Cryptominers Remain Top Threat but Coinhives Exit Could Change That

Coinhive has remained on top of Check Point Softwares global threat index for 15 straight months.

Cryptominers continue to dominate the malware landscape, just as they did all of 2018. But a
decision
by cryptocurrency mining service Coinhive to shut down last week could change that soon, security vendor Check Point Software said in its latest malware threat report, released Monday.
Coinhive has topped Check Points global threat index for 15 straight months, including this February.
Coinhives software is designed to give website owners a way to earn revenue by using the browsers of site visitors to mine for Monero cryptocurrency. The software itself — like many other cryptominers — is not malicious. However, cybercriminals have been using Coinhive extensively to surreptitiously mine for Monero on hacked websites, making it a top threat to website operators globally in the process. Many websites that have installed Coinhive also have done so without explicitly informing site visitors about it.
For now, I assume that Coinhives shutdown will only cause its disappearance from the top 10 list, says Maya Horowitz, threat intelligence and research director at Check Point. Other coin-mining tools will likely remain a threat or become more widely distributed as criminals start using those tools instead of Coinhive, she says. Check Points report shows that at least two other coin miners — Cryptoloot and Authedmine — moved up in the top 10 malware rankings last month, compared with January 2019.
However, the declining values overall of major cryptocurrencies (such as Monero and bitcoin) could soon begin affecting the will of threat actors to use miners, Horowitz notes. This could result in fewer cryptomining attacks overall and a greater focus by threat actors on more lucrative targets such as scalable cloud environments. Attackers could also start finding new, yet unknown, paths to monetize on their attacks, Horowitz says.
In a
blog post
last Friday, security vendor Avast said Coinhives decision to discontinue its service is not entirely surprising given the declining value of cryptocurrencies and the fact that security vendors were routinely blocking the software because of misuse.
The big question now is whether or not browser-based cryptojacking will decline altogether or whether some other crypto tool will rise to replace Coinhive. Ultimately, Coinhive going out of business is a good thing for security, privacy, and transparency, according to the Avast blog post.
Totally, five of top threats in Check Points global index currently are cryptomining-related. The other threats in the index include the GandCrab ransomware tool and two banking Trojans that have been around for some time — Ramnit and Emotet.
According
to Check Point, its researchers have observed several campaigns distributing a new version of GandCrab widely in Canada, Germany, Japan, and Australia. The new version incorporates a key encryption change that renders ineffective a decryption tool that was developed for previous versions of the malware, Check Point said. One reason for GandCrabs growing popularity is the fact that the ransomware is offered as a service and is thus easily available to attackers, Horowitz says.
Check Points report also shows that the most actively targeted vulnerabilities last month were once again issues that were disclosed and patched some time ago. One of the vulnerabilities in February, for instance, was an information disclosure flaw in Open SSL (
CVE-2014-0160
;
CVE-2014-0346
) that was first disclosed and patched in 2014.
Threat actors often use the least sophisticated solution that would work, Horowitz says. So as long as many users do not patch their servers for these vulnerabilities, they would keep exploiting them. Our yearly security report demonstrates that only a third of the attacks during 2018 exploited vulnerabilities disclosed in 2017–2018, she says.
Related Content:
In 2019, Cryptomining Just Might Have an Even Better Year
5 Steps to Fight Unauthorized Cryptomining
When Cryptocurrency Falls, What Happens to Cryptominers?
7 Cryptominers & Cryptomining Botnets You Cant Ignore

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Cryptominers Remain Top Threat but Coinhives Exit Could Change That