SonicWall, a leading perimeter security vendor, issued a mid-year update to its annual threat report in July. Amid the global disruption caused by the coronavirus pandemic some threat trends are surprising:
- The number of malware attacks is down by 33%.
- The instances of ransomware are up globally by 20%, but over 100% in the US.
- Office files (Word, Excel, and PDF) continue to be used primarily for malicious intent.
There was a huge spike of IoT malware — up as much as 50%.
Also noted, but not at all surprising: Cybercriminals are increasingly targeting the large number of employees who are working from home.
Cybercrime has increased since the start of the pandemic, and the latest targets now include medical facilities, hospitals, and research labs. These focused attacks have two purposes: First, to disrupt normal business and day-to-day activity; second, to obtain research data related to potential vaccines and coronavirus solutions. Nation states – most likely China, Russia, and North Korea – are very interested in obtaining intellectual property. Based on these attacks, it appears to be far easier for these cybercriminals to steal someone else’s work than to do their own.
New, never-before-seen malware variants found in the first half of 2020 increased by more than 60%. This occurred despite the overall decline in the number of malware attacks. From this, we surmise cybercriminals are experimenting to see what version can effectively get through normal defenses.
In the first half of 2020, Office files and PDFs comprised one third of all new malicious files. One of the key takeaways from the analysis of these files is that “threats are becoming more evasive and more nefarious.”
However, ransomware is on the rise. By way of contrast, global ransomware rose 15% in all of 2019. In the first half of this year, despite a global pandemic that constrained most business activity in the second quarter, it is up 20%.
The report notes a very strong correlation between where the coronavirus hit and when ransomware attacks occurred. Looking closely at the numbers, I believe this trend will continue, and the United States is going to experience more cybercrime during the next few months until the rest of the country (particularly the South and West) reduce the number of infections.
One of the scariest aspects of these recent attacks is summarized as follows:
“To make matters worse, many ransomware operators have taken to selling or otherwise releasing company data if the organization refuses to or cannot pay.
“Even for companies that cooperate with the criminals’ demands, the trouble often doesn’t stop when the ransom is paid. Many organizations pay the ransoms, only to find their files are irretrievably corrupted or have been wiped out altogether. Ransomware attacks are so devastating that they’ve forced a number of companies out of business.”
Here is an analogy to put that in perspective. A stranger breaks into your house, steals some of your belongings, and contacts you, offering to sell them back. You agree, and after the items are returned, you find they are damaged beyond repair. Worse, some of the personal documents you kept in your desk drawer have been published on the internet so that everyone can see your financial position. You, as an individual, would be mortified. When this happens to a small business, the consequences are enormous.
In terms of IoT – devices that connect to the internet to provide various services – the first six months of 2020 saw twice the number of attacks as 2019. The report forecasts that the end of the year may show numbers surpassing the combined values of 2018 and 2019.
In the consumer space, IoT devices include: Amazon Echo, Nest smoke alarm, Ring doorbell, various home security systems, smart TVs, and even smart refrigerators. http://iotlineup.com has an extensive list.
In the business environment, IoT devices include: smart locks, smart video cameras, and smart lights and energy management. These components comprise all the security elements of typical building management functions.
What’s the motivation of cybercriminals to attack these devices? They are looking for a “back door” into networks with lower chances of detection so they can deploy other forms of malicious software to compromise the computers on that network. It is essential for both the IoT device manufacturers and people who use them to insist that security considerations should be top of mind for all new devices (older ones are unlikely to be retrofitted).
I don’t think have made any mention of Coinhive in recent editions because I knew it had been shut down in early 2019. But just to recap: Coinhive was a cryptocurrency mining service that installed software in a computer’s web browser to exploit that computer’s resources to mine bits of the cybercurrency, Monero.
In 2020, as if there wasn’t enough anguish, there is a replacement called XMRig, another Monero cryptominer. In June, the US Cybersecurity and Infrastructure Security Agency (CISA) announced that XMRig was among the three signatures that make up 90% of potential threats.
So, there you have it. From SonicWall’s perspective, we were not even half-way through the year and things were already looking pretty dicey from a security standpoint. There is general consensus among security companies that attacks will only increase, and as the coronavirus continues to beat down United States businesses, along with the disruption from the upcoming presidential election, the cybercriminals are not going to stand idly by. They are going to take full advantage of the turmoil, and they will exploit it to the best of their ability.
Thanks, and safe computing!
