modified? Another way, where are this rules stored? It is not in /etc/sysconfig/iptables and /etc/sysconfig/iptables_config.
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Apr 7, 2011
my server is web server with centos 5 & parallel 9, don't why all web sites in this server have been added a home pages which is not mind. even the mysql admin also redirected to other site, what i can do!
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Feb 26, 2010
Is it possible to restrict root logons to the SSH server to just a single ip address (or maybe a range?) I have other users connecting to the server daily so restricting ALL access to a single ip i cannot do. I need root enabled (for my own reasons) but want to lock it down a bit more.
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May 25, 2011
Let me start by saying its a school assignment, and therefore not a real world situation. Nevertheless, I would appreciate any help I can get.The company ProvidIT has contacted us, their website has been hacked. Instead of their normal website, it shows Buy creditcard details online, click here (cc4u.jpg). A classical defacement.The following offenses also might have been committed. So its our job to find evidence for those offences.(I had to translate the Dutch law articles, so they might not be 100% acurate legally speaking, but you get the idea)
- Unlawfully accessing automated systems
- Copy or tap (eavesdrop) data after hacking
- Unlawfully access or use system resources of a 3rd party computer
[code]....
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Sep 14, 2009
Im an academic (university networks and security lecturer) studying/teaching network and operating system security, and inspired by the work of Hovav Shacham set about testing ASLR on linux. Principley I did this by performing a brute force buffer overflow attack on Fedora 10 and Ubuntu 9. I did this by writting a little concurrent server daemon which accidently on purpose didnt do bounds checking.
I then wrote a client to send it a malicious string brute forcing guessed addresses which caused a return-to-libc to the function usleep with a parameter of 16m causing a delay of 16 seconds as laid out in [URL] Once I hit the delay I new I had found the function and could calculate delta_mmap allowing me to create a standard chained ret-to-libc attack. All of that works fine. However .... To complete my understanding I am trying establish where I can find the standard base address for ubuntu 9 (and other distros) for the following, taken from Shacham:-
Quote:
[code]....
/proc/uid/maps gives me some information but not the base address ldd also gives me the randomised starting address for sections in the user address space but neither gives me the base address. Intrestingly ... when a run ldd with aslr on for over (about) 100 times and checked the start point of libc I determined that the last 3 (least significant) hex digits were always 0's and the fist 4 (most significant) where between 0xB7D7 and 0xB7F9. To me this indicated that bits 22-31 were fixed and bits 12-21 were randomized with bits 11-0 fixed. Although even that doesnt define the boundaries observed correctly.
Note: I am replicating the attack to provide signatures to detect it using IDS, and for teaching purposes. I am NOT a hacker and if needed to could reply from my .ac.uk email address as verification.
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Apr 14, 2010
ssh-Ebymts4547 it is also listening to a port on my machine and it is owned by my regular, non-root, user account. Is it malware of some sort?
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Jul 13, 2011
I feel there's a bit of a misunderstanding going on between C++ and me...My problem is that I have a deque of pointers to a class, and create objects then add them to the deque in a for loop. However, the destructor is called on the object as soon as the loop quits.
Code:
This prints:
Code:
Now, if I change the deque from deque<Test*> to deque<Test> then it works fine - I get:
Code:
However, I can't do this with my actual code, because I am creating a deque of pointers to an abstract class, so it won't let me instantiate the class. (This is all so that I can take advantage of polymorphism, and call functions on a set of similar objects without worrying what type of object I'm dealing with).
So, I suppose my question is: what is the correct way to create that deque of pointers to the abstract class? I don't seem to be barking up the right tree currently.
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Jan 2, 2010
This is a transcript I get emailed at least once every day, usually about 3 to 10 a day recently.
Transcript of session follows.
SMTP server: errors from unknown[ip address]
<boring stuff snipped>
In: RCPT TO: <server@my domain>
Out: 550 5.1.1 <server@my domain>: Recipient address rejected: User unknown in local recipient table
Session aborted, reason: lost connection Now I cannot seem to find anything via Google, as when I put "server@" anywhere in the string, I just get web hosting or other kroomst. The emails usually come from legit places, usually hotels. Does this mean they are sending bad emails, i.e. they have a Trojan/worm, or is this a live hack attempt?. I believe the later, as I might get upto 3 domains from the one ip address, which is always, NOT associated with the listed domain. Not causing me any issues, except I have been getting a lot recently.
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Feb 28, 2011
When posting results from ifconfig, it shows the hardware address of etho, etc. Would you consider that to be a security risk ?
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Nov 17, 2010
I get the following message in /var/log/secure: Nov 15 09:27:21 su: Deprecated pam_stack module called from service "su-l"
I have done some research and it seems I need to get rid of pam_stack.so in /etc/pam.d/su but I can't find out what to use in its place.
Below is a copy of my /etc/pam.d/su file:
Code:
From what I understand, I need to replace the line "auth required pam_stack.so service=system-auth" with "auth include system-auth"
My problem is how do I then go about limiting access to su based on group membership without pam_stack.so?
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Sep 4, 2009
I hv Cent OS 5.3 installed as server. I hv a network of approx 100 desktops and laptops. For a security purpose i want to block certain laptops from gaining a the network access using dhcp. Can we block the ip address leasing if a specific MAC address request for a ip lease?
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