Win32:Alureon-EJ [RTK]

Win32:Alureon-EJ is a Trojan that can hide its presence on the infected system by using a Rootkit techniques. Win32:Alureon-EJ will embed itself on legitimate Windows process so that only a copy of that process is visible on the system. This threat belongs to a family of Trojan that steals sensitive information from victim’s computer. The Trojan may also inject codes to various system drivers causing it to become corrupted and unusable. It greatly affects the overall performance of the computer and sometimes leads to instability and failure of the entire system.

Also Identified As:
Avira: TR/Dldr.DNSChanger
CA: Win32/Alureon
Dr. Web: Trojan.DnsChange
Ikarus: Trojan.Zlob
Kaspersky: Trojan-Downloader.Win32.Zlob
McAfee: DNSChanger
Sophos: Troj/Zlob
Sunbelt Software: Trojan-Downloader.Win32.Femad
Symantec: Trojan.Zlob
Trend Micro: TROJ_DNSCHAN

Damage Level: High

Systems Affected: Windows 9x, 2000, XP, Windows Vista

Characteristics
The Trojan steals sensitive information by intercepting inbound and outbound Internet traffic from the compromised system. User’s online credentials like user name and password, banking information and credit card data are at risk when Win32:Alureon-EJ [RTK] infiltrate a computer. It also modifies network configuration specifically DNS settings of the compromised PC to perform its tasks.

How to Remove Win32:Alureon-EJ [RTK]

1. Temporarily Disable System Restore (Windows Me/XP). [how to]
2. To identify even the most recent variant of Win32:Alureon-EJ [RTK] , open your antivirus application and update the virus definitions.

3. Start Windows in Safe Mode with Networking.
- From a power-off state, turn on the computer and press F8 repeatedly.
- Your computer will display Windows Advanced Boot Options menu. Select Safe Mode with Networking.
- System will boot Windows loading only necessary drivers and system files.

4. Open your antivirus program and run a full system scan. After the scan, delete all infected items. If unable to delete, better place them in quarantine. Once the scan is complete, please proceed with the next step.

Scan with Norton Power Eraser:

Additional virus removal tool like Norton Power Eraser provides deep scanning technology to eliminate other threats not detected by a normal virus scan. Use this tool with extra caution.

5. Go to Norton Power Eraser web page and download the tool.
6. Once the download completes, double click on the file NPE.exe to run the program.
7. It will prompt for End User License Agreement, click on Accept to continue.
8. On NPE main window, click on Scan. Then select Exclude Rootkit Scan. Click on Continue to proceed.
9. Virus scanning may take some time. After running the scan, NPE will display the scan result.

Important! If there are any detected threats under Suspicious, remove the check mark. Only threats in Detected category are necessary to remove at this point. Make sure that you mark the Create System Restore Point before proceeding with the fix.

10. Now click on Fix to start removing the threats including Win32:Alureon-EJ [RTK] remnants if there are any.
11. When done, Norton Power Eraser will restart the computer. Then after a reboot, it will initialize and display the eliminated threats.
12. You may now close Norton Power Eraser.