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My First Malware Infection - Back Door Trojan?


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#1 Tora

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Posted 11 February 2007 - 03:07 AM

I've managed to contract my first virus. I'm not at all computer minded but I hate the thought that I'm leaving my computer vunerable for hackers and worse.

I have a pop up that tells me "Your computer is infected with a back door trojan virus that allows the remote attacker to perfom various malicious actions. Click this baloon to download malware removal software"

My home page has also been change to a protected page which is trying to sell me software to get rid of the virus.

I have downloaded McAfee security which doesn't seem to be doing much.

From what I can gather from this helpful site, I can see that I need to try and detect the virus from my programs and remove it, I'm not even sure where I start to actually do this.

Can anyone help or advise me??

Moderator Edit: Moved topic to more appropriate forum. ~ Animal

Edited by Animal, 11 February 2007 - 03:10 AM.


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#2 fozzie

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Posted 11 February 2007 - 07:23 AM

IMPORTANT NOTE: Backdoor Trojans are very dangerous because they provide a means of accessing a computer system that bypasses security mechanisms. Remote attackers use backdoor Trojans as part of an exploit to to gain unauthorized access to a computer and take control of it without your knowledge. If your computer was used for online banking or has credit card information on it, all passwords should be changed immediately to include those used for email, eBay and forums. You should consider all your passwords to be compromised. They should be changed by using a different computer and not the infected one. Do not change passwords or do any transactions while using the infected computer because an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breech.

First try this

Download and scan with SUPERAntiSypware Free for Home Users

* Double-click SUPERAntiSypware.exe and use the default settings for installation.
* An icon will be created on your desktop. Double-click that icon to launch the program.
* If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Udates". (If you encounter any problems while downloading the updates, manually download and unzip them from here.)
* When done, select "Scan for Harmful Software".
* There are three scanning options. Choose "Perform Complete Scan" and click "Next".
* When done, a Scan Summary will appear with potentially harmful items that were detected. Click "OK".
* Make sure they all have a checkmark next to them and click "Next".
* A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
* Click Preferences and then click the statistics/logs tab.
* Click the dated log and press View log. A text file will appear so you can see the results.
* Select close to exit the program.
* Scan in SAFE MODE

After that, download DrWeb-CureIt & save it to your desktop. DO NOT perform a scan yet.

Reboot your computer in SAFE MODE using the F8 method.

Scan with DrWeb-CureIt as follows:

* Double-click on drweb-cureit.exe to start the program. An "Express Scan of your PC" notice will appear.
* Under "Start the Express Scan Now", Click "OK" to start. This is a short scan that will scan the files currently running in memory and when something is found, click the Yes button when it asks you if you want to cure it.
* Once the short scan has finished, Click Options > Change settings
* Choose the "Scan tab" and UNcheck "Heuristic analysis"
* Back at the main window, click "Select drives" (a red dot will show which drives have been chosen)
* Then click the "Start/Stop Scanning" button (green arrow on the right) and the scan will start.
* When done, a message will be displayed at the bottom advising if any viruses were found.
* Click "Yes to all" if it asks if you want to cure/move the file.
* When the scan has finished, look if you can see the icon next to the files found. If so, click it, then click the next icon right below and select "Move incurable".
(This will move it to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if it can't be cured)
* Next, in the Dr.Web CureIt menu on top, click file and choose save report list.
* Save the DrWeb.csv report to your desktop.
* Exit Dr.Web Cureit when done.
* Important! Reboot your computer because it could be possible that files in use will be moved/deleted during reboot.

If that does not work
please read and follow all instructions in the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log". You may have performed some of these steps already. About half way down are instructions for downloading HijackThis and creating a log.

When you have done that, post a log in the HijackThis Logs and Analysis Forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. Please include the top portion of the HijackThis log that lists version information. An expert will analyze your log and reply with instructions advising you what to fix.

Please be patient. It may take a while to get a response because the HJT Team members are very busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT make another reply until it has been responded to by a member of the HJT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another HJT Team member is already assisting you and not open the thread to respond.

If after 5 days you still have received no response, then post a link to your HJT log here.

After posting a log you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc.) unless advised by a HJT Team member. Doing so can result in system changes which may not show it the log you already posted. Further, any modifications you make may cause confusion for the member assisting you and could complicate the malware removal process which would extend the time it takes to clean your computer.

#3 buddy215

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Posted 11 February 2007 - 08:20 AM

See if you recognize any of these. Removal instructions are included.
http://www.bleepingcomputer.com/forums/t/80749/how-to-remove-spycrush-removal-instructions/
http://www.bleepingcomputer.com/forums/t/69886/how-to-remove-antivermins-antiverminser-or-antivermeans-removal-instructions/
http://www.bleepingcomputer.com/forums/t/63896/how-to-remove-virusburst-removal-instructions/
“Every atom in your body came from a star that exploded and the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics...you are all stardust.”Lawrence M. Krauss
A 1792 U.S. penny, designed in part by Thomas Jefferson and George Washington, reads “Liberty Parent of Science & Industry.”

#4 masterofmind1969

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Posted 11 February 2007 - 03:42 PM

Try using trojan hunter it's one of the best trojan scanners out there. You can use the trial for 30 days, also download nod32 , trial version also. Never ever run windows in admin mode always run in power user or limited user account.

Make sure to have a good firewall. Good luck




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