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Untracked Nightmares: The Threats Hiding Behind Commodity Infrastructure
Unit 42 exposes CL-CRI-1171, a pay-per-install network spreading malware like Insomnia RAT via YouTube channels and SEO poisoning for over two years.
Palo Alto Networks Unit 42 details CL-CRI-1171, a cybercrime cluster operating a pay-per-install (PPI) marketplace that has delivered multiple malware families for at least two years. The group used at least eleven YouTube gaming channels with hundreds of thousands of followers, plus SEO poisoning promoting trojanized software such as a Bluetooth driver and WinDirStat, infecting gamers and corporate endpoints including critical infrastructure and government entities. A single shared loader delivered payloads including Insomnia RAT, ARKTunnel, Docro Hijacker, GCleaner and Socks5Systemz between July 2025 and April 2026, with more than 10,000 distinct loader samples and over 200 rotating C2 domains identified. YouTube terminated the malicious channels after Unit 42 notified the platform.
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BambooToken Malware Uses MQTT to Control Windows and Linux Systems
Lumen uncovers BambooToken, a stealthy multi-platform malware using MQTT C2 and Tendyron DLL sideloading to compromise Asian and South American organizations.
Lumen Black Lotus Labs disclosed BambooToken, a previously undocumented malware family active since at least February 2023 that controls Windows and (since December 2025) Linux hosts via the MQTT protocol for C2. The malware sideloads a rogue OnKeyToken_KEB.dll via Tendyron's OnKey PKI token software, gathers host details, and uses a WMI-based plugin to enumerate installed antivirus products and exfiltrate them to C2 domains proxied through Cloudflare. A dozen compromised entities were detected across Asia and South America, and DLL sideloading plus SoftEther VPN usage suggests a China nexus.
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BraZetsu Malware Turns Compromised Windows Hosts Into Criminal Marketplace Inventory
Group-IB details BraZetsu, a modular Python Windows malware that monetizes compromised-host access through the Infected Marketplace for initial access brokers.
Group-IB attributes BraZetsu to the Exilware threat actor, believed to be native Portuguese speakers targeting Iberian and Latin American e-commerce, financial, industrial, and law enforcement victims. The framework, first observed in early May 2026, uses generative AI for data triage and target prioritization, steals browser histories and digital certificates, and hunts Brazilian CNAB financial remittance files. Access to compromised hosts is sold on the Infected Marketplace from roughly $5.80, letting buyers remotely deploy secondary payloads over WebSocket-linked infrastructure. Some samples evaded detection on VirusTotal; delivery likely uses VBS loaders from a domain also used to distribute the Ousaban banking trojan.
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ToxicPanda 2.0 and GoldDigger Expand Android Banking Attacks with On
Zimperium and IBM Trusteer report expanded ToxicPanda 2.0 and GoldDigger Android banking trojan campaigns now targeting 349 financial institutions across 16 countries.
Zimperium zLabs reports ToxicPanda 2.0 (TgToxic) now carries 167 remote commands, targets 349 financial institutions across 16 countries via more than 140 banking and cryptocurrency apps, and abuses Android Wireless Debugging via ADB for privilege escalation and shell access. It harvests lock screen PINs with fake overlays, steals UI elements via accessibility services, sets Device Administrator privileges, and is distributed through Amazon AWS-hosted buckets. IBM Trusteer documents a GoldDigger campaign impersonating airline companies and shopping retailers, causing massive infections in South Africa and the U.K., obfuscated with the dpt-shell packer that detects Frida and resists debugging. GoldDigger performs on-device fraud by injecting input into banking apps and is attributed to the Chinese-speaking GoldFactory actor.
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ToxicPanda 2.0 Gets a Major Upgrade, Expanding Attacks Across 16 Countries
Zimperium documents ToxicPanda 2.0, an Android banking trojan now targeting 349 financial institutions in 16 countries via ADB privilege escalation and overlay credential theft.
Zimperium's zLabs documented ToxicPanda 2.0, an Android banking trojan expanding from 16 targeted apps to 349 financial institutions across 16 countries, with 167 remote commands. It poses as a dropper, abuses VPN permissions to block Google Play Protect while installing a hidden payload, then uses the Accessibility Service for screen monitoring and overlay-based credential theft. It automates enabling Android Wireless Debugging and completes the pairing handshake to gain ADB shell access for privilege escalation, and overlays fake lock screens to steal device PINs. Previously unfinished commands are now operational and samples are served from AWS-hosted storage buckets.
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Manic Android Malware Exfiltrates Data From Offline Phones via Nearby Infected Devices
ThreatFabric identified Manic, an Android banking malware and spyware targeting Ukrainian and European financial apps with novel offline Wi-Fi mesh data exfiltration via nearby infected devices.
ThreatFabric reported a new Android malware family called Manic combining banking fraud and surveillance capabilities, targeting 169 package IDs across Ukrainian banks, government and identity services, messaging apps, and Russian and European financial institutions. The malware uses phishing sites and dropper apps impersonating utilities for distribution and relies on accessibility services and notification permissions for keylogging, overlays, and remote control. It introduces a store-and-forward relay mechanism that stages encrypted data locally and relays it through nearby infected devices via Wi-Fi Direct, Bluetooth RFCOMM, or BLE GATT, supporting up to four hops when the primary device lacks internet access. Activity dates back to February 2026, with active development through late July.
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Home & Small Office Wireless Routers Exploited to Attack Gaming Servers
Unit 42 details an updated Gafgyt botnet variant exploiting Zyxel, Huawei, and Realtek router vulnerabilities to recruit devices for DoS attacks on gaming servers.
Unit 42 researchers identified an updated Gafgyt variant derived from the JenX botnet that combines three remote code execution exploits: CVE-2017-18368 (Zyxel P660HN-T1A), CVE-2017-17215 (Huawei HG532), and CVE-2014-8361 (Realtek RTL81XX chipset). Shodan scans show more than 32,000 wireless routers worldwide potentially vulnerable to these exploits. The exploits act as droppers, pulling architecture-specific binaries from a malicious server (185.172.110.224), and the botnet performs denial-of-service attacks against gaming servers, most notably Valve Source engine servers.
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Kimwolf botnet rebuilt to survive takedowns, researchers say
Palo Alto Unit 42 reports the Kimwolf/Aisuru botnet now uses HTTP/2 Chrome-impersonation floods and Ethereum blockchain-based command resolution to survive takedowns.
Palo Alto Networks' Unit 42 says a new Kimwolf/Aisuru botnet version active since February conducts DDoS floods over HTTP/2 with full Chrome browser fingerprints, making attack traffic hard to distinguish from real users. The malware resolves command servers via the Ethereum Name Service using five shuffled Ethereum endpoints, with a Tor hidden service fallback, so authorities cannot seize a domain or serve a takedown order. The botnet, powered mostly by hijacked Android TV boxes and IoT devices, previously had servers seized and an alleged operator arrested; new C2 infrastructure traces to a single network in Saint Petersburg, Russia. It is unclear whether the same developers built the new version.
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