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Microsoft Patch Tuesday, March 2021 Edition

Krebs on Security

In the ENKI blog post, the researchers said they will publish proof-of-concept (PoC) details after the bug has been patched. For the second month in a row, Microsoft has patched scary flaws in the DNS servers on Windows Server 2008 through 2019 versions that could be used to remotely install software of the attacker’s choice.

DNS 318
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Threat Protection: The REvil Ransomware

Cisco Security

We looked at REvil, also known as Sodinokibi or Sodin, earlier in the year in a Threat Trends blog on DNS Security. In it we talked about how REvil/Sodinokibi compromised far more endpoints than Ryuk, but had far less DNS communication. Figure 1-DNS activity surrounding REvil/Sodinokibi. Deleting backups.

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Abusing cloud services to fly under the radar

Fox IT

NCC Group and Fox-IT observed this threat actor during various incident response engagements performed between October 2019 until April 2020. The more recent intrusions took place in 2019 at companies in the aviation industry. observed Q2 2017 Cobalt Strike v3.12, observed Q3 2018 Cobalt Strike v3.14, observed Q2 2019.

VPN 68
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Operation ‘Harvest’: A Deep Dive into a Long-term Campaign

McAfee

McAfee customers are protected from the malware/tools described in this blog. A more detailed blog with specific recommendations on using the McAfee portfolio and integrated partner solutions to defend against this attack can be found here. The hardcoded 208.67.222.222 resolves to a legitimate OpenDNS DNS server. Conclusion.

Malware 144
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Tomiris called, they want their Turla malware back

SecureList

Introduction We introduced Tomiris to the world in September 2021, following our investigation of a DNS-hijack against a government organization in the Commonwealth of Independent States (CIS). Tomiris (Golang implant) Backdoor Golang Described in our original blog post. Some samples contain traces of Russian language.

Malware 96
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What is the Automated Certificate Management Environment (ACME) Protocol?

Security Boulevard

The CA will issue challenges (DNS or HTTPS) requiring the agent to take an action that demonstrates control over said domain(s). In addition, ACME can make the process of choosing a backup CA a fairly easy one. For that reason, having a backup CA is always a good idea,” he explains in a blog of his. . Related posts.

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How much does access to corporate infrastructure cost?

SecureList

Revenue: 8kk+$ (information is current as of 2019). There is access data to 2-3 domains of that network, the total number is 3-4, I don’t know exactly, see the screenshot below for DNS servers! There is access to a network, admin-level access, direct connection to SSH servers, access to backups. Country: France.

VPN 97