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DirtyMoe botnet infected 100,000+ Windows systems in H1 2021

Security Affairs

The Windows botnet has been active since late 2017, it was mainly used to mine cryptocurrency, but it was also involved in DDoS attacks in 2018. The module that implements the warm capabilities was spotted scanning the internet and performing password brute-force attacks against Windows systems with SMB port open online.

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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.

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Unveiling NKAbuse: a new multiplatform threat abusing the NKN protocol

SecureList

A not-so-new attack vector Evidence collected and analyzed by GERT suggests that this attack exploited an old vulnerability related to Struts2 (CVE-2017-5638 – Apache Struts2), targeting a financial company. (#dm=@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS).(#_memberAccess?(#_memberAccess=#dm):((#cont _memberAccess?(#_memberAccess=#dm):((#cont

Malware 104
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M2M protocols can be abused to attack IoT and IIoT systems

Security Affairs

Security experts from Trend Micro discovered that some machine-to-machine (M2M) protocols can be abused to attack IoT and industrial Internet of Things (IIoT) systems. “For data gathering, we played the role of a casual attacker with modest resources, scanning the internet for exposed MQTT brokers and CoAP hosts.

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Necurs Botnet adopts a new strategy to evade detection

Security Affairs

The Necurs botnet was not active for a long period at the beginning of 2017 and resumed its activity in April 2017 when it was observed using a new technique to avoid detection. Experts pointed out that DGA is a double-edged sword because allows security researchers to analyze DNS and network traffic to enumerate bots.

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DDoS attacks in Q4 2021

SecureList

Q4 2021 saw the appearance of several new DDoS botnets. In October, the botnet was upgraded with DDoS functionality. This is further evidence that the same botnets are often used for mining and DDoS. The bot infiltrated the devices through the CVE-2017-6079 vulnerability, which allows execution of arbitrary commands.

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Inside Mirai the infamous IoT Botnet: A Retrospective Analysis

Elie

This post provides a retrospective analysis of Mirai — the infamous Internet-of-Things botnet that took down major websites via massive distributed denial-of-service using hundreds of thousands of compromised Internet-Of-Things devices. distributed Denial of service attacks (DDoS). OVH DDoS attack. Krebs on Security.

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