XorDDoS, Mirai, and Mozi are Most Prominent Linux-targeted Malware

Linux-based computers are numerous and are an integral component of the internet backbone, but Linux malware has increasingly targeted low-power Internet of Things (IoT) devices. With billions of internet-connected devices such as vehicles, refrigerators, and network equipment online, IoT devices have become a prominent target for malware and distributed denial of service (DDoS) attacks, in which junk data is aimed at flooding a target and knocking it offline. 

Although ransomware is currently wreaking havoc on the malware scene in a deluge of high-profile attacks, a recent study on Linux security finds it only ranks third among the top threat kinds. Such shift in attitude stems in part from an increasing recognition among Linux hobbyists and system administrators that a compromised Linux system, such as a web server, presents attackers with a high return on investment.’ In addition, malware research has improved visibility into the dangers that Linux systems face in recent years. 

In 2021, the XorDDoS, Mirai, and Mozi malware families and variants emerged to be the most prevalent, accounting for over 22% of all IoT Linux-targeting malware, according to an analysis of the current Linux threat landscape. 

XorDDoS is a Linux trojan that has been developed for a variety of Linux architectures, including ARM, x86, and x64. It gets its name from the fact that it uses XOR encryption in malware and network connection with the C2 infrastructure. XorDDoS variations on Linux PCs demonstrate that operators mo

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