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CosmicStrand: the discovery of a sophisticated UEFI firmware rootkit

SecureList

One of the main draws towards malware nested in such low levels of the operating system is that it is extremely difficult to detect and, in the case of firmware rootkits, will ensure a computer remains in an infected state even if the operating system is reinstalled or the user replaces the machine’s hard drive entirely.

Firmware 145
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CVE-2021-40847 flaw in Netgear SOHO routers could allow remote code execution

Security Affairs

The flaw, tracked as CVE-2021-40847, resides in the source of a third-party component included in the firmware of many Netgear devices. Experts noticed that database updates from Netgear are unsigned and downloaded via Hypertext Transfer Protocol (HTTP), allowing the attacker to carry out a MitM attack on the device.

DNS 142
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PixieFail: Nine flaws in UEFI open-source reference implementation could have severe impacts

Security Affairs

Unified Extensible Firmware Interface (UEFI) is a specification that defines the architecture of the platform firmware used for booting the computer hardware and its interface for interaction with the operating system. ” reads the advisory. ” states CERT/CC. . ” states CERT/CC.

Firmware 133
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Triada strikes back

SecureList

With time, the vulnerabilities were patched, and restrictions were added to the firmware. Attackers are leveraging this by embedding malicious software into Android device firmware. Attackers are now embedding a sophisticated multi-stage loader directly into device firmware. oat ) located in the same directory.

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Update now! Many HP printers affected by three critical security vulnerabilities

Malwarebytes

The Link-Local Multicast Name Resolution (LLMNR) is a protocol based on the Domain Name System (DNS) packet format that allows both IPv4 and IPv6 hosts to perform name resolution for hosts on the same local link. Its main function is to resolve host names to facilitate communication between hosts on local networks. How to update your printer.

Firmware 145
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Sunburst: connecting the dots in the DNS requests

SecureList

At the moment, we identified approximately ~100 customers who downloaded the trojanized package containing the Sunburst backdoor. Other advanced threat groups are also known to adopt similar strategies, for instance with hardware or firmware implants, which “sleep” for weeks or months before connecting to their C2 infrastructure.

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Pink Botnet infected over 1.6 Million Devices, it is one of the largest botnet ever seen

Security Affairs

Every time a vendor made some attempts to address the problem, the botmaster pushed out multiple firmware updates on the fiber routers to maintain their control. This architecture was implemented to make the botnet resilient to takedowns by law enforcement and security firms with the support of the vendors of the infected devices.