Ransomware took a company’s data hostage and almost destroyed the business in the process

Ransomware took a company’s data hostage and almost destroyed the business in the process


Imagine if all of your company cloud apps, financial data and security video footage – representing 10 years work – was instantly inaccessible to every single computer user in your business. It’s the stuff of nightmares, but it was all too real for a successful Australian tourism company last month.

On New Year’s Day, while most of the Western world was relaxing and celebrating, the Emsisoft team was busy fighting a very big fire – our chief technology officer (CTO) Fabian Wosar had dissected Ransom32, the first JavaScript ransomware to be unleashed on the world, and quickly reverse engineered the software to create a decrypter – free of charge as usual.

As we mentioned in our earlier blog post “Ransomware for Hire: 3 Steps to Keeping Your Data Safe“, companies risk having to reinvent man-years worth of intellectual property should their data be lost – and for thousands of companies this nightmare becomes reality every day.

Only a few weeks after we had published this blog, the IT & Compliance Manager at an Australian tourism company contacted us with a story that made our hair curl.

A “true disaster” for companies

The malicious ransomware software hijacked the company’s cloud solutions (Dropbox and One Drive accounts), all of their financial records and security footage amongst other things – a total of almost 20 TB of data and 10 years’ work, which was instantly inaccessible to the company’s 500 users.

As the manager writes below, it was a ‘TRUE DISASTER, one for which we were ill-prepared…

Read on to learn how the company responded.

Hi Fabian,

I wish to thank you for your help and support during the past week when we were hit with a RANSOMWARE virus. Your promptness in responding to our dilemma has literally saved our business!

It took us a week to find THE EXPERT and identify the virus / solution, and a further week for me to go around to every computer and reverse the damage.

I have since purchased 10 licenses of EMSISOFT due to its behaviour analysis which could have saved us from all the drama.

As you are aware this specific MALWARE scans all drives (including mapped) and in our case, a peer Windows 10 network, with all the machines storing personal files locally and group files on the server.

Our downfall was that all the PCs have shares to other data areas on other drives. ONE user clicking the Zip/EXE, therefore changed the DATA on 8 machines plus the server (via Shares). Local PCs are NOT backed up (not many do) with the server holding critical historical data.

Examples of data unusable were:

All ONLINE data shared via DROPBOX and 365 OneDrive Business for all our external agents – Currently 500 users – 2 x 1TB accounts
MYOB Account backup Zip file from last year and beyond
Legal & insurance records
Banking and other XLS files
Client marketing (PDF)
VOIP recording data
Video security footages
Website development (images)
Audit data
Tender documents / presentations (DOC, PPT)
etc., etc., etc.


Even backup data was affected

You may ask why no backup? There is, but again, it is file based / user (NAS)…e.g. \\SERVER\(N:)\User

All the client backups are “mapped” – therefore ALL copies of the files were also affected including all users’ PC File Histories saved from their respective PCs.
The server is backed up on a 3 drive rotation so by the time we found the issue they had also been copied over.

A file is either on a Client PC, the NAS, PC file History, the Server or Online…..However in OUR case- ALL NO GOOD.

An archive is taken every month, so we could have gone back 6 weeks for the server data but not the live NAS backups or the 8PC current data
To retrieve all the online storage again would have taken a considerable time.

We are currently searching for image based systems that can be both Archival and Incremental, while being able to restore to a point in time, rather than just changes in files – since the virus did change them, they were subsequently added into the backup.

In ALL, 1 Server (2TB), 8 PC (100GB each), various ONLINE storage (Business -2TB and Personal – 4TB), Client NAS Storage (4TB) and 6TB of Server Backup

Totalling almost 20 TB of data, and 10 years of work – inaccessible and users unable to function … a TRUE DISASTER, one for which we were ill-prepared…

Literally, a fire would have done less damage…this is a wake-up call and one which other companies should be made aware…

Again FABIAN, we cannot thank you enough for your tireless work in combatting the data threats in which we currently live, please accept our gratitude….

ALL DATA RECOVERED – NOT A Single file missing…


[Name withheld]
IT & Compliance Manager


What you can do to prevent ransomware nightmares like this:

1. Don’t store backups on local hard drives or mapped network shares, as they can be reached by malware too.

This case study validates our observation that security is only as good as the weakest link. To reduce the impact of a (hopefully never to strike) malware attack, make sure you don’t store backups on any drives that can be reached by your local user accounts without manually entering a password.

2. Close the entry gates: Keep your systems and your programs up to date and use a good real-time protection.

Often, the weakest links are well-intentioned employees who are focused on doing a good job, but don’t realize the security risks inherent in today’s online world. To close the entry gates, top priority is keeping your operating system and all your programs always up to date (not just once in a while – always, as in ‘every day’). Also make sure you’re running trustworthy real-time protection that catches all malicious files as they try to enter your computers.

Because you know what they say: An ounce of prevention is always worth a pound of cure.


  • TheSeeker11

    Emsisoft saves the day again! Love this program.

  • AdamPL

    Emsisoft is the best antivirus Software, i like this program. full 5 stars for Emsisoft.

  • I don’t understand, so remote drive like Dropbox and Spideroak are susceptible as well? So anything that sync’s is evil as well? I have resorted to backing up my most important files, images, stuff on an external HD that gets manually updated and then unplugged from the computer and the wall socket.

    • Christian

      Yes, any sorts of cloud drives don’t protect your data in that aspect. As soon as ransomware encrypts files in your local cloud drive copy, these files get synced up with the cloud (and potentially other machines of you too). But some cloud storage solutions store revisions of all files so you can jump back to an earlier state if needed.

      • Michael Sheridan

        All the file-effecting ransomware I have seen either changes the files extension or jumbles the internal text. So doesn’t this mean that you could find old unencrypted version in either the files history or the recycle bin?

    • LodeHere

      I make a system backup now and then, saved also on an external drive. But before I do that I always do a threat scan with EAM. I don’t want to make a backup of something that already has malware in it…

      But that is on 1 personal notebook with not all that much stuff on it. (Whatever I think important I also have on a memory stick and another external drive.)

      A company with a huge amount of data might have to do something different, like at least save backups daily, or even more frequently. Like backing up all new data all the time. And saving it on something much larger than what I’m using.

      But I don’t know anything about that, so just fantasizing… : )

  • There’s certainly a few lessons in that story. Good on you guys for saving the day.

  • Jaklo

    An excellent result Emsisoft. I wish that all the people I know would stop believing that their free anti-virus programs keeps their computers 100% secure from every ‘nasty’ intrusion there is. (and probably others in the future)
    Also thanks to CloudEight for promoting Emsisoft.

  • TVMan

    Great read. I really like all the security articles published here. With Emsisoft, I know what I read is accurate. Thanks, guys!

  • Max

    Great job by Emsisoft and Mr Fabian Wosar who also helped me to recover my data when I was hit by Radamant Ransomeware which name I’ll never forget.

  • Hoggimus Doggimus

    I really wish you had explained a the gibberish jargon term “NAS.” That means “Naval Air Station” which makes no sense at all in this context. By not deciphering the gibberish, you good folks rendered the article essentially meaningless to most of us. So why bother posting it? You could have saved a lot of time & effort by just posting “Emsisoft is good” and let it go at that.

    • Monika (Emsisoft)

      Happy to clear that up for you: NAS stands for “Network Attached Storage” and is basically a server that contains one ore more hard drives (storage devices) and is connected via network (thus network attached). We will keep an eye out for those abbreviations, thanks for the hint!

      Here is an in-depth explanation, if you’re interested: https://en.wikipedia.org/wiki/Network-attached_storage

      • cma6

        If one had a local external HD backup, connected to system only during backup, would that not be safe against ransonmware?

    • BigVarn

      If only there was some way to search for information that didn’t involve laboriously leafing through book after book…
      Hmm, maybe there should be a world-wide body that authorises acronyms so that there’s no confusion between terms; so that everyone knows that NAS *always* means Naval Air Station and nothing else whatsoever. Also, words should be restricted to single use as well – none of that synonym nonsense! While we’re at it, get rid of homonyms as well – let’s really clean things up: your/you’re/yore/yaw – all got to go, it’s just too confusing!

    • Are you aware of the freely available Google website? Quite handy for learning new things. Off course it does require a adequate brain activity. Enjoy.

  • David Pilibosian

    FreeNas, archival incremental and built for off-site replication, you really can’t ask for a better nas.

  • Comment Zilla

    How does all of this file activity go unnoticed?