Trojan.Win32.Llac.aaf

Trojan.Win32.Llac.aaf is a Trojan that is capable of dropping and installing another threat on to the infected computer. Trojan.Win32.Llac.aaf or also identified by Microsoft as Worm:Win32/Rebhip.A, may also perform other malicious actions as configured by the Trojan author.

Alias:

  • Worm:Win32/Rebhip.A
  • Win32/Spatet.A
  • Trj/Spy.YM

Damage Level: Medium

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

Characteristics
When executed, Trojan.Win32.Llac.aaf drops a copy of itself on System folder of Windows. Then, it creates an entry on the registry for automatic execution when Windows starts. This Trojan may use random files such as indicated in “Associated Files and Folder” section.

Trojan.Win32.Llac.aaf can also inject its code into “iexplorer.exe” so that it runs when user opens Internet Explorer.

Once running on the system, the Trojan may perform malicious task including the following:

  • Gather details on installed security software
  • Monitor running processes and services
  • Logs key strokes and steals user name and password

Distribution
Trojan.Win32.Llac.aaf spreads via removable media devices. This is the reason why some anti-virus programs detected it as Autorun Worm. The Trojan will drop executable file on accessible removable drives together with an “autorun.inf” file that initiates the execution when the drive is mounted.

How to Remove Trojan.Win32.Llac.aaf

Systematic procedures to get rid of the threat are presented on this section. Make sure to scan the computer with suggested tools and scanners.

NOTE: We suggest that you PRINT or BOOKMARK this guide. There are steps that we may have to restart the computer in order to successfully remove the threat.

Step 1 : Run a scan with your antivirus program

1. First thing you should do is reboot the computer in Safe Mode with Networking to avoid Trojan.Win32.Llac.aaf from loading at start-up.

Remove all media such as Memory Card, cd, dvd, and USB devices. Then, restart the computer and please do the following:

Boot in Safe Mode on Windows XP, Windows Vista, and Windows 7 system
a) Before Windows begins to load, press F8 on your keyboard.
b) It will display the Advanced Boot Options menu. Select Safe Mode.

Start computer in Safe Mode using Windows 8 and Windows 10
a) Close any running programs on your computer.
b) Get ready to Start Windows. On your keyboard, Press and Hold Shift key and then, click on Restart button.
c) It will prompt you with options, please click on Troubleshoot icon.
d) Under Troubleshoot window, select Advanced Options.
e) On next window, click on Startup Settings icon.
f) Lastly, click on Restart button on subsequent window.
g) When Windows restarts, present startup options with numbers 1 - 9. Select "Enable Safe Mode with Networking" or number 5.

Startup Options

h) Windows will now boot on Safe Mode with Networking. Proceed with virus scan as the next step.

2. Once Windows is running under Safe Mode with Networking, open your antivirus program and download the most recent update. This method ensures that your antivirus program can detect even newer variants of Trojan.Win32.Llac.aaf.

Updating your antivirus software is a one-click process. Please refer to your software manual for complete instructions.

3. Once updating is finished, run a full system scan. After the scan, delete all infected items. If unable to clean or delete, better place the threat in quarantine.

Step 2: Run another test with online virus scanner

Another way to remove Trojan.Win32.Llac.aaf without the need to install additional antivirus software is to perform a thorough scan with free online virus scanner. It can be found on websites of legitimate antivirus and security provider.

1. Click the button below to proceed to the list of suggested Online Virus Scanner. Choose your desired provider. You can run each scan individually, one at a time, to ensure that all threats will be removed from the computer. This may require plug-ins, add-on or Activex object, please install if you want to proceed with scan.

Online Virus Scan

2. After completing the necessary download, your system is now ready to scan and remove Trojan.Win32.Llac.aaf and other kinds of threats.
3. Select an option in which you can thoroughly scan the computer to make sure that it will find and delete entirely all infections not detected on previous scan.
4. Remove or delete all detected items.
5. When scanning is finished, you may now restart the computer in normal mode.

Alternative Removal Procedures for Trojan.Win32.Llac.aaf

Option 1 : Use Windows System Restore to return Windows to previous state

During an infection, Trojan.Win32.Llac.aaf drops various files and registry entries. The threat intentionally hides system files by setting options in the registry. With these rigid changes, the best solution is to return Windows to previous working state is through System Restore.

To verify if System Restore is active on your computer, please follow the instructions below to access this feature.

Access System Restore on Windows XP, Windows Vista, and Windows 7

a) Go to Start Menu, then under 'Run' or 'Search Program and Files' field, type rstrui.
b) Then, press Enter on the keyboard to open System Restore Settings.

rstrui-win7

Open System Restore on Windows 8

a) Hover your mouse cursor to the lower left corner of the screen and wait for the Start icon to appear.
b) Right-click on the icon and select Run from the list. This will open a Run dialog box.
c) Type rstrui on the 'Open' field and click on OK to initiate the command.

rstrui-win8

If previous restore point is saved, you may proceed with Windows System Restore. Click here to see the full procedure.

Option 2 : Trojan.Win32.Llac.aaf manual uninstall guide

IMPORTANT! Manual removal of Trojan.Win32.Llac.aaf 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 Trojan.Win32.Llac.aaf.

- Press Ctrl+Alt+Del on your keyboard.
- When Windows Task Manager appears, look for Trojan.Win32.Llac.aaf files (refer to Technical Reference) and click End Process.

End Task

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.

Run Regedit

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 using the procedures above.
- Open your anti-virus program and thoroughly run a scan on the computer. Delete/Quarantine all identified threats to remove Trojan.Win32.Llac.aaf effectively.

4. Delete all files dropped by Trojan.Win32.Llac.aaf.

- 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.

Technical Reference

Associated Files and Folders:Added Registry Entries:

Ways to Prevent Trojan.Win32.Llac.aaf Infection

Take the following steps to protect the computer from threats. Suggested tools and security setup within installed software helps prevent the same attack on your PC.

Install an effective anti-malware program

Your first line of defense would be an effective security program that provides real-time protection. We have a list of anti-malware program that are tried and tested. It does not only scan files but also monitors your Internet traffic and is extremely active on blocking malicious communication. Click on the button below to download our recommended anti-malware program.

Get Protection Software

Always update your installed software

Software vendors constantly releases updates for programs whenever a flaw is discovered. Getting the updates makes the computer more secured and help prevents Trojan, virus, malware, and Trojan.Win32.Llac.aaf similar attacks. If in case your program is not set for instant update, it usually offered from vendor's web site, which you can download anytime.

Maximize the security potential of your Internet browser

Each browser has their own feature where in you can adjust the security settings that fit your browsing habit. We highly encourage you to maximize the setup to tighten the security of your browser.

Apply full caution when using the Internet

Internet is full of fraud, malware, and many forms of computer threats including Trojan.Win32.Llac.aaf. Implement full caution with links that you may receive from emails, social networking sites, and instant messaging programs. It might lead you to malicious sites that can cause harm to your computer. Avoid strange web sites that offers free services and software downloads.

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