Mirai Variant 'Aquabot' Exploits Mitel Device Flaws

Yet another Mirai botnet variant is making the rounds, this time offering distributed denial-of-service (DDoS) as-a-service by exploiting flaws in Mitel SIP phones. It also features a unique capability to communicate with attacker command-and-control (C2). Researchers at the Akamai Security Intelligence and Response Team (SIRT) identified the variant of the infamous botnet, dubbed Aquabot, that actively exploits CVE-2024-41710, a command-injection vulnerability that affects various Mitel models that are used in corporate environments, they revealed in a blog post published Jan. 29. The vulnerability relies on an input sanitization flaw, and exploitation can lead to root access of the device, SIRT researchers Kyle Lefton and Larry Cashdollar wrote in the post. The variant is the third version of Aquabot (Akamai calls it Aquabotv3) to appear on the scene; the first version was built off the Mirai framework with the ultimate goal of DDoS, discovered in November 2023, and it was first reported by Antiy Labs. The second version of the bot "tacked on concealment and persistence mechanisms, such as preventing device shutdown and restart" that remain present in v3, the researchers wrote. The new variant is distinct from the previous versions for a couple of reasons, the researchers said. One is a unique feature appearing first in Aquabotv3: a function named "report_kill" that reports back to the C2 when a kill signal is caught on the infected device. So far, however, researchers have...