hi guys, i am one of the new members of this forum and i really like it cause i can share my knowledge with you and i also learn some new tricks.
anyway, i've been reading this threat and is interesting; however, i decided i wanna share some other tricks to defeat viruses, spyware and trojans.
all your tips are very good but sometimes anti-viruses and other programs can get the job done completely, i know this, for i got infected with a program that totally hijacked my computer at work and it did a mess with my computer, eventually i tried to use my anti-spyware (windows defender, ad-aware etc) but none of these tools helped me at all. if you have similar problems to the ones i just described then don't get crazy. try to get as much information as you can from those programs, such as the name of the virus etc, (the most important part to me). and if the location of the files.
this information is really important, for you can get more information from there. so how can you get rid of those programs with that information and a few other tricks. well the first thing i would do is to try to get as much info as i can (like i said) then try to deny your system to access those files. sometimes you can't delete the files that belong to the virus because the system itself is using them. you can try to kill explorer.exe and then try to delete the files from the command prompt, but if you can't then use a program called "UNLOCKER" that program is great to unlock filed that are bing use in your system, after you unlock those files you will be probably be able to delete them without any problems.
if you can't do that then like i said try to deny your system to access those files, so how can you do this, well this is gonna work in windows xp pro and 2003, it is not gonna work in home edition unless you use the command prompt.
to deny access to fiules just go to the the folder options then go to view and uncheck the box that says"use simple file sharing"
that is gonna create a new tab in the properties of all the files in your computer, the tab name is "security" if you know about that is not a big deal but it is off by default in windows. now right click omn the files that belong to the virus or trojan and go to properties and click on the security tab. there you can deny access tyo any user account to that files (not recommended if you are trying to use that for security against other admin users, for they can override that security, for they have admin rights) anyway, there just uncheck the box that allow your system to access those files and check the one that says "deny";likewise, only let checked the box that allow your username to acccess that files.
after you do that with all the files that belong to the virus, just reboot your computer. after that your computer will not be able to access those files because you just denied access to them, then just go to the location of those files and delete them manually. this is a great trick that has worked for me 100%, i figured it out how to do this, when i got infected by a piece of spyware that no antyspyware could delete.
after you do this then, run your antivirus or antispyware to delete the mini files that are not working anymore because you don't have the main files that were infecting your computer, now your antivirus should not have any problems deleting the rest of the files such as registry keys and things like those.
2) another tip i would suggest is to use bootable operating systems such as knoppix or your own bootable cd such as the one that you can create with "pebuilder". PEBUILDER is a great program to create your own windows bootable cds, as you might already know there are many portable antiviruses and antispyware, so you can use them from your bootable cd and delete all the viruses that are in your computer, this will work pretty good because your system is not gonna be using the files, for you are using your system to run your bootable operating system not the one installed in your hard drive. Likewise, you can delete the files manually once you know where they are and the name of them. if you decide to built your windows bootable cd with pebuilder, look for the hundreds and hunderds of plugins for your cd, there are plugins even to create admin accounts in your operating system that is install in your computer, this is great when you can't remember your administrator password or when you wanna bet the password of other accounts in the computer by getting the hashes from your new admin account and cracking them.
another tool you can use is one of those "hiren's versions" that are out there, this is basically the same as having a bootable cd, but the only difference is that "hiren" has the antiviruses included within it, and some other great tools such as poartition magic and some other recovery programs.
another great tool that i love is a progrtam called "sandboxie" http://www.sandboxie.com/
this program is great because it creates a buffer in your computer in which you can run programs, when you run the program in that buffer created by sandboxie, the program is not able to infect, damage or affect your computer. so for instance if you think you might be getting viruses from your internet explorer, you can run internet explorer or mozilla from sandboxie,so that all the coockies, viruses, activex programs, or any other program that think you get from the net throught your browser will be totally delete it when you close sandproxy, all those viruses will go directly to the buffer, so they will never touch your any files in your hard drive. those viruses or program will not have any power on your computer because they are not written in your hard driove, but in the buffer. it is also great to test programs such as viruses and programs that you think are trojans etc.
also try to check what ports are open in your computer, for it can help you to see if you have a backdoor open in your computer, this is not gonna guaranty you don't have a trojan, for they can hide themselves sometimes; however, it will help you to find the ones that are not hiding from you. it is also good to take a snapshot of the processes running in your computer, just open your taskbar and maximize the windows then take a snapshot and save it, then if you see that something is going on wwith your computer then just check that pic that you had of your processes running in your computer and compare the ones that are in the pic with the ones that are running now in your computer, that might help you to see what processes might be affecrting your computer.
if you have a virus that is not letting you use your task manager then don't use the windows task manager, i recomment you use the ones from systernals http://www.microsoft.com/technet/sysint ... lorer.mspx
it is a great program that will give you much more info about all the processes running in your computer, it will also show you a bar that tells you what processes has been using more cpu cycles in your computer. it can also hijack your windows taskbar, so that every times you press ctrl alt delete, it will appear instead of the windows taskmanager.
try to use a good firewall, do not use the one that comes from windows, i also recomment you don't use zonealarm firewall because you will get problems to connect to the internet from times to time. you will have to set many thing to the firewall to work properly in your computer, i recomment you use the comodo firewall http://www.personalfirewall.comodo.com/
it is a great firewall, and creating the rules for it is very easy and does not take a lot of time.
i recommend you block icmp traffic in your computer, with the comodo firewall you can block icmp traffic coming to your computer not the one sleaving from your computer. i say this because i read on the new that new trojans are able to be activated by icmp traffic, which is a protocol not very observed by many firewalls.
if you are really afraid of viruses and trojans, then try to use a user account in your computer, not the admin account. i know this is a pain in the @## but if you want to have admin rights in your computer then just use the "ruin as" command that is given to you when you right click on a program when using a user account, if you don't like that then create a shortcut to command prommt, then open it by using the "run as" command and leave it open while you use your computer, then just type in the your cmd shell the name of the programs you wanna use with admin rights in your computer and command prompt will open them with admin rights without asking you everytime for the password and username.
i also recomment you never use internet explorer, usefirefox with the plugin to block scripts, that is good because you will not have to worry much about java scripts and activex programs running in your computer without you knowing about them.
if i remember more things i will post them, i am sorry if my post is taking so much space, sorry about that.
i hope i was helpful and that my tips can help you at least a little bit to get rid of viruses or spyware in your computer.
cya