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8/30/2018
05:30 PM
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Cryptocurrency Scams Replacing Ransomware as Attackers' Fave

Cryptojacking miners and fileless malware see biggest growth in first half of 2018.

The incidence of cryptocurrency mining malware continues to skyrocket as the bad guys refocus their efforts away from ransomware in favor of the easy money that cryptocurrency offers them. The latest evidence of the trend came by way of a new report, released earlier this week, that examined attack data for the first half of 2018. 

Cryptojacking numbers dominated the report's highlights, as researchers from Trend Micro showed that the volume of cryptomining attacks for the first half of the year was almost double the number of similar attacks during all of 2017. Comparing like-for-like, the cryptocurrency mining detections increased more than ninefold in the first half of 2018 compared with the first half of 2017. Meantime, the number of ransomware families declined 26% in this year's first half compared with the second half of last year. In addition, ransomware growth slowed considerably, only inching forward by about 3% from the first half of the year compared with the last half of 2017

"The recent change in the threat landscape mirrors what we've seen for years – cybercriminals will constantly shift their tools, tactics, and procedures to improve their infection rates,” said Jon Clay, director of global threat communications for Trend Micro, in a statement.

Meantime, the report showed that unusual malware types, such as fileless, small-file, and macro malware, are all seeing significant upticks. This corresponds to a different report out this week from SentinelOne that shows fileless attacks rose 94% in the first half of 2018.

And, in fact, the trends of fileless malware and cryptocurrency mining malware have been seen to cross over as of late.  

Late last month, researchers with Kaspersky reported the growing prevalence of PowerGhost, a fileless malware family that preys on corporate networks to siphon their machines' compute power. As they explained, PowerGhost creators combine the cryptojacking capability of any other malicious miner with the super stealthy characteristics of a fileless malware.

Like any miner, PowerGhost uses your computing resources to generate cryptocurrency. This reduces server and other device performance, as well as significantly accelerates wear and tear, which leads to replacement costs. 

However, compared with most such programs, PowerGhost is more difficult to detect because it doesn't download malicious files to the device.

Some experts believe we will see more cryptomining botnets trending in this direction, as corporate systems and networks tend to offer attacker a veritable open buffet of compute power once they can find a way to ingratiate their malware onto machines. 

"The latest PowerGhost malware shows there is renewed interest in creating botnets from enterprise workstations and servers," explained Sean Newman, director of product management at Corero Network Security, earlier this month.

He said this is in contrast to a lot of recent botnet attack activity around IoT devices. "With the significantly higher-powered CPUs in these devices, compared to IoT, it's not surprising that they are now the target for compute-intensive cryptomining activities," he added.

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Ericka Chickowski specializes in coverage of information technology and business innovation. She has focused on information security for the better part of a decade and regularly writes about the security industry as a contributor to Dark Reading.  View Full Bio
 

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colad1930
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colad1930,
User Rank: Strategist
9/2/2018 | 3:40:11 AM
Re: Smartcric Pendulum
Yes sir, agree with your say, spam is not an option and we are not still prepared to take and control Ransomware. Innovation is a must to be done thing to protect from smartcric ransomware.
Joe Stanganelli
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Joe Stanganelli,
User Rank: Ninja
8/30/2018 | 11:51:53 PM
Pendulum
There's definitely been a big turn over the past so-many years. The spam business isn't what it used to be, allowing ransomware to really take off as a business model. The pendulum appears to be swinging back to the parasitic approach to malicious hacking as these bad actors realize that they may get more bang for their buck (and risk profile) in the long run via cryptojacking.
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