These ransomware tricks fool the most hardened security pro

Cybercriminals use these methods to pull the wool over unsuspecting victims.

Ransomware quite often target businesses (for example hospitals) rather than individuals. Corporations have more valuable data and more money for ransom (ransom increases from roughly $500 per computer to $15,000 for the entire enterprise).

Cyphort has examined different variants of ransomware to help users get an idea of what might be coming down the Internet pipeline. So keep an eye out for these characteristics before your network is taken hostage.

RELATED: Who is a target for ransomware?

1. Jigsaw

Deleting files at regular intervals to increase the urgency to pay ransom faster. Jigsaw ransomware operates like this: for every hour that passes in which victims have not paid the ransom, another encrypted file is deleted from the computer, making it unrecoverable even if the ransom is paid or files decrypted via another method. The malware also deletes an extra 1,000 files every time victims restart their computers and log into Windows.

2. Petya

Encrypting entire drives, Petya ransomware encrypts Master File Table. This table contains all the information about how files and folders are allocated.

3. RansomWeb, Kimcilware

Encrypting web servers data. RansomWeb, Kimcilware are both families that takes this unusual route - instead of going after users’ computers, they infect web servers through vulnerabilities and encrypt website databases and hosted files, making the website unusable until ransom is paid.

4. DMA Locker, Locky, Cerber and CryptoFortress

Encrypting data on network drives, even on those ones that are not mapped. DMA Locker, Locky, Cerber and CryptoFortress are all families that attempt to enumerate all open network Server Message Block (SMB) shares and encrypt any that are found.

5. Maktub

Compressing files first is to speed up the encryption process. Maktub ransomware does this.

6. Not safe in the cloud

Deleting or overwriting cloud backups. In the past, backing up your data to cloud storage and file shares was safe. However, newer versions of ransomware have been able to traverse to those shared file systems making them susceptible to the attack.

08 simplelocker Thinkstock

7. SimpleLocker

Targeting non-Windows platforms. SimpleLocker encrypts files on Android, while Linux.Encode.1 encrypts files on Linux, and KeRanger on OSX.

8. Cerber

Using the computer speaker to speak audio messages to the victim. Cerber ransomware generates a VBScript, entitled “# DECRYPT MY FILES #.vbs,” which allows the computer to speak the ransom message to the victim. It can only speak English but the decryptor website it uses can be customized in 12 languages. It says “Attention! Attention! Attention!” “Your documents, photos, databases and other important files have been encrypted!”

9. Tox

Ransomware as a service is a model offered on underground forums networks. It will provide the malicious code and infrastructure to facilitate the transfer of funds and the encryption key for the victim to be able to access their information. Tox ransomware does this.

Join the CSO newsletter!

Error: Please check your email address.

More about DMALinux

Show Comments

Featured Whitepapers

Editor's Recommendations

Solution Centres

Stories by Ryan Francis

Latest Videos

  • 150x50

    CSO Webinar: Will your data protection strategy be enough when disaster strikes?

    Speakers: - Paul O’Connor, Engagement leader - Performance Audit Group, Victorian Auditor-General’s Office (VAGO) - Nigel Phair, Managing Director, Centre for Internet Safety - Joshua Stenhouse, Technical Evangelist, Zerto - Anthony Caruana, CSO MC & Moderator

    Play Video

  • 150x50

    CSO Webinar: The Human Factor - Your people are your biggest security weakness

    ​Speakers: David Lacey, Researcher and former CISO Royal Mail David Turner - Global Risk Management Expert Mark Guntrip - Group Manager, Email Protection, Proofpoint

    Play Video

  • 150x50

    CSO Webinar: Current ransomware defences are failing – but machine learning can drive a more proactive solution

    Speakers • Ty Miller, Director, Threat Intelligence • Mark Gregory, Leader, Network Engineering Research Group, RMIT • Jeff Lanza, Retired FBI Agent (USA) • Andy Solterbeck, VP Asia Pacific, Cylance • David Braue, CSO MC/Moderator What to expect: ​Hear from industry experts on the local and global ransomware threat landscape. Explore a new approach to dealing with ransomware using machine-learning techniques and by thinking about the problem in a fundamentally different way. Apply techniques for gathering insight into ransomware behaviour and find out what elements must go into a truly effective ransomware defence. Get a first-hand look at how ransomware actually works in practice, and how machine-learning techniques can pick up on its activities long before your employees do.

    Play Video

  • 150x50

    CSO Webinar: Get real about metadata to avoid a false sense of security

    Speakers: • Anthony Caruana – CSO MC and moderator • Ian Farquhar, Worldwide Virtual Security Team Lead, Gigamon • John Lindsay, Former CTO, iiNet • Skeeve Stevens, Futurist, Future Sumo • David Vaile - Vice chair of APF, Co-Convenor of the Cyberspace Law And Policy Community, UNSW Law Faculty This webinar covers: - A 101 on metadata - what it is and how to use it - Insight into a typical attack, what happens and what we would find when looking into the metadata - How to collect metadata, use this to detect attacks and get greater insight into how you can use this to protect your organisation - Learn how much raw data and metadata to retain and how long for - Get a reality check on how you're using your metadata and if this is enough to secure your organisation

    Play Video

  • 150x50

    CSO Webinar: How banking trojans work and how you can stop them

    CSO Webinar: How banking trojans work and how you can stop them Featuring: • John Baird, Director of Global Technology Production, Deutsche Bank • Samantha Macleod, GM Cyber Security, ME Bank • Sherrod DeGrippo, Director of Emerging Threats, Proofpoint (USA)

    Play Video

More videos

Blog Posts

Market Place