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Thread ID: 68395 2006-04-26 21:26:00 ZAdobeGammaLoader.exe - What it is, and How to get rid of it. TiJay (6055) Press F1
Post ID Timestamp Content User
449821 2006-04-26 21:26:00 I used my Symantec Gold Support ID to submit the file to Symantec, and got a responce within a few minutes...here is the paste of the Email:


Dear TiJay,

We have analyzed your submission. The following is a report of our findings for each file you have submitted:

filename: ZAdobeGammaLoader.exe
machine: Machine
result: This file is detected as Trojan.Adclicker. www.symantec.com

Developer notes:
ZAdobeGammaLoader.exe is non-repairable threat. NAV with the latest available definition detects this. Please delete this file and replace it if neccessary. Please follow the instruction at the end of this email message to install the latest available definitions.

Symantec Security Response has determined that the sample(s) that you provided are infected with a virus, worm, or Trojan. We have created RapidRelease definitions that will detect this threat. Please follow the instruction at the end of this email message to download and install the latest RapidRelease definitions.
Symantec is now building a new set of definitions to include the threat you have submitted. The approximate time to complete this process is one hour. We recommend checking the ftp site periodically over the next 60 to 90 minutes to download these definitions as soon as they are available.

As for the Trojan.Adclicker information:




Distribution (securityresponse.symantec.com)

Ports (securityresponse.symantec.com): Generates outgoing HTTP traffic (usually on TCP port 80).
Technical Details

When Trojan.Adclicker is executed, it does the following:


Copies itself to your computer, often to the Windows or System folder.
Sends HTTP requests to various Web sites. The request typically takes the form of an HTTP GET request, with the Referer field set to a Web site, which the Trojan's author controls.
Depending on the variant, the Trojan may also do the following:

Add a value:



"<any value>"="<the location of the trojan>"



to one of the registry keys:



HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Run

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\Curre ntVersion\Run





so that the Trojan runs when you start Windows.
Dynamically update itself by downloading new versions over the Internet.
Send email notification to its creator when it is executed.

Removal Instructions:
The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.


Disable System Restore (Windows Me/XP).
Update the virus definitions.
Restart the computer in Safe mode or VGA mode.
Run a full system scan and delete all the files detected as Trojan.Adclicker.
Delete the value that was added to the registry.
For specific details on each of these steps, read the following instructions.

1. Disabling System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:

"How to disable or enable Windows Me System Restore (service1.symantec.com)"
"How to turn off or turn on Windows XP System Restore (service1.symantec.com)"
For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article, "Antivirus Tools Cannot Clean Infected Files in the _Restore Folder (support.microsoft.com),"Article ID: Q263455.

2. Updating the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:

Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate) (http://#protection).
Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater) (http://#protection).



The Intelligent Updater virus definitions (securityresponse.symantec.com) are available: Read "How to update virus definition files using the Intelligent Updater (service1.symantec.com)" for detailed instructions.
3. Restarting the computer in Safe mode or VGA mode

For Windows 95, 98, Me, 2000, or XP users, restart the computer in Safe mode. For instructions, refer to the document, "How to start the computer in Safe Mode (service1.symantec.com)."
For Windows NT 4 users, restart the computer in VGA mode.

4. Scanning for and deleting the infected files
Start your Symantec antivirus program and make sure that it is configured to scan all the files.

For Norton AntiVirus consumer products: Read the document, "How to configure Norton AntiVirus to scan all files (service1.symantec.com)."
For Symantec AntiVirus Enterprise products: Read the document, "How to verify that a Symantec Corporate antivirus product is set to scan all files (service1.symantec.com)."

Run a full system scan.
If any files are detected as infected with Trojan.Adclicker, write down the path and file names, and then click Delete.
5. Deleting the value from the registry

CAUTION: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry (service1.symantec.com)," for instructions.
Click Start, and then click Run. (The Run dialog box appears.)
Type regedit



Then click OK. (The Registry Editor opens.)
Navigate to each of the keys:



HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Run

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\Curre ntVersion\Run
In the right pane, delete the any value that refers to the file detected in step 4.
Exit the Registry Editor.
TiJay (6055)
449822 2006-04-26 21:36:00 Sorry about the spaces oddly placed in Current Version on the registry path...I went in to edit it, and it wasn't there TO edit...odd - but they are still there - if you are in the registry, and don't know what all this means - do yourself a favor - close the registry editor and don't re-open it...this is a fix for people who know exactly what changing the registry can do to a computer, and how easy it actually is to completely screw your computer after. I will laugh at someone if they come online and say that after playing with this, their computer is doing something funny, or funnily(sp?) NOT doing something it's supposed to in start-up...

*IF* you decide to try it and don't know how much of a risk you are taking, microsoft planned for people like this. In the Registry Editor, go to File>Export and name the file RegBackup<date> or something like that...put it somewhere you can find if you need it. If you mess it up - import that registry file or just dbl click the file in your window's explorer.
TiJay (6055)
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