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Trojan.killav


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#1 Bleeping Username

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Posted 18 May 2008 - 10:44 AM

hello,

I use AVG free version for anti-virus on XP Home Ed. I used to use Norton, but let it expire. It is still on my machine though, and lets me know if it picks up threats.
My problem is this; My AVG says everything is clean, yet Norton says it found "Trojan.KillAV".
Is Norton for real or are they trying to scare me into buying their product? If I do indeed have this "Trojan.KillAV", then how can I remove it?
Please help!
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Edited by Bleeping Username, 18 May 2008 - 01:34 PM.


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#2 boopme

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Posted 18 May 2008 - 02:04 PM

Check it out with this.
Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • Make sure you are connected to the Internet.
  • Double-click on Download_mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
  • MBAM will automatically start and you will be asked to update the program before performing a scan. If an update is found, the program will automatically update itself. Press the OK button to close that box and continue. If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install.
  • On the Scanner tab:
    • Make sure the "Perform Quick Scan" option is selected.
    • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
  • Back at the main Scanner screen, click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad and you may be prompted to restart your computer. (see Note below)
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply and exit MBAM.
Note: If MBAM encounters a file that is difficult to remove, you will be presented with 1 of 2 prompts. Click OK to either and let MBAM proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot will prevent MBAM from removing all the malware.
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#3 Bleeping Username

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Posted 18 May 2008 - 03:55 PM

Hi boopme,

Thanks for your help, my friend. I followed your instructions.
Here's the results. I see it found no "Trojan-KillAV", but a few addware things.
*So, does this mean Norton is trying to play me???




Malwarebytes' Anti-Malware 1.12
Database version: 762

Scan type: Quick Scan
Objects scanned: 42154
Time elapsed: 12 minute(s), 0 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 5
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
C:\Program Files\MyWebSearch (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\bar (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\MyWebSearch\SrchAstt (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\FunWebProducts (Adware.MyWebSearch) -> Quarantined and deleted successfully.
C:\Program Files\FunWebProducts\ScreenSaver (Adware.MyWebSearch) -> Quarantined and deleted successfully.

Files Infected:
(No malicious items detected)

#4 boopme

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Posted 18 May 2008 - 08:21 PM

Hello Bleeping Username, well this is a legitimate piece of malware and as you can see sometimes one scanner won't see what another does. Also sometime one AV is reading the others quarantine or Virus signature list and reports a find. That is why only one AV should be active at a time. Since the Norton is expired you may want to remove it. Well do that after this if you want.
Run another scan please.
Also is Norton still seeing the Trojan?
This is a 2 part scan if malware is found.
S!Ri's SmitfraudFix

Please download SmitfraudFix

Double-click SmitfraudFix.exe
Select option #1 - Search by typing 1 and press "Enter"; a text file will appear, which lists infected files (if present).
Please copy/paste the content of that report into your next reply.

Note : process.exe is detected by some antivirus programs (AntiVir, Dr.Web, Kaspersky) as a "RiskTool"; it is not a virus, but a program used to stop system processes. Antivirus programs cannot distinguish between "good" and "malicious" use of such programs, therefore they may alert the user.
http://www.beyondlogic.org/consulting/proc...processutil.htm
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#5 Bleeping Username

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Posted 19 May 2008 - 10:58 AM

Hi boopme,

Norton didn't have any trojan message for me today, but it has skipped days before, and then given me the
same Trojan-KillAV message again later.
Anyway, here are the results of the SmitFraudFix:


SmitFraudFix v2.320

Scan done at 8:46:12.38, Mon 05/19/2008
Run from C:\Documents and Settings\HP_Owner\Desktop\SmitfraudFix
OS: Microsoft Windows XP [Version 5.1.2600] - Windows_NT
The filesystem type is NTFS
Fix run in normal mode

Process


hosts


C:\


C:\WINDOWS


C:\WINDOWS\system


C:\WINDOWS\Web


C:\WINDOWS\system32


C:\WINDOWS\system32\LogFiles


C:\Documents and Settings\HP_Owner


C:\Documents and Settings\HP_Owner\Application Data


Start Menu





Desktop


C:\Program Files


Corrupted keys


Desktop Components

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Desktop\Components\0]
"Source"="About:Home"
"SubscribedURL"="About:Home"
"FriendlyName"="My Current Home Page"

#6 quietman7

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Posted 19 May 2008 - 02:36 PM

You did not post a complete log after using SmitFraudFix.

hidr.exe is related to the W32.Beagle.DZ P2P worm. This is a dangerous infection often seen with rootkit components.

Rootkits are very dangerous because they use advanced techniques as a means of accessing a computer system that bypasses security mechanisms and steal sensitive information which they send back to the hacker. Many rootkits can hook into the Windows 32-bit kernel, and patch several APIs to hide new registry keys and files they install. Remote attackers use backdoor Trojans and rootkits as part of an exploit to gain unauthorized access to a computer and take control of it without your knowledge.

If your computer was used for online banking, has credit card information or other sensitive data on it, you should immediately disconnect from the Internet until your system is cleaned. All passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised. They should be changed by using a different computer and not the infected one. If not, an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?

Although the rootkit has been identified and may be removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume that because the rootkit has been removed the computer is now secure. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Please read "When should I re-format? How should I reinstall?", "Help: I Got Hacked. Now What Do I Do?" and "Reformatting the computer or troubleshooting; which is best?".

Should you decide not to follow that advice, we will do our best to help clean the computer of any infections but we cannot guarantee it to be trustworthy or that the removal will be successful. If you wish to proceed, please do the following.

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log" and complete all the steps. There are instructions for downloading and running Deckard's System Scanner (DSS) which will create a hijackthis log for you, or automatically download and install the most current version of HijackThis if it's not already installed on your computer.

When you have done that, post your log in the HijackThis Logs and Malware Removal 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. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

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 "bump" your post or 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.
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#7 Bleeping Username

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Posted 19 May 2008 - 04:28 PM

quietman7,
I posted everything that SmitFraudFix gave me. I'm not sure what you are talking about. What am I missing?
Furthermore, you talk of an "hidr.exe". I've looked over my posts here, and do not see this "hidr.exe"
anywhere within them. Where do you see it?

#8 quietman7

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Posted 19 May 2008 - 08:10 PM

Your log stops at Desktop Components. There are several areas the tool checks to include Sharedtaskscheduler, AppInit_DLLs, Winlogon.System and DNS which are not present.

The image you provided in your first post showing the NAV Virus Alert shows the high risk detection as hidr.exe (Trojan.KillAV) located in one of your C:\Documents and Settings folders. That was the topic of your thread.

Further, you should not have more than one anti-virus installed. The primary concern with using more than one anti-virus program is due to conflicts that can arise when they are running in real-time mode simultaneously. Anti-virus software components insert themselves into the operating systems core and using more than one can cause instability, crash your computer, slow performance and waste system resources. When actively running in the background while connected to the Internet, they both may try to update their definition databases at the same time. As the programs compete for resources required to download the necessary files this often can result in sluggish system performance or unresponsive behavior.

Each anti-virus will often interpret the activity of the other as a virus and there is a greater chance of them alerting you to a "False Positive". If one finds a virus and then the other also finds the same virus, both programs will be competing over exclusive rights on dealing with that virus. Each anti-virus will attempt to remove the offending file and quarantine it. If one finds and quarantines the file before the other one does, then you encounter the problem of both wanting to scan each other's zipped or archived files and each reporting the other's quarantined contents. This can lead to a repetitive cycle of endless alerts that continually warn you that a virus has been found when that is not the case.

Anti-virus scanners use virus definitions to check for viruses and these can include a fragment of the virus code which may be recognized by other anti-virus programs as the virus itself. Because of this, most anti-virus programs encrypt their definitions so that they do not trigger a false alarm when scanned by other security programs. However, some anti-virus vendors do not encrypt their definitions and will trigger false alarms if used while another resident anti-virus program is active.

To avoid these problems, use only one anti-virus solution. Deciding which one to remove is your choice.
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