Report: Researchers Null-route Over 550 Kimwolf And Aisuru Botnet Command...
The Black Lotus Labs team at Lumen Technologies said it null-routed traffic to more than 550 command-and-control (C2) nodes associated with the AISURU/Kimwolf botnet since early October 2025.
AISURU and its Android counterpart, Kimwolf, have emerged as some of the biggest botnets in recent times, capable of directing enslaved devices to participate in distributed denial-of-service (DDoS) attacks and relay malicious traffic for residential proxy services.
Details about Kimwolf emerged last month when QiAnXin XLab published an exhaustive analysis of the malware, which turns compromised devices – mostly unsanctioned Android TV streaming devices – into a residential proxy by delivering a software development kit (SDK) called ByteConnect either directly or through sketchy apps that come pre-installed on them.
The net result is that the botnet has expanded to infect more than 2 million Android devices with an exposed Android Debug Bridge (ADB) service by tunneling through residential proxy networks, thereby allowing the threat actors to compromise a wide swath of TV boxes.
A subsequent report from Synthient has revealed Kimwolf actors attempting to offload proxy bandwidth in exchange for upfront cash.
Black Lotus Labs said it identified in September 2025 a group of residential SSH connections originating from multiple Canadian IP addresses based on its analysis of backend C2 for Aisuru at 65.108.5[.]46, with the IP addresses using SSH to access 194.46.59[.]169, which proxy-sdk.14emeliaterracewestroxburyma02132[.]su.
It's worth noting that the second-level domain surpassed Google in Cloudflare's list of top 100 domains in November 2025, prompting the web infrastructure company to scrub it from the list.
Then, in early October 2025, the cybersecurity company said it identified another C2 domain – greatfirewallisacensorshiptool.14emeliaterracewestroxburyma02132[.]su – that resolved to 104.171.170[.]21, an IP address belonging to Utah-based hosting provider Resi Rack LLC. The company advertises itself as a "Premium Game Server Hosting Provider."
This link is crucial, as a recent report from independent security journalist Brian Krebs revealed how people behind various proxy services based on the botnets were peddling their warez on a Discord server called resi[.]to. This also includes Resi Rack's co-founders, who are said to have been actively engaged in selling proxy services via Discord for nearly two years.
The server, which has since disappeared, was ow
Source: The Hacker News
