How to remove virus and trojan
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Well I never planned to get technical on my very first hub. I heard about hubpages from one of my friends and decided to have an account of my own and write about anything that might be interesting and might help other people. Recently I had to sweat a lot to get rid of a Trojan on my laptop; pop came the idea to write about how I managed to get rid of it.
I don't know how but recently I got my system infected with a Trojan. On every startup the my antivirus used to start scanning and every now and then warning popup used to come on my screen which was very annoying. I used following process to get rid of this problem. I think using this process one can get rid of almost all virus and Trojan but I do not guarantee it as I have tested it only for this Trojan (win32 gen{other}) that effected my system.
Here are the steps that I performed but before that I disabled my antivirus and firewall. I did not had to do this but if any P2P file-sharing program is installed then it should be removed (yea I know it sounds like a big headache :( ).
1. Download cleaning programs
First of all I downloaded a file from a link http://www.ctrlaltdel.dk/Fix_download.exe. Yes, I too thought that this file itself could be infectious but don't worry it is harmless. Executing this file (double clicking) will download four cleaning programs namely CCleaner.exe, MalwarebytesAM.exe, ComboFix.exe and HijackThis.exe.
2. Run CCleaner.exe
Double click CCleaner.exe and let the program install. During the install Uncheck "Add CCleaner Yahoo! Toolbar" as it is not required. Running the CCleaner will remove temporary internet files, saved passwords on browser, browser history, cookies etc but the user will have the option to pick and choose.
3. Run MalwarebytesAM.exe
Double click MalwarebytesAM.exe to install the program. At the end, be sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish. If an update is found, it will download and install the latest version.
Once the program has loaded, select Perform full scan, then click Scan. When the scan is complete, click OK, then Show Results to view the results. The result shows a list of infections, be sure that everything is checked, and click Remove Selected. If Malwarebytes needs to restart the computer during the cleansing, let it do so.
At the end a log file will be generated, save it, we will require it later. At the end of this most of the infections will be cleared and one may skip further steps but if the problem persists then one should go ahead with the steps mentioned below.
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Norton Antivirus 2008 3 User [OLD VERSION]
Price: $9.75
List Price: $59.99 |
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The Art of Computer Virus Research and Defense
Price: $30.63
List Price: $54.99 |
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The Limit (feat. Viro The Virus) [Explicit]
Price: $0.99
|
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Virus - Neoprene Barrel Blocker
Price: $3.89
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4. Run ComboFix.exe
Double click ComboFix.exe and follow the instrictions. If the programs request to update, let it do so. Please note, that once you start combofix you should not click anywhere on the combofix window as it can cause the program to stall. In fact, when combofix is running, do not touch your computer at all and just take a break as it may take a while for it to complete.
When finished, it will produce a log file located at C:\combofix.txt. we will require it later.
5. Run HijackThis.exe
Double click HijackThis.exe and it will run a quick install. (If you are a Vista user, you need to right-click HijackThis.exe and select "Run as Administrator"). Once the program is installed a window will open - click the top button: "Do a system scan and save a logfile". Shortly after Notepad will open a log that you need to save as we will need it later.
6. Confirm system clean up
Using the different programs 3 log files are produced - one from Malwarebytes, one from ComboFix and one from HijackThis. Goto the following forum http://www.bullguard.com/forum/10/(Bullguard forum) register there, create a topic/thread, describe your problem (try to give as much details as possible) and copy the contents of these 3 logs into your topic/thread there. Experts there will analyse your problem and as per the log produced, will confirm whether the problem has actually been fix. If they feel that problem persists then they will assist further.
I have mentioned about this forum because I found it good but if someone knows about any other such forum where such service is provided then one can go ahead with that. Choice of this forum depends completely on an individual. Furthermore, if someone feels confident that the problem is solved and does not need any advice from any such forum then this step can be avoided but I would recommend going ahead with this step too.
I hope this will help some of the readers around. Some of the readers may feel this kind of article should have been posted in some tech forums but tech forum will have mostly technical people accessing it while here, the article will be read by a wider section of people.
Liked this article? Don't forget to rate it "Thumbs Up" and give your comments below !
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|
Norton Antivirus 2010 1-User/3PC
Price: $25.99
List Price: $59.99 |
|
Kaspersky Anti-Virus 2010 3-User
Price: $14.99
List Price: $59.95 |
|
Norton Antivirus 2009 [OLD VERSION]
Price: $17.90
List Price: $39.99 |
|
Norton Antivirus 2010 1-User
Price: $14.89
List Price: $39.99 |
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Comments
I guess its better to use a software then go for manual cleaning as one may miss something to be removed from the registry and more over using the software is good in the sence that it do not require any knowledge of working with registry.
I have no idea about this method working on other OS as I have tried it only on windows (vista).
Hey nice work man... Atleat it worked for my Windows XP.
Great to know my article is helping people around. Thanks for your comment
I downloaded ctrialtdel.dk/fix and all that came thru was ccleaner. how do I get the other three?
Thanks for trying al park; I too tried to download the softwares again after I read you comment and I was able to download all softwares. Don't know why is it not working for you. May be while downloading you have to disable your firewall or any anti virus that you have installed. Did you disable or uninstal any P2P file-sharing program that you maybe having on your system. Maybe these things are creating problem. Please try again. This is the only way to download those softwares. Hope it works for you.
But if it still does not then try these links for the remaining three downloads;
For MalwarebytesAM : malwarebytes.org/mbam.php
For ComboFix : myantispyware.com/2007/10/08/combofix-another-free-anti-spyware-tool/
For HackThis : download.com/Trend-Micro-HijackThis/3000-8022_4-10227353.html
I would suggest you to try the link in the hub above before trying to download on your own using the links I have given you.
this was good can you publish more tuts and guide like this helps me save a lot of time :)
Well thanks Adrainsean. Sure I will come with some more hubs like this....... lets hope I get into some more new problems soon so that I can write about it ;)
Great. Let me try few of the links you provided here.
Thanks guidebaba for droping by. Sure try them and let me know if had any problem. Would be glad to help you!
Quick question what if i have Norton on ym computer, but it keeps telling me i need to remove the Trojan Manually.. can anyone help with that?
Thanks for stopping by celi, I never used Norton so maybe I will not be able to say why Norton says that but what I can suggest you is to either uninstall Norton or disable it and try the method I have suggested. Hope it works!
Very useful hub!
the malware thing does not work. its lacking a certain program.
I don't why it is not working for you but for me it is. Have you disabled/removed any anti-virus or firewalls and disabled/removed P2P file-sharing if any, because it may not work with these present in the system. Just give a try. I am sure it will work
It's worth noticing that out of 4 selected tools Malwarebyte's is the only being commercial. Somehow in the battle with malware freeware tools start beating established leaders of the PC security market ;)
well i always the free ones the commericial ones are too heavy and bound to get upgrades enter activation key and so on forth restriction not to mention how high they consume resources when the freewares and open source one do the same much efficiently
The free ones are free because generally they are worthless. Sometimes they are worse than worthless because install more spyware or they make your computer into a bot on a botnet.
nicomp -->> You are correct to a certain extent but it is not always true. For me it worked and so I thought to share the knowledge.
hello.. My laptop is running really slow recently. I have scanned for viruses, and I also did scan the registry using online scanners and it resulted to a lot of registry problems. Aside from purchasing the scanner and fix it, is there any other way to solve this problem? please help...
Simple things apart registry clean up that we can do are, defragmentation and removing the temporary files. Of course you should check for virus too.
Thanks for share. great information. I try to follow your guide when my computer had infected by viruses. great hub. two thumbs up for you.
Ya sure and do get in touch with me if have any question related to the matter!

















adrainsean says:
13 months ago
Is there any different software which works better than registry cleaner or this setup is more better than manual setup??.....
does is manual trouble shooting work in other os too like linux or Mac X ??