Virus Advisory: CryptoLocker

  • Episode 317
  • October 15, 2013

Adam Kujawa from Malwarebytes joins us to discuss what is possibly the most devastating computer virus of recent years, and how we can protect ourselves from it.

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This episode is sponsored in part by: Eco Alkalines.

Topics Covered:

  • {play 2:50}Announcing our Indiegogo crowdfunding campaign to build Studio D for Category5 Technology TV.
  • {play 5:13}Feature: An interview with Adam Kujawa from Malwarebytes about CryptoLocker: One of the most destructive viruses we've seen in a long time.
    • What makes CryptoLocker much different (and much more dangerous) than past ransomware.
    • Antivirus will remove a CryptoLocker infection, but your files will still be lost.
    • CryptoLocker will spider through mapped network shares and encrypt (destroy) all personal files that it finds. It is not limited to the local machine.
    • How CryptoLocker gets into someone's system.
    • Chrome vs. Firefox vs. Internet Explorer.
    • Making sure your Java and Flash are up to date may help protect you.
    • Disabling the Java extension in your browser may help.
    • CryptoLocker on Linux and Mac: currently it is only a concern if you have network shares accessible to Windows computers or virtual machines.
    • Malwarebytes Anti-Exploit is a new tool which offers a resident exploit blocker, proactively preventing the execution of CryptoLocker and other malware.
    • Backups (and backups of your backups) is the only real protection right now against CryptoLocker.
    • CryptoLocker is [currently] unable to affect Volume Shadow Copies, so you may be able to recover some or all of your files if you have a recent snapshot on your Windows machine.
    • Offsite backup (Free Trial) offers the best protection for your files.
    • A RAID 1 as a backup solution will not protect you from CryptoLocker: all files will be lost.
    • Even if you have a good backup, recovery can take a lot of time.
    • Malwarebytes Anti-Malware PRO includes protection which prevents Malware execution, and therefore protects against viruses such as CryptoLocker.
    • CryptoLocker could even use your Windows virtual machines to crawl your Linux network and destroy your files.
    • CryptoLocker doesn't necessarily come from "bad" sites. Legitimate web sites can become infected and then begin distributing the code.
    • CryptoLocker's infection is spreading, and it is believed that this is just the beginning of this type of dangerous malware.
    • Windows XP machines are more susceptible than newer systems because the software can no longer be updated.
    • Product Giveaway: A lifetime license of Malwarebytes Anti-Malware PRO.
    • The Malwarebytes Blog features a post about CryptoLocker.
    • Robbie's Blog also has a post specifically about CryptoLocker.
  • {play 28:27}Welcome to newly registered viewers.
  • {play 30:33}Top Stories from the Category5.TV Newsroom
    • A new wireless pacemaker is less than 1/10th the usual size, and is approved in the EU.
    • A secure email service is going to be developed in Brazil.
    • Ford is working on tech that takes over your vehicle in event of a pending collision.
    • A frightening exploit has been found in D-Link routers.
  • {play 39:33}Viewer Question: How do I install wine on Point Linux?
    • Installing wine and winetricks on Linux.
    • Executing a Windows application from within Linux using wine.
    • Creating an application launcher on Linux which runs a Windows application using wine.
  • {play 45:51}Viewer Question: Can you give instructions for using dd to create a bootable drive from an ISO?
    • No: it would seem dd is the wrong tool for what the user is hoping to do. We hope to receive more information about their goal so we can assist.
  • {play 47:25}Viewer Question: I have a system dual-booting Windows 7 and Linux. On the Windows 7 partition, I would like to disable the USB ports, but still be able to use the USB keyboard and mouse. How do I do this?
    • The issue with simply disabling USB.
    • Disabling USB Mass Storage on Windows is very easy.
      • Backup your registry
      • Browse to HKEY_LOCAL_MACHINE->SYSTEM->CurrentControlSet->Services->USBSTOR
      • Locate the "Start" key on the right pane and change its value data to 4 to disable USB Storage (3 to re-enable)
      • Reboot your computer for the changes to take effect: you'll see plugging in a USB hard drive or flash drive will no longer work
    • Check out Endpoint Protector for software which would allow you to disable specific devices, such as USB WiFi adapters.
  • {play 52:44}Viewer Question: I believe you misunderstood my question from a couple weeks ago. My webcam works in Cheese on Linux, but not in Skype. Skype is pointing to /dev/video0.
    • Using Cheese to determine the device location of your webcam.
    • Verifying that Skype settings are pointing to the correct device location for your webcam.
  • {play 56:01}Viewer Picture: Here is my setup when watching the live show.
  • {play 57:44}Don't forget to support us through, with our thanks!
  • {play 58:27}Spacefish (Major Tom) died. Read about it in Robbie's blog.
  • Host: Robbie Ferguson
  • Co-Host: Christa Wells


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Episode 660 will be live August 12! See you then.

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