After looking into the recent variant of the Glupteba dropper delivered from a malvertising attack, we found that the dropper downloaded two undocumented components aside from the Glupteba malware—a browser stealer and a router exploiter. Another notable feature is that the malware can now also update its command and control server address using data from bitcoin transactions.Read More
By Augusto Remillano II and Jakub Urbanec Within a span of three weeks, our telemetry uncovered three notable malware variants of Neko, Mirai, and Bashlite. On July 22, 2019, we saw and started analyzing a Neko botnet sample, then observed another sample with additional exploits the following week. A Mirai variant that calls itself “Asher”…Read More
We discovered a new variant of Mirai that uses a total of 13 different exploits, almost all of which have been used in previous Mirai-related attacks. Typical of Mirai variants, it has backdoor and distributed denial-of-service (DDoS) capabilities. However, this case stands out as the first to have used all 13 exploits together in a single campaignRead More
Many devices such as cameras, printers, and routers use UPnP to make it easy for them to automatically discover and vet other devices on a local network and communicate with each other for data sharing or media streaming. UPnP works with network protocols to configure communications in the network. But with its convenience comes security holes that range from attackers gaining control of devices to bypassing firewall protections.
We looked into UPnP-related events in home networks and found that many users still have UPnP enabled in their devices.Read More
We identified a new exploit kit we named Novidade that targets home or small office routers by changing their Domain Name System (DNS) settings via cross-site request forgery (CSRF), enabling attacks on a victim’s mobile device or desktop through web applications in which they’re authenticated with. Once the DNS setting is changed to that of a malicious server, the attacker can execute a pharming attack, redirecting the targeted website traffic from all devices connected to the same router.Read More