Cryptocurrency malware, a relatively new cyber threat, has received a lot of attention in recent years. Amazingly, over 300 million cryptocurrency threats were recorded in the first half of 2023 alone, a 400% increase compared to the same period in 2022. This alarming trend highlights cybercriminals’ growing interest in cryptocurrency malware.
Passive nature of cryptocurrency malware attacks
Unlike other cyber threats, such as ransomware, cryptocurrency malware attacks are considered more passive. Rather than disrupting or destroying data, these attacks leverage the computing resources of a compromised device to mine cryptocurrency. Mining attacks are attractive to malicious groups because their low risk makes them difficult to detect and often goes unnoticed for long periods of time. Moreover, in many jurisdictions there is no explicit legal ban on cryptocurrency mining, making it difficult for authorities to track and prosecute perpetrators.
How cryptocurrency malware attacks spread
Cybercriminals use a variety of methods to spread cryptocurrency malware attacks. One common strategy is to install cryptocurrency mining code on your computer without your consent. This can be achieved by tricking victims into downloading harmless-looking files containing cryptocurrency mining malware or by enticing them to click on links that lead to malicious websites. Complicating detection and mitigation efforts, hacker groups can spread malware through compromised routers.
Another strategy is to insert cryptocurrency mining scripts into ads and websites. These scripts exploit browser vulnerabilities to cause visitors’ computers to mine cryptocurrency when they open an infected page. Fraudsters can also exploit software and operating system vulnerabilities or use sideloading exploits to install cryptojacking modules that mimic normal system activity. Malicious browser extensions are also used that disguise themselves as plugins for legitimate purposes, but once installed force victims’ computers to mine digital assets.
Symptoms of Cryptographic Malware Infection
Cryptocurrency malware infections can manifest themselves in a variety of ways, from the glaringly obvious to the incredibly subtle. One noticeable sign is unusual spikes in CPU usage because mining attacks target the central processing unit (CPU). If you monitor CPU activity using Task Manager in Windows or Activity Monitor in macOS, you may notice a rapid and constant increase in CPU utilization, especially when the system is idle.
Another symptom is poor performance due to excessive strain on CPU resources due to cryptocurrency mining operations. Infected devices may also exhibit unusual network activity, such as frequent outgoing connections or unfamiliar processes and applications consuming more CPU resources than usual. Additionally, prolonged use of the CPU in mining operations may result in increased power consumption, which may lead to overheating issues.
conclusion
Crypto malware poses an increasingly significant threat to digital assets and transactions, utilizing a variety of propagation methods and infection techniques. Its subtle nature makes it difficult to detect and it secretly utilizes the resources of infected devices for cryptocurrency mining. It is important to recognize key infection symptoms such as unusual CPU and network activity or overheating issues.
To protect against these threats, users should regularly update their software, avoid suspicious files or websites, and use reliable security tools. Increased awareness and monitoring for device changes can help detect and neutralize these attacks. Overall, fighting cryptocurrency malware requires technology and preventative measures to protect digital assets and transactions.