Document programs that have obsolete version of security are the primary target of VBS.Sojax. The result of infection could be devastating because it will give an attacker to control the PC from a remote place.
VBS.Sojax is a Visual Basic Script Trojan that opens a backdoor on compromised computer, which will allow a remote attacker to take full control of it. The Trojan may also monitor system activities and steal sensitive information and other significant data. Using malicious documents, VBS.Sojax will enter the computer by exploiting several security breaches in Adobe Flash, Adobe Reader and MS Office.
Damage Level: Medium
Systems Affected: Windows 9x, 2000, XP, Windows Vista
Once VBS.Sojax is executed, it will drop malicious files under Temporary folder. Next, it will gather the following information and store it in a folder under C:\Windows\NtUninstallKB\:
- Running processes on the infected computer
- Critical network information such as IP Address, DNS and relevant configuration
- Computer information like user name, Operating System version, hardware profiles and many more
- Files including attributes on all drives found on the compromised system
Lastly, Trojan VBS.Sojax will configure Windows to open a backdoor that will allow a remote attacker to initiate the following:
- Upload and download files to and from a specified server
- Run .CMD commands
The Trojan will arrive as an attached document file such as .PDF and .DOC to spam email messages. To launch an attack, this Trojan will exploit security breaches and will take advantage of vulnerabilities in Adobe Flash Player, Microsoft Office RTF File, Adobe Acrobat and Adobe Reader. T
How to Remove VBS.Sojax
1. Temporarily Disable System Restore (Windows Me/XP). [how to]
2. To be able to identify even the most recent variant of VBS.Sojax, open your antivirus application and update the virus definition file.
3. Start Windows in Safe Mode with Networking.
- From a power-off state, turn on the computer and press F8 on your keyboard repeatedly.
- Your computer will display Windows Advanced Boot Options menu. Please select Safe Mode with Networking.
- The system will now boot Windows and loads only necessary drivers and 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 this link and download Norton Power Eraser.
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 VBS.Sojax 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.
Alternative Removal Method for VBS.Sojax
Option 1 : Use Windows System Restore to return Windows to previous state
If VBS.Sojax enters the computer, there is a big chance that Windows files, registry entries and other essential components are also infected. System Restore can reinstate clean system files by restoring the configuration to an earlier date. The method also replaces compromised files with a clean version. If you have a saved restore point before VBS.Sojax infiltrates the PC, we highly encourage you to execute this procedure if none of the above works. You may proceed with Windows System Restore, click here to see the full procedure.
Option 2 : VBS.Sojax manual uninstall guide
IMPORTANT! Manual removal of VBS.Sojax requires technical skills. Deleting system files and registry entries by mistake may result to total disability of Windows system. We advise you to perform a backup of registry before proceeding with this guide.
1. Kill any running process that belongs to VBS.Sojax.
- Press Ctrl+Alt+Del on your keyboard.
- When Windows Task Manager appears, look for VBS.Sojax files (refer to Technical Reference) and click End Process.
2. Delete all registry entries that belong to this malware.
- Press [Windows Key]+R on your keyboard.
- In the 'Open' dialog box, type regedit and press Enter. This will open registry editor.
- Find and delete registry entries as mentioned in Technical Reference section below.
- Close registry editor. Changes made will be save automatically.
3. Scan the computer with antivirus program.
- Connect to Internet and open your antivirus software. Please update to obtain the latest database and necessary files.
- Restart the computer in Safe Mode.
- Just before Windows logo begins to load press F8 on your keyboard.
- On Windows Advanced Boot Options, select Safe Mode and press Enter.
4. Delete all files dropped by VBS.Sojax.
- While still in Safe Mode, search and delete malicious files. Please refer to 'Technical Reference'. Make sure that you execute 'End Task' first before deleting the file. Otherwise, the system will not let you perform this action.