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Attackers were observed exploiting CVE-2020-9020, a critical remote command execution flaw in Iteris Vantage Velocity field units, to deploy a Satori variant of the Mirai botnet. The activity targeted versions 2.3.1, 2.4.2, and 3.0 through crafted HTTP requests to the vulnerable /cgi-bin/timeconfig.py endpoint, injecting commands via the htmlNtpServer parameter and downloading malware from 198.23.238.203.
The malware was built to compromise multiple CPU architectures and then scan random hosts over Telnet port 23 using an embedded password dictionary, behavior consistent with Mirai-style propagation. Researchers said infected traffic-monitoring devices could be repurposed for botnet enrollment, DDoS operations, or data leakage, and noted communications with a suspected command-and-control service over SSL on port 5684; affected organizations were urged to patch or upgrade exposed systems.
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4 events from the most recent confirmed update back to the earliest known activity.
The payload delivered through the exploitation was assessed as Satori, a Mirai botnet variant. Investigators found nine related malware samples on 198.23.238.203 for multiple CPU architectures and observed infected devices communicating over SSL on port 5684, believed to be C2 traffic.
Unit 42 researchers observed exploit attempts against CVE-2020-9020 using crafted HTTP requests to the /cgi-bin/timeconfig.py endpoint on vulnerable Vantage Velocity devices. The exploit injected commands through the htmlNtpServer parameter to download and execute malware.
According to VirusTotal, the malicious server at 198.23.238.203 was first noticed by the security community. The server later served multiple malware samples associated with the observed campaign.
The Iteris Vantage Velocity field unit remote command execution flaw CVE-2020-9020 was disclosed in early 2020. The vulnerability affects versions 2.3.1, 2.4.2, and 3.0 and allows command injection via the htmlNtpServer parameter in /cgi-bin/timeconfig.py.
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Mirai-related botnets remained highly active as operators rapidly incorporated newly disclosed remote code execution flaws and weak-credential attacks against internet-facing IoT and network security devices. Palo Alto Networks Unit 42 reported an active campaign exploiting vulnerabilities including `CVE-2021-27561`, `CVE-2021-27562`, `CVE-2021-22502`, and `CVE-2020-26919` across products such as SonicWall SSL-VPN, D-Link DNS-320, Yealink Device Management, Micro Focus Operation Bridge Reporter, Netis routers, and Netgear ProSAFE Plus devices. Fortinet likewise observed roughly 200 attacks per day in a three-week honeypot study, with nearly 4,000 of about 4,700 Telnet attacks tied to Mirai-related malware families and variants quickly adding exploits such as OptiLink GPON RCE, `CVE-2021-1498`, and `CVE-2021-31755`. Successful compromises typically fetched shell scripts that installed multi-architecture Mirai binaries, and in some cases added SSH brute-force and scanning tools, attempted persistence, removed artifacts, and blocked management ports to retain control. Researchers said the broader botnet ecosystem also remained resilient beyond Mirai alone: Fortinet identified active variants including **SORA**, **SYLVEON**, **Hajime**, and **MANGA**, while earlier Netlab 360 analysis showed Hajime continuing to grow through a modular peer-to-peer architecture and propagation via TR-069 flaws and weak Telnet credentials. The combined reporting underscores that unpatched edge devices and default or weak passwords continued to fuel large-scale botnet expansion.
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Palo Alto Networks Unit 42 reported that a new **Mirai** campaign is targeting internet-exposed IoT devices by chaining multiple known exploits to compromise systems and pull them into a botnet. The activity focuses on broad opportunistic scanning and exploitation, continuing Mirai’s long-running pattern of abusing weakly secured embedded devices such as routers, cameras, and other Linux-based appliances. The campaign’s significance lies in its use of several IoT vulnerabilities rather than a single flaw, increasing the number of devices that can be infected and used for follow-on malicious activity such as distributed denial-of-service (**DDoS**) attacks. The report highlights the ongoing risk from unpatched and publicly reachable IoT infrastructure, underscoring the need for rapid patching, exposure reduction, and stronger hardening of embedded systems connected to the internet.
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