ProxySmart Software: The Belarusian Platform Powering 90+ SIM Farms for Cybercrime
Cybersecurity researchers have uncovered a sophisticated software platform called ProxySmart, which is enabling SIM farm operators to conduct cybercrime on an industrial scale. This Belarus-based tool has been linked to at least 87 control panels across 17 countries, according to a new report from Infrawatch.
But what exactly is ProxySmart, and how does it facilitate such widespread criminal activity? Let’s break down the findings.
What Is ProxySmart SIM Farm Software?
ProxySmart is a turnkey software platform designed to manage and monetize physical SIM farms—collections of smartphones or modems used to generate large volumes of mobile IP addresses. The platform offers an end-to-end solution, including device management, automated IP rotation, customer provisioning, and anti-bot countermeasures.
According to Infrawatch, ProxySmart is publicly associated with a Belarus-based vendor and markets itself as a commercial product rather than a niche tool for technical experts. This means that even operators with limited technical skills can set up and run a SIM farm, dramatically lowering the barrier to entry for cybercrime.
How ProxySmart Powers Cybercrime at Scale
SIM farms are a critical enabler for various types of cybercrime, including smishing (SMS phishing), premium-rate number fraud, bot sign-ups, and one-time password interception. They can also be used by nation states; for example, Russian authorities have employed SIM farms to spread disinformation in Ukraine.
ProxySmart effectively offers “SIM Farm as a Service” (SFaaS), providing a complete ecosystem for operators. The platform supports physical smartphones and USB 4G/5G modems. Smartphones are enrolled via an unsigned Android APK, while modems are managed using the open-source ModemManager tool.
Interestingly, IP rotation for phones works by automatically toggling airplane mode on and off for three seconds, forcing a reconnection to the cellular network and assigning a new egress IP. This rapid rotation makes it extremely difficult for authorities to track or block malicious traffic.
Key Features of the ProxySmart Platform
The platform supports several tunneling and proxy protocols, including OpenVPN, SOCKS5, VLESS, and HTTP proxies. It also includes an OS spoofing feature that allows operators to simulate TCP fingerprints of macOS, iOS, Windows, or Android—further complicating detection efforts.
Infrawatch noted that the backend service is written in Python and heavily obfuscated using PyArmor, making it harder for researchers to analyze. The control panel is typically self-hosted by the farm operator, with a reverse proxy deployed in front to disguise its location.
Global Reach: 90+ SIM Farms Across 17 Countries
Infrawatch identified 87 instances of ProxySmart control panels in 17 countries, along with 94 phone farm locations. These farms are distributed across 19 U.S. states, as well as multiple countries in Europe and South America.
The report concluded that “this ecosystem materially lowers the barrier to operating and reselling mobile proxy infrastructure, with limited evidence of meaningful eligibility checks across many downstream providers.” This means that the combination of carrier-grade NAT, rapid IP rotation, and multi-carrier availability reduces the effectiveness of IP-centric controls and complicates attribution at scale.
For more on SIM farms and their impact, check out this analysis of SIM farm cybercrime risks. Additionally, learn about how mobile proxy threats are evolving.
What This Means for Cybersecurity
The discovery of ProxySmart highlights a growing trend: the commoditization of cybercrime infrastructure. By offering a user-friendly, productized platform, ProxySmart enables a wider range of actors to engage in sophisticated attacks without needing deep technical expertise.
As a result, organizations must adapt their defenses. Traditional IP-based blocking is no longer sufficient when attackers can rotate IPs rapidly and spoof device fingerprints. Instead, security teams should focus on behavioral analysis, multi-factor authentication, and threat intelligence sharing.
Furthermore, law enforcement agencies need to collaborate internationally to dismantle these networks. Given that ProxySmart is linked to Belarus, international cooperation will be crucial for any takedown efforts.
In conclusion, ProxySmart represents a significant evolution in SIM farm operations, making cybercrime more accessible and harder to stop. Staying informed about such threats is the first step toward building stronger defenses. For more insights, see our guide to emerging cybercrime trends in 2025.