Cryptocurrency Crime: The Internets New Wild West

The popularity of Bitcoin and other cryptocurrencies has opened the floodgates to different cybercrimes, scams and outright theft. A pair of reports from Cisco and Digital Shadows paints a portrait of this new Wild West of the Internet.

In many ways cryptocurrency crime resembles the new Wild West, with several different gangs of rogue gunslingers looking for a haul. These bandits use new techniques to illegally harness the computer power of users, mine currency and rob wallets.
In many ways, its like the Gold Rush of the 1840s as people flood to the opportunities that cryptocurrencies present and are preyed on by criminals and the unscrupulous, said Rick Holland, vice president strategy at Digital Shadows, a San Francisco-based digital risk management and threat intelligence firm.
And, when ransoming their victims becomes too risky, these groups ride into town to recruit other suckers to do their bidding. Cryptojacking is growing in popularity not just because cryptocurrencies are booming, but because its also a safer option for extorting funds than ransomware. (See
Cryptomining: Paying the Price for Cryptocurrency
.)
Illegal cryptocurrency mining is now on the increase because hackers can realize an excellent financial upside versus ransomware without the risk of even engaging the victim, according to the latest
Cisco Talos report
.
(Source:
Vjombajn via Pixabay
)
Along with a marked increase in the volume of cryptocurrency mining software being maliciously delivered to victims, Talos notes that mining is more productive for malicious users because it is not, like ransomware, a one-off attack. (See
Rogue Employees Mine Cryptocurrency Using Company Hardware
.)
IOT devices, with their lack of monitoring and lack of day-to-day user engagement, are fast becoming an attractive target for these attackers, as they offer processing power without direct victim oversight, according to Cisco Talos. The report also noted that although the processing power per device is likely relatively small, the number of publicly exposed devices is high, making the equation profitable for those looking for less risk than ransomware.
An average system can mine Monero to the equivalent of $0.25 a day, and in Ciscos estimation, someone enlisting 2,000 victims -- described as not a hard feat -- would generate $500 a day, or $182,500 annually -- bearing in mind that currency values are volatile at the moment.
Botnets, which perform the number crunching, are becoming easier to access thanks to rent a bot schemes on the Dark Web, and Talos has observed millions of infected systems which could theoretically be used to net tens of millions of dollars by groups or individuals with relatively little effort.
Not only that, but because infections can go unnoticed, mining provides a sustainable income stream, not just a one-off hit. Theft of computing power can go unnoticed by users and most mining software, such as CoinHive, JSEcoin, and Crypto-Loot is not technically considered malware.
Coinhoarder group
Cryptojacking is not the only method of stealing from everyday users. One example is the so-called Coinhoarder group, a Ukrainian hacking organization which has been mining Bitcoin since at least 2015.
Cisco has been tracking them for the last six months hand-in-hand with a specialist Ukrainian cyberpolice unit, revealing that the group has to date stolen an estimated tens of millions of dollars in cryptocurrency by using Google Adwords to poison everyday users search results, and steal directly from their wallets.
The group emerged into the spotlight after a campaign in February 2017 that targeted blockchain.info, a popular Bitcoin wallet site. Alarm bells rang after about 200,000 client queries pinged the site in a single day, after the group had placed phishing links in Google Adwords such as blockchain and bitcoin wallet.
These spoofed links, when clicked, would redirect to a regionalized landing page based on the users IP address, where phishing content was served up.
Using the attackers Bitcoin wallet address, Cisco and law enforcement spotted that between September and December last year, about $10 million was stolen. In one campaign, $2 million was netted in under a month.
Cisco estimates the Coinhoarder group has gained north of $50 million in total over three years, proving how lucrative this activity is becoming, and some would say more successful in pure money terms than ransomware.
Taking people for a ride
Like in the Pioneer Days, people do not remain fools for too long. There are no visible criminals for the population to tar and feather, but even so, hackers are staying nimble by deploying new techniques and software hybrids that take cryptocurrency crime to the next level.
These not only include a rash of cryptomining and currency value pump and dump schemes, but also botnet rental and fake Initial Coin Offerings (ICOs), according to a new report from
Digital Shadows
.
This is a rapidly changing space and we see new scams crop up daily, said Digital Shadows Holland. While the future of cryptocurrencies remains somewhat uncertain, what we can be sure of is that cybercriminals will continue to find new ways of making money.
Holland emphasizes that the growth of botnets-for-rent and the weaponization of mining tools available on the black market at low price points is further accelerating crypto crime. Digital Shadows has observed one such botnet-for-rent priced at $40 which has already been rented 2,000 times.
One example of weaponization that looks particularly powerful is a new cryptojacker which combines CoinHive, Authedmine and Crypto-Loot into a Word Press plugin with added SEO functionality. Priced at $29, the software has been available illicitly since November last year and essentially clones popular websites which are then leveraged in spam campaigns.
In some instances, criminals have become as brazen as soap bar salesmen by creating their own bogus cryptocurrencies as fake ICOs, duping investors to come on board, pumping the value, and then leaving them with nothing but the detergent.
Related posts:
Ransomware Shows Theres no Honor Among Cyberthieves
Countries, Coins & Cloud Will Test Enterprise Security in 2018
Bitcoin Attacks Mount as Criminals & States Seek Targets
— Simon Marshall, Technology Journalist, special to Security Now

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