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KillNet hits healthcare sector with DDoS attacks

Malwarebytes

At the end of January, the Health Sector Cybersecurity Coordination Center warned that the KillNet group is actively targeting the US healthcare sector with distributed denial-of-service (DDoS) attacks. The Cybersecurity and Infrastructure Security Agency (CISA) says it helped dozens of hospitals respond to these DDoS incidents.

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Godlua backdoor, the first malware that abuses the DNS over HTTPS (DoH)

Security Affairs

The peculiarity of this new piece of malware is the ability to communicate with C2 servers via DNS over HTTPS ( DoH ). The DoH protocol was a new standard proposed in October 2018 and it is currently supported by several publicly available DNS servers. com domain. ” states the analysis. ” states the analysis.

DNS 86
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Massive increase in XorDDoS Linux malware in last six months

Malwarebytes

Since Linux is deployed on many IoT (Internet of Things) devices and cloud infrastructures, we are likely to see DDoS (distributed denial-of-system) attacks from botnets that have compromised such devices. The only simple (yet effective) tactic it uses is to brute force its way to gain root access to various Linux architectures.

Malware 135
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Pink Botnet infected over 1.6 Million Devices, it is one of the largest botnet ever seen

Security Affairs

The botnet was created to launch DDoS attacks and to insert advertisements in the legitimate HTTP traffic of the victims, most of which are in China (96%). The botnet leverages a robust architecture based on a combination of third-party services, P2P, and Command & Control servers. million devices.

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Discovery of Simps Botnet Leads To Ties to Keksec Group

Security Affairs

Uptycs’ threat research team discovered a new botnet, tracked as Simps botnet, attributed to Keksec group, which is focused on DDOS activities. Uptycs’ threat research team has discovered a new Botnet named ‘Simps’ attributed to Keksec group primarily focussed on DDOS activities. 200 in simps directory to tmp.

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How to Prevent DNS Attacks: DNS Security Best Practices

eSecurity Planet

Domain name service (DNS) attacks threaten every internet connection because they can deny, intercept, and hijack connections. With the internet playing an increasing role in business, securing DNS plays a critical role in both operations and security. Everything You Need to Know.

DNS 97
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Unveiling NKAbuse: a new multiplatform threat abusing the NKN protocol

SecureList

Written in Go, it is flexible enough to generate binaries compatible with various architectures. The implant is downloaded from the same server; it is named “ app_linux_{ARCH}”, where “{ARCH}” is the target OS architecture. NKAbuse contains a large arsenal of Distributed Denial of Service (DDoS) attacks.

Malware 107