Backdoor.Eminoc may steal delicate data from your computer. Remove this Trojan at once to avoid remote attacker from staging more damages to your PC.
Backdoor.Eminoc is a dangerous Trojan specifically crated to modify certain Windows system file. The Trojan also opens a backdoor on the infected computer that may allow a remote attacker to execute malicious actions.
Damage Level: Medium
Systems Affected: Windows 9x, 2000, XP, Windows Vista
Once inside the computer, Backdoor.Eminoc will drop a copy of itself under System folder using a random file name. It also injects malicious code into “explorer.exe” file to run its functions on the affected system. The Trojan will register as a service to guarantee an automatic execution when Windows starts by altering the registry.
This Trojan also modifies the legitimate Windows system file “conime.exe” but will save a copy of the untouched version as “Eminoc_bd.dll.” Both files can be located under %Windir%\System32\.
Backdoor.Eminoc will create a backdoor that allows the remote attacker to execute the following procedures:
- Steal system information such as OS version, computer name, user name and password
- Connect to a remote server to download and execute more malware
- Take a snap shot of compromised computer’s screen
- Communicate to a distant computer and update itself
- Perform a computer restart after applying an update
Backdoor.Eminoc gets inside the computer through another Trojan infection. It may also be manually download and execute by unsuspecting user when visiting infected web sites.
How to Remove Backdoor.Eminoc
1. Temporarily Disable System Restore (Windows Me/XP). [how to]
2. To be able to identify even the most recent variant of Trojan.Zbot!gen4, 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 Trojan.Zbot!gen4 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 Backdoor.Eminoc
Option 1 : Use Windows System Restore to return Windows to previous state
If Backdoor.Eminoc 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 Backdoor.Eminoc 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 : Backdoor.Eminoc manual uninstall guide
IMPORTANT! Manual removal of Backdoor.Eminoc 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 Backdoor.Eminoc.
- Press Ctrl+Alt+Del on your keyboard.
- When Windows Task Manager appears, look for Backdoor.Eminoc 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 Backdoor.Eminoc.
- 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.