Quad7 Botnet Expands to Target SOHO Routers and VPN Appliances
Sep 11, 2024
Network Security / Hacking
The operators of the mysterious Quad7 botnet are actively evolving by compromising several brands of SOHO routers and VPN appliances by leveraging a combination of both known and unknown security flaws. Targets include devices from TP-LINK, Zyxel, Asus, Axentra, D-Link, and NETGEAR, according to a new report by French cybersecurity company Sekoia. "The Quad7 botnet operators appear to be evolving their toolset, introducing a new backdoor and exploring new protocols, with the aim of enhancing stealth and evading the tracking capabilities of their operational relay boxes (ORBs)," researchers Felix Aimé, Pierre-Antoine D., and Charles M. said . Quad7, also called 7777, was first publicly documented by independent researcher Gi7w0rm in October 2023, highlighting the activity cluster's pattern of ensnaring TP-Link routers and Dahua digital video recorders (DVRs) into a botnet. The botnet, which gets its name from the fact it opens TCP port 7777 on compromised devices, ...
