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Muddling Meerkat, a mysterious DNS Operation involving China’s Great Firewall

Security Affairs

The China-linked threat actors Muddling Meerkat are manipulating DNS to probe networks globally since 2019. Infoblox researchers observed China-linked threat actors Muddling Meerkat using sophisticated DNS activities since 2019 to bypass traditional security measures and probe networks worldwide. ” concludes the report.

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FBI warns cyber actors abusing protocols as new DDoS attack vectors

Security Affairs

The FBI issued an alert last week warning about the discovery of new network protocols that have been exploited to launch large-scale DDoS attacks. The Federal Bureau of Investigation sent an alert last week warning about large-scale distributed denial of service (DDoS) attacks that abused new network protocols. continues the report.

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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.

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Hackers use hackers spreading tainted hacking tools in long-running campaign

Security Affairs

Who is hacking the hackers? Experts from Cybereason a mysterious hackers group is targeting other hackers by spreading tainted hacking tools. Experts from security firm Cybereason warn of a mysterious group of hackers that are distributing trojanized hacking tools on an almost daily basis for the past years.

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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. Communication with C&C servers is based on DNS requests and it uses a special mechanism translating DNS results to a real IP address. SecurityAffairs – hacking, botnet).

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Feds Charge Three in Mass Seizure of Attack-for-hire Services

Krebs on Security

The seizure notice appearing on the homepage this week of more than a dozen popular “booter” or “stresser” DDoS-for-hire Web sites. ” In such assaults, the perpetrators leverage unmanaged Domain Name Servers (DNS) or other devices on the Web to create huge traffic floods. bullstresser[.]net. netstress[.]org.

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Security Affairs newsletter Round 192 – News of the week

Security Affairs

Duke-Cohan sentenced to three years in prison due to false bomb threats and DDoS. Expert devised a new WiFi hack that works on WPA/WPA2. Hackers defaced Linux.org with DNS hijack. New threat actor SandCat exploited recently patched CVE-2018-8611 0day. French foreign ministry announced its Travel Alert Registry Hack.

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