Kaspersky Lab researchers have discovered a malware targeting ATMs, which was being sold on the DarkNet market.
Cutlet Maker consists of three components and enables ATM jackpotting if the attacker is able to gain physical access to the machine. A toolset potentially allowing criminals to steal millions was on sale for just 5000 dollars and came equipped with a step-by-step user guide.
ATMs continue to be lucrative targets for fraudsters, who use various methods to extract maximum profit. While some rely on physically destructive methods through the use of metal cutting tools, others choose malware infection, enabling them to manipulate cash dispensers from the inside. Although malicious tools for hacking ATMs have been known for many years, the latest discovery shows that malware creators are investing more and more resources into making their “products” available for criminals who are not very familiar with computer science.
Earlier this year, a Kaspersky Lab partner provided one of our researchers with a previously unknown malicious sample presumably made to infect PCs running inside ATMs. Researchers were curious to see if this malware or something related to it was available to purchase on underground forums. A subsequent search for the unique artifacts of the malware was successful: an advertising offer describing a strain of ATM malware on a popular DarkNet spot – AlphaBay – matched the search query and revealed that the initial sample belonged to a whole commercial malware-kit created to jackpot ATMs. A public post by the malware seller, found by researchers, contained not only the description of the malware and instructions on how to get it, but also provided a detailed step-by-step guide on how to use the malware-kit in attacks, with instructions and video tutorials.
According to the research, the malware toolkit consists of three elements:
- Cutlet Maker software, which serves as the main module responsible for communicating with the ATM’s dispenser.
- c0decalc program, designed to generate a password in order to run the Cutlet Maker application and protect it from unauthorised use.
- Stimulator application, which saves time for criminals by identifying the current status of ATM cash cassettes. By installing this app, an intruder receives exact information on the currency, value and number of notes in each cassette, so can then choose the one containing the largest amount, instead of blindly withdrawing cash one by one.
To begin the theft, criminals need to gain direct access to an ATM’s insides in order to access the USB port, which is used to upload the malware. If successful, they plug in a USB device which stores the software toolkit. As a first step, criminals install Cutlet Maker. Since it is password protected they use a c0decalc program, installed on another device such as a laptop or tablet – this is a kind of “copyright” protection installed by authors of Cutlet Maker in order to prevent other criminals from using it for free. After the code is generated, criminals enter it into Cutler Maker’s interface to start the money removal process.
Cutlet Maker had been on sale since 27 Mar 2017, however as researchers discovered, the earliest known sample came on the radars of the security community in June 2016. At that time, it was submitted to a public multi-scanner service from Ukraine, but later submissions from other countries were also made. It is not clear if the malware was used in actual in the wild attacks, however the guidelines that came with the malware kit contained videos which were presented by their authors as real-life proof of the malware’s efficiency.
It is unknown who is behind this malware. Regarding potential sellers of the toolkit, language, grammar and stylistic mistakes point to the fact they are non-native English speakers.
“Cutlet Maker requires almost no advanced knowledge or professional computer skills from the criminal, transforming ATM hacking from a sophisticated offensive cyber operation into yet another illegal way to earn money that is available to practically anyone who has several thousand dollars to purchase the malware. This may potentially become a dangerous threat to financial organisations. But what is more important is that while operating, Cutlet Maker interacts with the ATMs software and hardware, encountering almost no security obstacles at all. This should be changed in order to harden ATM machines,” says Konstantin Zykov, security researcher at Kaspersky Lab.
In order to protect ATMs from attacks with the help of malicious tools like Cutlet Maker and in addition to providing reliable physical security to ATMs, Kaspersky Lab specialists advise financial organisations security teams to do the following:
- Implement strict default-deny policies preventing any unauthorised software from running on the ATM.
- Enable device control mechanisms to restrict the connection of any unauthorised devices to the ATM.
- Use a tailored security solution to protect your ATMs from attacks from the likes of the Cutlet Maker malware.
For better ATM protection Kaspersky Lab also recommends using a proper security solution, such as Kaspersky Embedded Systems Security.
Kaspersky Lab products successfully detect and block the Cutlet Maker malware.
To read more about how Cutlet Maker works, read the recent blogpost on Securelist.com.
This analysis continues Kaspersky Lab’s ongoing research into financial malwar
Cons exploit Telegram ICO
Kaspersky Lab researchers have uncovered dozens of highly convincing fake websites claiming to be investment sites for an initial coin offering (ICO) by the Telegram messaging service. Many of these websites appear to belong to the same group. In one case alone, tens of thousands of US dollars’ worth of cryptocurrency were stolen from victims believing they were investing in ‘Grams’, Telegram’s rumoured new currency. Telegram has not officially confirmed an ICO and has warned people about fraudulent investor sites.
In late 2017, stories started to circulate that the Telegram messaging service was launching an initial coin offering (ICO) to finance a blockchain platform based on its TON (Telegram Open Network) technology. Unverified technical documentation was posted online, but there appears to have been no confirmation from Telegram itself. The resulting confusion seems to have allowed fraudsters to capitalise on investor interest by creating fake sites and stealing vast sums of money.
Kaspersky Lab researchers have discovered dozens of such sites, possibly belonging to the same group, claiming to sell tokens for ‘Grams’ and inviting investors to pay with cryptocurrencies including Bitcoin, Ethereum, lice litecoin, dash and Bitcoin dash. A record of transactions on one site revealed that the scammers were able to steal at least $35,000 US dollars’ worth of Ethereum from investors.
The researchers found that some of the websites were so convincing that even after Telegram and others began to issue warnings, they were still able to recruit potential investors. Most use a secure connection, require registration and generate a unique online wallet for each new victim, making it harder to track the money.
Judging by the content of the fake websites, it appears they may have common ownership. For example, several have the exactly the same ‘Our Team’ section.
“ICOs are a fairly risky investment and many people don’t yet fully understand how they work, so it is not surprising that high quality fake websites, with seemingly reassuring features such as a secure connection and registration are successful at luring people in. People wishing to invest in an ICO would do well to check with the company behind it and make sure they know exactly who they are giving their money to, or they may never see it again,” said Nadezhda Demidova, Lead Web-Content Analyst, Kaspersky Lab.
Kaspersky Lab offers the following advice for users considering investing in an ICO:
- Check for warning signs: for example, some of the fake Telegram ICO websites had the same wrong image next to the name of Telegram’s Chief Product Officer.
- Do your homework: always check with the brand’s official site to verify the legitimacy of the investment site and, if necessary contact the company’s ICO teams before investing any money or currency.
- Use reliable security solutions such as Kaspersky Internet Security and Kaspersky Internet Security for Android, which will warn you if you try to visit fake internet pages.
Crouching Yeti strikes
Kaspersky Lab has uncovered infrastructure used by the Russian-speaking APT group Crouching Yeti, also known as Energetic Bear, which includes compromised servers across the world.
According to the research, numerous servers in different countries were hit since 2016, sometimes in order to gain access to other resources. Others, including those hosting Russian websites, were used as watering holes.
Crouching Yeti is a Russian-speaking advanced persistent threat (APT) group that Kaspersky Lab has been tracking since 2010. It is best known for targeting industrial sectors around the world, with a primary focus on energy facilities, for the main purpose of stealing valuable data from victim systems. One of the techniques the group has been widely using is through watering hole attacks: the attackers injected websites with a link redirecting visitors to a malicious server.
Recently Kaspersky Lab has discovered a number of servers, compromised by the group, belonging to different organisations based in Russia, the U.S., Turkey and European countries, and not limited to industrial companies. According to researchers, they were hit in 2016 and 2017 with different purposes. Thus, besides watering hole, in some cases they were used as intermediaries to conduct attacks on other resources.
In the process of analysing infected servers, researchers identified numerous websites and servers used by organisations in Russia, U.S., Europe, Asia and Latin America that the attackers had scanned with various tools, possibly to find a server that could be used to establish a foothold for hosting the attackers’ tools and to subsequently develop an attack. Some of the sites scanned may have been of interest to the attackers as candidates for waterhole. The range of websites and servers that captured the attention of the intruders is extensive. Kaspersky Lab researchers found that the attackers had scanned numerous websites of different types, including online stores and services, public organisations, NGOs, manufacturing, etc.
Also, experts found that the group used publicly available malicious tools, designed for analyzing servers, and for seeking out and collecting information. In addition, a modified sshd file with a preinstalled backdoor was discovered. This was used to replace the original file and could be authorised with a ‘master password’.
“Crouching Yeti is a notorious Russian-speaking group that has been active for many years and is still successfully targeting industrial organisations through watering hole attacks, among other techniques. Our findings show that the group compromised servers not only for establishing watering holes, but also for further scanning, and they actively used open-sourced tools that made it much harder to identify them afterwards,” said Vladimir Dashchenko, Head of Vulnerability Research Group at Kaspersky Lab ICS CERT.
“The group’s activities, such as initial data collection, the theft of authentication data, and the scanning of resources, are used to launch further attacks. The diversity of infected servers and scanned resources suggests the group may operate in the interests of the third parties,” he added.
Kaspersky Lab recommends that organisations implement a comprehensive framework against advanced threats comprising of dedicated security solutions for targeted attack detection and incident response, along with expert services and threat intelligence. As a part of Kaspersky Threat Management and Defense, our anti-targeted attack platform detects an attack at early stages by analysing suspicious network activity, while Kaspersky EDR brings improved endpoint visibility, investigation capabilities and response automation. These are enhanced with global threat intelligence and Kaspersky Lab’s expert services with specialisation in threat hunting and incident response.
More details on this recent Crouching Yeti activity can be found on the Kaspersky Lab ICS CERT website.