Hacking extortionist resurfaces

"Ransomware" has reappeared and is trying to extort US$300

"Ransomware" last seen in 2006 has reappeared and is trying to extort US$300 from users whose files the malware has encrypted, a Russian security researcher said Monday.

GpCode, a Trojan horse which last made a run at users last summer, has popped up again, said Aleks Gostev, senior virus analyst with Moscow-based Kaspersky Lab, in a posting to the research center's blog.

Noting the long quiet time, Gostev added: "So you can imagine our feelings this weekend, when some of our non-Russian users told us their documents, photos, archive files etc. had turned into a bunch of junk data, and a file called 'read_me.txt' had appeared on their systems."

The text file contained the "ransom" note.

"Hello, your files are encrypted with RSA-4096 algorithm. You will need at least few years to decrypt these files without our software. All your private information for last 3 months were collected and sent to us. To decrypt your files you need to buy our software. The price is $300."

So-called ransomware typically follows the GpCode pattern: malware sneaks onto a PC, encrypts files, and then displays a message demanding money to unlock the data.

Gostev hinted that the blackmailer was likely Russian. "The e-mail address is one that we've seen before in LdPinch and Banker [Trojan horse] variants, programs which were clearly of Russian origin," he said.

The blackmailer's claim that the files were enciphered with RSA-4096 -- the RSA algorithm locked with a 4,096-bit key -- is bogus, said Gostev. Another oddity, he added, was that the Trojan has a limited shelf life: from July 10 to July 15.

"Why? We can only guess," said Gostev.

Kaspersky is working on a decryption scheme to recover the files; that process has been the usual salvation -- and solution -- for users attacked by ransomware. "[But] we'd just like to remind you, if you've fallen victim to any type of ransomware, you should never pay up under any circumstances.

"Contact your antivirus provider, and make sure you back up your data on a regular basis."

Join the PC World newsletter!

Error: Please check your email address.

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Gregg Keizer

Computerworld
Show Comments

Essentials

Lexar® JumpDrive® S57 USB 3.0 flash drive

Learn more >

Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop

Learn more >

Mobile

Lexar® JumpDrive® S45 USB 3.0 flash drive 

Learn more >

Exec

Audio-Technica ATH-ANC70 Noise Cancelling Headphones

Learn more >

HD Pan/Tilt Wi-Fi Camera with Night Vision NC450

Learn more >

Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards 

Learn more >

Lexar® JumpDrive® C20c USB Type-C flash drive 

Learn more >

Budget

Back To Business Guide

Click for more ›

Most Popular Reviews

Latest News Articles

Resources

PCW Evaluation Team

Michael Hargreaves

Windows 10 for Business / Dell XPS

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Aysha Strobbe

Windows 10 / HP Spectre

Ultimately, I think the Windows 10 environment is excellent for me as it caters for so many different uses. The inclusion of the Xbox app is also great for when you need some downtime too!

Mark Escubio

Windows 10 / Lenovo Yoga

For me, the Xbox Play Anywhere is a great new feature as it allows you to play your current Xbox games with higher resolutions and better graphics without forking out extra cash for another copy. Although available titles are still scarce, but I’m sure it will grow in time.

Kathy Cassidy

STYLISTIC Q702

First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni

STYLISTIC Q572

For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?