Q - What do I need to know about the April Fool's Virus ( aka Conficker Worm )?
A - What is the name of the virus?
Generally called the April Fool’s Virus or the Conficker Worm.
Trend Micro identifies it as … WORM-DOWNAD.A, WORM_DOWNAD.AD, WORM_DOWNAD.KK ; other variations of this name may be detected as well
Also known as Win32/Conficker.A, KIDO and DOWNADUP.
Warning, before you do anything …
- Windows Updates generally download and install properly but not always. Sometimes these updates do not work right and can cause minor or major problems for you.
- Windows Updates generally work well with your existing software but not always. Sometimes your software might not work after installing an update. Many programmes are only supported to a certain level – for example Windows XP Service Pack 2. Therefore, you should always check with your Software Vendor and Technical Advisor before updating Windows.
- Business customers may be specifically vulnerable as they usually use a wide variety of software.
- If you are not sure you can deal with the consequences of anything mentioned here - don’t do it.
April Fool’s Virus Summary:
- Largely preventable if you apply the all of Microsoft’s Critical Security Updates before it strikes you. Specifically important is the “Vulnerability in Server Service Could Allow Remote Code Execution (958644)”.
- Infections come from the Internet, infected computers on your network, Removable Media such as a USB Thumb Drive.
- The infection has not yet caused any damage as I write this but if you have the infection you may be vulnerable to a Hacker running programmes on your computer remotely.
- Like all viruses it will have many variations that produce a variety of behaviour – this may go on for months or even years.
- Its main goal is to reproduce and propagate through the Internet, your Network or any Removable Device you connect to your computer.
- There is a Removal Tool that works on ‘known’ variations of the infection.
Trend Micro Users:
- An Updated, Full Scan with Trend Micro should allow you to detect and remove the infection.
- You must install all Microsft Windows Security Updates to keep it from reinfecting
How can I prevent it?
A. Proactive Approach:
- do this first, start with your most important computer
- Install All Microsoft Security Updates. Warning: this can cause issues with software that is not compatible with all of the latest Windows Updates.
However, if you don’t fully update your system it may become infected again and again.
- Update your anti-virus software and then disconnect the computer from your Router or Modem. Run a full virus scan on all of your hard drives. Remove all infections. Restart your computer and re-run the scan. You want to ensure that your system finds no infections on the ‘final’ scan.
- Disable the Auto-Run policy in Windows. I recommend you ask a professional for help with this step.
- Do not use any removable drives such as USB Thumb Drives and external hard drives, Digital Cameras and Memory Cards may also be vulnerable.
B. Damage Control:
- for users on infected computers or networks
- prevent the spread of the infection
If you are not sharing files or printers on your network turn off file sharing. Warning: this will prevent your computer from networking with other computers. I recommend you ask a professional for help with this step.
Signs Your Computer Is Infected?
A. Basic Symptoms:
- Your Computer is slower than normal to startup or use when fully loaded. You find it really slow getting email or any time you are connected to the Internet.
- You are unable to Run, Update or Scan using your Anti-Virus software.
- You are unable to access or use the Microsoft Windows Update Site ( http://windowsupdate.microsoft.com ). Many users find they cannot install Microsoft’s Update called the “Malicious Software Removal Tool”.
- Your entire Network is slow which will mean Internet Connections are slower.
- Unable to log onto your computer.
B. Specific Symptoms:
- there are variations of the infections and so you may have some, none or all of these issues
- When you insert removable media ( USB Thumb Drive, CD, etc.) you may find an extra “Auto-Play” option that says something like “Open folder to view files, Unpublished”
- Important Services are disabled such as BITS, Windows Error Reporting, Windows Security Center, Windows Auto Update Service, etc. This can be viewed in Control Panel, Administrator’s Tools, Services.
- Your Anti-Virus detected infections on your Network’s file shares, a Removable Device or any Vulnerable computer on your Network.
- The infection attempts to make numerous connections on your Computer, Network and the Internet searching for (a) Vulnerable computers (b) Open File Shares (c) Removable Media ( ex. USB Thumb Drive ) (d) Weak Passwords
- Port 445 has been used by some variations of this infection to propagate.
- Specific Windows files such as svchost.exe and services.exe are infected.
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