Feeds

Crooks use Synology NAS boxen to mine Dogecoin, yells Dell

US$620,000 snatched by German hacker 'Folio', we're told

Secure remote control for conventional and virtual desktops

Dell says skilled attackers have made a staggering $620,000 in the Dogecoin crypto-currency by exploiting vulnerable Synology network attached storage (NAS) boxes.

The clever hackers pulled off the largest heist of its kind by planting mining gear on the NAS boxes to borrow their computational might - many NAS now boast grunty multi-core CPUs - to seek out coins.

Scores of unpatched Synology boxes were infected and continued to mine Dogecoins for the assailants.

It took just two months for the attackers to accrue 500 million coins worth US$620,000, Dell Secureworks researcher Pat Litke (@LitkeP) wrote in a post.

"To date, this incident is the single most profitable, illegitimate mining operation," Litke wrote. "

"This conclusion is based in part on prior investigations and research done by [Secureworks], as well as further searching of the internet."

Secureworks' analysis suggests an experienced hacker, likely of German descent and using the alias Folio, was behind the Dogecoin mining spree.

In a brazen stunt, Folio stored the mining gear in a folder labelled PWNED, a move that could have foiled the plans earlier should forum warnings have been reported by the press.

Users first reported the attacks on web forums in February after noticing the folder and a drop in NAS performance due to the resource-sucking mining operation.

While the coin mining was not itself illegal, the act of hacking the NAS boxes and pilfering their compute resources was.

Yet users remained vulnerable to a string of more dangerous attacks due to the five-month-long exposure of Synology NASes to very serious vulnerabilities within the Linux-based DiskStation Manager. These included unauthenticated remote file downloading and a command-injection flaw.

Vulnerable servers could be found using only an advanced Google search (Google dorking) with keywords which could drop attackers right into exposed Synology NASes.

"Back in October of 2013, simply Googling for 'site:Synology.me' resulted in excess of one million results ... by going to 'something.Synology.me', the user is routed directly to their NAS," Litke said.

Awareness of the flaws grew and by March this year the SANS internet storm centre reported a spike in scans against port 5000 which was the default listener for Synology NASes.

The Reg approached Synology for comment, but the company had not replied as this article went to press. ®

Updated to add

A Synology spokesman has got in touch to say: "In September, under DSM [DiskStation Manager] 4.3 and 4.2, we were alerted to the Bitcoin and Dogecoin-mining malware. On September 23, our developers squashed the bug for those who updated their DSM.

"In February, we released a patch for DSM 5.0beta to resolve the issue. In February we also started getting a lot of support tickets for mining that happened on units that had not updated their DSM. The result: we made auto-updates the default behavior for the OS. We’ve been updating regularly, because we are now targets."

Secure remote control for conventional and virtual desktops

More from The Register

next story
'Regin': The 'New Stuxnet' spook-grade SOFTWARE WEAPON described
'A degree of technical competence rarely seen'
You really need to do some tech support for Aunty Agnes
Free anti-virus software, expires, stops updating and p0wns the world
Regin: The super-spyware the security industry has been silent about
NSA fingered as likely source of complex malware family
You stupid BRICK! PCs running Avast AV can't handle Windows fixes
Fix issued, fingers pointed, forums in flames
Privacy bods offer GOV SPY VICTIMS a FREE SPYWARE SNIFFER
Looks for gov malware that evades most antivirus
Patch NOW! Microsoft slings emergency bug fix at Windows admins
Vulnerability promotes lusers to domain overlords ... oops
HACKERS can DELETE SURVEILLANCE DVRS remotely – report
Hikvision devices wide open to hacking, claim securobods
prev story

Whitepapers

Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
Go beyond APM with real-time IT operations analytics
How IT operations teams can harness the wealth of wire data already flowing through their environment for real-time operational intelligence.
How to determine if cloud backup is right for your servers
Two key factors, technical feasibility and TCO economics, that backup and IT operations managers should consider when assessing cloud backup.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?