Ransom Cryptolocker Variant

Untitled Document

Virus Alert -

Ransom Cryptolocker Variant

Some of you may be aware of the latest strain of Ransomware Trojans, Cyrptolocker (a.k.a. Ransomcrypt). The Cryptolocker encrypts and locks individual files and then prompts the user to purchase a password to decrypt them. There is no way to retrieve the locked files without the attacker's private key.

How do you know if you have been affected by Cryptolocker?

You will be presented with a ransom demand and will no longer be able to use your computer. The demand could look similar to the picture to the right.

How do you get infected?

Victims receive email messages with attachments or links to download documents. In some cases it could be from familiar companies. We recently received a suspicious email at TAB. The email looked like it was coming from our efax service. It seemed odd that it called for the recipient to download the message from dropbox. This was a scam, and a variant of the Ransom Cryptolocker.

What happens if the zip file is opened or downloaded?

If the attachment is opened or the link is clicked on, an executable file is downloaded. This executable file will eventually download and install the Trojan.Cryptolocker onto the computer. Once the Cryptolocker is installed it downloads the public key that is used to encrypt the files on the computer. This key is located on the cyber criminal's server. The encrypted files cannot be used without access to the cyber criminals server.

How can you protect yourself?

  • Never open, download, or click on a link or attachment in an email that is unfamiliar to you.
  • DO NOT PAY - There is no assurance that you will receive the decoder key
  • Call TAB
  • Install our PatrolDOG Web and Email Defense service. This service strips malicious code from emails and stops users from going to websites with malicious code.

Please contact us if you have any questions.

Thank you,

TAB Computer Systems, Inc.

 

Facebook's IPO Valuation: Realistic?

As the hype surrounding Facebook stock builds, investors must question whether or not Facebook is a realistic and profitable investment. Facebook's expected valuation is $75-100 billion. This would make it more valuable than older, established companies that actually provide physical products to the consumer. With this valuation Facebook becomes more valuable than Disney ($77 billion market cap), Nike ($50 billion market cap), and Kraft ($68 billion market cap).

[More]

Protect yourself when shopping Online!

Shoe and apparel retailer Zappos.com disclosed a major data breach on Sunday January 15, 2012. The shoe retailer is requiring customers to change their passwords to the website, as customer name and address data may have been accessed, along with last four digits of customer credit cards (but not full credit card numbers.) Sources indicate that the entire customer base of 24 million may be affected.

[More]

The 1-2-3 Punch to protect your home PC and the ultimate “rip cord” - Alt-F4!

It appears that the Malware and Virus creeps have been very busy over the Holiday season wreaking their own brand of cyber-terror on the world at large. As such, I felt it might be time to revisit some guidelines for protecting yourself from Malware and Virus attacks. I use this approach on all of my home PC platforms and it has kept us Virus and Malware free for years:

[More]

A Comparison of Internet Browsers

An Internet Browser allows users to navigate the millions of websites available on the web. In addition to this core feature, browsers store bookmarks, use toolbars, and various add-ons for an enhanced experience on the Internet. There are five browsers that make up a majority of browser usage on the web. These include: Mozilla Firefox, Google Chrome, Internet Explorer, Safari, and Opera. When trying to compare which browser is best, it is important to look at many different factors. A thorough examination of each browser should reveal which product is the true market leader in the explosive web browsing market.

[More]

Dell's Financial Struggles in Consumer Electronics

Dell has always been among the largest competitors in the tech industry, and even more specifically the PC market. However, Dell is beginning to lose a lot of its momentum as the tides have swiftly changed in the world of consumer electronics.

[More]

SOPA and the Internet

The Stop Online Piracy Act or SOPA is a bill introduced in the Legislature on October 26, 2011 that will grant copyright holders and U.S. law enforcement greater authority to fight the online trafficking of copyrighted material. Under the bill, copyright holders and the U.S. Department of Justice would be able to file court orders against websites involved in copyright infringement.

[More]