Ubuntu Security :: Windows Virus Appears In Home Folder?
Jan 4, 2011
Lately, I've found 2-3 times an .exe file with a random name in my /home, and another data file with a random name as well. I'm a user of wine, but none of the programs that I use seems to be the cause. Last time it happened I sent it to virustotal.com, and this is the result: [URL].. So, this is clearly a virus. The two files show "nobody" in the proprietary field and "none" as group. What can I do to track down the cause? Also, telepathy-butterfly likes to hog 100% of CPU lately, and all I can do is killing it: is someone exploiting a vulnerability? if so, why the hell would he drop a win32 virus?
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Jun 29, 2010
My home folders contents like download , documents ....
ae displayed in desktop too
and i can't hide them
and if i delete one of them the original one will be deleted
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Sep 24, 2010
My machine that is running Windows XP got a virus a few months ago. Keep in mind I have NEVER used Internet Explorer.
Symptoms when CONNECTED to the internet: My volume is turned down on start-up. When the volume is on the internet explorer "clicking" noise plays frequently. In task manager there are two "iexplore.exe" processes running. As soon as I kill them they will start up again. They aren't taking up copious amounts of memory, but they are still very present. If left on for long enough pop-ups will start appearing.
Symptoms when NOT CONNECTED to the internet: None.
What I've done: I've ran a handful of the free Anti-Virus programs, e.g., AVG, ComboFix, avast!, and Malwarebytes' Anti-Malware.
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May 12, 2010
I'm dual booting 10.04 with windows 7 and it occurs to me that I could scan the windows partition for viruses FROM linux. Is anybody doing this sort of thing? Does that make any sense?
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Jun 6, 2010
Since Wine recognize the .exe filetype and associates itself with it, is it possible to get a virus that starts up automatically in wine or is it limited to me manually running the program?
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Feb 28, 2011
I believe the name of the virus is "PC Defender 2010". This has self-installed, causing popups attempting to convince the user that there is a security flaw, and that they should upgrade to the advanced version. I have looked this up, and it is definitely a virus. The virus creates a shortcut with a target in the AppData folder named defender.exe. When I went to search for this file, after having set it to show hidden files and folder, I looked in the folder, and found nothing by the name of defender.exe. Does anyone have any ideas as to how to find this file, if it even exists, and then remove the virus all together from the computer. Ideally these solutions will be executable from Windows, as the user is rather afraid of linux.
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Jan 31, 2010
I know that there is little need for me to install an anti-virus etc - but - I was thinking, it is a good idea to scan folders and files that I send to colleagues that run windows.Whats the best way and programme to do this? I guess I simply install an AV programme and thats it!
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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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Feb 4, 2010
Let's say I have an avi file that contains a virus for ntfs windows xp sp3. I put that file on a linux ext3 partition. Then on a windows xp sp3 nfts computer, I connect to the partition over a network share via smb. I run the file within the share so the file is never physically on the windows xp sp3 computer. In this situation will the virus infect the windows xp ntfs partition?
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Feb 28, 2011
I tried to ask this question in the other thread but the admin was saying to me that my other thread here [URL]..( it was not very much the subject of the thread ) People that use Unix,Mac OSX or any Linux OS all none windows do you need anti-virus program like Norton or Kaspersky? And same with firewall like ZoneAlarm and Comodo ?
Some people say you do not need a anti-virus program like Norton or Kaspersky or any firewall.Other people say you do and some say that Unix and Mac OSX have built in firewall.
And if on uses windows use ZoneAlarm or Comodo has it does alot more than windows firewall and router firewall. Note the admin saying the other thread was why windows get more malware and not very much the subject of the thread to post there.
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Mar 30, 2011
I have been told that some virus scanners for linux (including but not limited to AVG, Antivira, clamAV, others) are available to ubuntu. My question is which of these still CURRENTLY support detection of WINDOWS viruses in addition to linux viruses. I would like to boot the Ubuntu live jump drive I have to scan windows machines and at least detect viruses, dont really need to repair. who knows which virus scanners compatible with ubuntu that will detect windows viruses as well
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Jun 13, 2011
I know that Linux has no viruses out in cyberland that affect it but would it be possible for a Micrcrap virus to wiggle through an Ubuntu partition and find its way into the Windows portion of the same hard drive on a dual boot system when the windows portion is not being used?
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Dec 22, 2010
Would a Windows virus executed in Wine compromise the whole Linux system?
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Mar 21, 2010
iam using it parallel with windows, whenever i open ubuntu many times i saw a folder in a drives, named system volume information. Is that a virus folder? should i delete it whenever i open ubuntu or not
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May 11, 2010
I'm using lucid desktop edition, and I need to encrypt my home folder, but I didn't mark that option in the fresh instalation of lucid. I'd like the login screen to ask for the password and then decrypt my files.Is it possible to do without erasing my user?
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Jul 15, 2010
I have a dual boot computer. The WindowsXP "side" has been infected with a rootkit virus. So far UBUNTU has not been affected to my knowledge. I have not yet removed the virus from the WindowsXP "side". I am thinking of deleting the NTFS partition and have the computer fully dedicated to UBUNTU. Now for my question. Is there a possibility that the virus resides in the MBR and that I need to "rebuild" the MBR to actually remove the virus?
Even more extreme, should I totally re-install UBUNTU in the name of safety and precaution.
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Feb 11, 2010
I have just installed Ubuntu Jaunty (I do not like Karmic, please don't try to make me upgrade) and after installing all my programs I realized I did not encrypt my home directory.
I know it's very simple to do this during the installation but I can't seem to find an option to do it after it.
Is there a way to do this?
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Mar 9, 2010
I just installed 9.10 on my laptop and selected the option for home folder encryption. I am running DropBox and placed the DropBox folder on my desktop (meaning it should be encrypted when I am logged out.) So I have two questions:
1) Shouldn't this setup cause my DropBox files on the server to be encrypted? Apparently they are not because they appear as unencrypted text using the DropBox Web interface.
2) If they were encrypted on the server (which doesn't appear to be the case right now), how would it be possible to share them with another client unless the encryption on both clients were set up identically?
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May 3, 2010
When I installed, I selected the option to encrypt my home folder. I believe this is causing constant crashes now, since error message is user id/password related. Is there a way to remove the encryption?
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Jul 19, 2010
Let's begin from the top. I have a relatively new laptop that I've been running Ubuntu on (along with a little-used Windows boot). Picked it up in November or so, installed the current "latest" version of Ubuntu at the time (9.10). I have been doing incremental upgrades, and it's been progressively breaking down more and more. Yes, this includes 10.04.
After GRUB stopped working, I decided it was time to try a reinstall from the top. I told it to leave all the other operating systems alone and do a full reinstall.
Fortunately, I had managed to stuff most of my current work in duplicate locations during this whole debacle, somehow. Don't ask me how I managed to do that when GRUB wasn't working. However, when I installed, I conscientiously said "Oh, yes, Ubuntu, encrypt my home folder! I love privacy!" As a result, about... 30 gigabytes of useful (but ultimately re-downloadable) material is rather inaccessible at the moment. When I try to boot the old system using the newly fixed GRUB, it goes into kernel panic. This seems like a no-go.
I have a saved hojillion-character long passphrase for decryption from my install back in November. Conscientiously saved in the case of just such an emergency.
I read this how-to and followed it to the letter as far as I could tell, trying to mount with ecrytfs to recover my data.
[USERNAME] here is a proxy for my actual username. Yes, the location of my old home folder may seem a little bizarre.
Code:
sudo mount -t ecryptfs /media/c82ca9fe-2b15-4aca-a98d-6482b1d80a32/home/[USERNAME]/ /home/[USERNAME]/oldhome
Passphrase:
Select cipher:
1) aes: blocksize = 16; min keysize = 16; max keysize = 32 (not loaded)
[Code].....
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Mar 9, 2011
I need to do a reinstall (read the details here): http://ubuntuforums.org/showthread.php?t=1703381 but I need to be able to access my home directory which is encrypted. Is there a way to decrypt my home folder, so that I don't get into trouble accessing it later on?
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Mar 19, 2010
How to secure the Home folder. I forgot what the script was?
Something like chmod 0700 $HOME. Is that right? I'm just not sure.
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Mar 20, 2010
When installing the latest Distro of Mint (I believe this is not much different, if at all, from Ubuntu as far as this goes) I chose to have my Home folder encrypted using the login password. This was a function of the installation. What I was wondering about was how secure this was and if I should maybe use something to do a better encryption or not.
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Apr 11, 2010
What are the steps I must take to move my existing home folder to a separate, encrypted partition? Can I create this partition without damaging my current partition? Where is a trusted location to download App Armor profiles? What else can I do to harden the security of Ubuntu?
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Jun 29, 2010
last week I decided to not just run dist-upgrade, but give the Lynx a completely fresh install. Before that I've only copied my home folder to an external hard-drive.
Now that I'm on Ubuntu 10.04 I have no clue how to import my old personal key and the passwords from the backup (my old home folder).
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Mar 18, 2011
I would like to give a few students a preconfigured Ubuntu USB stick with certain apps. I also encrypted the home folder in case of loss.
With TrueCrypt, cloning an encrypted container would be a big no-no because any one could just backup their header with a known pw and use it to decrypt anyone else's container due to each container using the same master key. I assumes the same applies to home folder encryption, yes?
Is there a way, other than creating a new user with home folder encryption, of forcing a master key change?
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Aug 16, 2011
while since I've been here. I'm having an issue with a fresh install of 11.04. Due to work requirements, I encrypted my home folder, which is fine, however, it seems to randomly lock itself down while I'm working, and it's getting really annoying.
Apps stop working, I can't open nautilus (something about not being able to create certain folders because home is locked), hell, even the terminal link on my desktop says failed to launch application (though the launcher on the top panel works). I just have to run ecryptfs-mount-private and enter my password to fix it, but it's doing this every 15 minutes or so. what might cause it to relock itself so frequently? I would expect to not have to deal with mounting my private data, that should happen at login and be good until log out.
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Mar 21, 2010
Is there a way for my home folder to not be automatically mounted when i log in? And for that matter a way to change the password from my log in password to something else?
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May 17, 2010
If I wanted to transfer a home folder that was encrypted to another ubuntu computer could I? If I had a separate home partition that was encrypted, but I wanted to upgrade ubuntu to the latest version by doing a clean install is there an easy way so that I can still read the data encrypted with the old version?
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Jul 1, 2010
I was wondering how to activate encryption on my home folder, like sugested when creating the first user? in 10.04Also, is it any good to use?It's a work computer with sometimes private documents (cv, docs, etc) and i would like to be sure no one can access it, even as root.
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