Posts Tagged: Blackshades RAT


13
Nov 19

Orcus RAT Author Charged in Malware Scheme

In July 2016, KrebsOnSecurity published a story identifying a Toronto man as the author of the Orcus RAT, a software product that’s been marketed on underground forums and used in countless malware attacks since its creation in 2015. This week, Canadian authorities criminally charged him with orchestrating an international malware scheme.

An advertisement for Orcus RAT.

The accused, 36-year-old John “Armada” Revesz, has maintained that Orcus is a legitimate “Remote Administration Tool” aimed at helping system administrators remotely manage their computers, and that he’s not responsible for how licensed customers use his product.

In my 2016 piece, however, several sources noted that Armada and his team were marketing it more like a Remote Access Trojan, providing ongoing technical support and help to customers who’d purchased Orcus but were having trouble figuring out how to infect new machines or hide their activities online.

Follow-up reporting revealed that the list of features and plugins advertised for Orcus includes functionality that goes significantly beyond what one might see in a traditional remote administration tool, such as DDoS-for-hire capabilities, and the ability to disable the light indicator on webcams so as not to alert the target that the RAT is active.

Canadian investigators don’t appear to be buying Revesz’ claims. On Monday the Royal Canadian Mounted Police (RCMP) announced it had charged Revesz with operating an international malware distribution scheme under the company name “Orcus Technologies.”

“An RCMP criminal investigation began in July 2016 after reports of a significant amount of computers were being infected with a ‘Remote Access Trojan’ type of virus,” the agency said in a statement.

The RCMP filed the charges eight months after executing a search warrant at Revesz’ home, where they seized several hard drives containing Orcus RAT customer names, financial transactions, and other information.

“The evidence obtained shows that this virus has infected computers from around the world, making thousands of victims in multiple countries,” the RCMP said.

Revesz did not respond to requests for comment. Continue reading →


22
Apr 19

Who’s Behind the RevCode WebMonitor RAT?

The owner of a Swedish company behind a popular remote administration tool (RAT) implicated in thousands of malware attacks shares the same name as a Swedish man who pleaded guilty in 2015 to co-creating the Blackshades RAT, a similar product that was used to infect more than half a million computers with malware, KrebsOnSecurity has learned.

An advertisement for RevCode WebMonitor.

At issue is a program called “WebMonitor,” which was designed to allow users to remotely control a computer (or multiple machines) via a Web browser. The makers of WebMonitor, a company in Sweden called “RevCode,” say their product is legal and legitimate software “that helps firms and personal users handle the security of owned devices.”

But critics say WebMonitor is far more likely to be deployed on “pwned” devices, or those that are surreptitiously hacked. The software is broadly classified as malware by most antivirus companies, likely thanks to an advertised feature list that includes dumping the remote computer’s temporary memory; retrieving passwords from dozens of email programs; snarfing the target’s Wi-Fi credentials; and viewing the target’s Webcam.

In a writeup on WebMonitor published in April 2018, researchers from security firm Palo Alto Networks noted that the product has been primarily advertised on underground hacking forums, and that its developers promoted several qualities of the software likely to appeal to cybercriminals looking to secretly compromise PCs.

For example, RevCode’s website touted the software’s compatibility with all “crypters,” software that can encrypt, obfuscate and manipulate malware to make it harder to detect by antivirus programs. Palo Alto also noted WebMonitor includes the option to suppress any notification boxes that may pop up when the RAT is being installed on a computer.

A screenshot of the WebMonitor builder panel.

RevCode maintains it is a legitimate company officially registered in Sweden that obeys all applicable Swedish laws. A few hours of searching online turned up an interesting record at Ratsit AB, a credit information service based in Sweden. That record indicates RevCode is owned by 28-year-old Swedish resident Alex Yücel.

In February 2015, a then 24-year-old Alex Yücel pleaded guilty in a U.S. court to computer hacking and to creating, marketing and selling Blackshades, a RAT that was used to compromise and spy on hundreds of thousands of computers. Arrested in Moldova in 2013 as part of a large-scale, international takedown against Blackshades and hundreds of customers, Yücel became the first person ever to be extradited from Moldova to the United States. Continue reading →


4
Apr 17

Dual-Use Software Criminal Case Not So Novel

“He built a piece of software. That tool was pirated and abused by hackers. Now the feds want him to pay for the computer crooks’ crimes.”

The above snippet is the subhead of a story published last month by the The Daily Beast titled, “FBI Arrests Hacker Who Hacked No One.” The subject of that piece — a 26-year-old American named Taylor Huddleston — faces felony hacking charges connected to two computer programs he authored and sold: An anti-piracy product called Net Seal, and a Remote Administration Tool (RAT) called NanoCore that he says was a benign program designed to help users remotely administer their computers.

Photo illustration by Lyne Lucien/The Daily Beast

Photo illustration by Lyne Lucien/The Daily Beast

The author of the Daily Beast story, former black hat hacker and Wired.com editor Kevin Poulsen, argues that Huddleston’s case raises a novel question: When is a programmer criminally responsible for the actions of his users?

“Some experts say [the case] could have far reaching implications for developers, particularly those working on new technologies that criminals might adopt in unforeseeable ways,” Poulsen wrote.

But a closer look at the government’s side of the story — as well as public postings left behind by the accused and his alleged accomplices — paints a more complex and nuanced picture that suggests this may not be the case to raise that specific legal question in any meaningful way.

Mark Rumold, senior staff attorney at the Electronic Frontier Foundation (EFF), said cases like these are not so cut-and-dry because they hinge on intent, and determining who knew what and when.

“I don’t read the government’s complaint as making the case that selling some type of RAT is illegal, and if that were the case I think we would be very interested in this,” Rumold said. “Whether or not [the government’s] claims are valid is going to be extraordinarily fact-specific, but unfortunately there is not a precise set of facts that would push this case from being about the valid reselling of a tool that no one questions can be done legally to crossing that threshold of engaging in a criminal conspiracy.”

Citing group chat logs and other evidence that hasn’t yet been made public, U.S. prosecutors say Huddleston intended NanoCore to function more like a Remote Access Trojan used to remotely control compromised PCs, and they’ve indicted Huddleston on criminal charges of conspiracy as well as aiding and abetting computer intrusions.

Poulsen depicts Huddleston as an ambitious — if extremely naive — programmer struggling to make an honest living selling what is essentially a dual-use software product. Using the nickname “Aeonhack,” Huddleston marketed his NanoCore RAT on Hackforums[dot]net, an English-language hacking forum that is overrun with young, impressionable but otherwise low-skilled hackers who are constantly looking for point-and-click tools and services that can help them demonstrate their supposed hacking prowess.

Yet we’re told that Huddleston was positively shocked to discover that many buyers on the forum were using his tools in a less-than-legal manner, and that in response he chastised and even penalized customers who did so. By way of example, Poulsen writes that Huddleston routinely used his Net Seal program to revoke the software licenses for customers who boasted online about using his NanoCore RAT illegally.

We later learn that — despite Net Seal’s copy protection abilities — denizens of Hackforums were able to pirate copies of NanoCore and spread it far and wide in malware and phishing campaigns. Eventually, Huddleston said he grew weary of all the drama and sold both programs to another Hackforums member, using the $60,000 or so in proceeds to move out of the rusty trailer he and his girlfriend shared and buy a house in a low-income corner of Hot Springs, Arkansas.

From the story:

Continue reading →