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DDoS attacks in Q4 2020

SecureList

The DTLS (Datagram Transport Layer Security) protocol is used to establish secure connections over UDP, through which most DNS queries, as well as audio and video traffic, are sent. While the resource was down, cryptocurrency newbies were invited to download a copy of Bitcoin Core via a torrenting service.

DDOS 145
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Fake Lawsuit Threat Exposes Privnote Phishing Sites

Krebs on Security

The disclosure revealed a profitable network of phishing sites that behave and look like the real Privnote, except that any messages containing cryptocurrency addresses will be automatically altered to include a different payment address controlled by the scammers. co showing the site did indeed swap out any cryptocurrency addresses.

Phishing 293
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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. They accept payment via PayPal, Google Wallet, and/or cryptocurrencies, and subscriptions can range in price from just a few dollars to several hundred per month. bullstresser[.]net.

DNS 241
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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. ” concludes the analysis.”

DNS 145
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Chinese Cyberespionage Groups Probe SentinelOne in Sophisticated ShadowPad and PurpleHaze Campaigns

Penetration Testing

Key tactics included: Obfuscation using ScatterBrain and ScatterBee Use of DLL hijacking DNS-over-HTTPS (DoH) for C2 communication Exploitation of vulnerable enterprise infrastructure (e.g., These implants exfiltrated sensitive files such as certificates and cryptocurrency keys via a custom PowerShell exfiltration script.

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FreakOut botnet target 3 recent flaws to compromise Linux devices

Security Affairs

The attacks aimed at compromising the tarted systems to create an IRC botnet, which can later be used to conduct several malicious activities, including DDoS attacks and crypto-mining campaign. Supports UDP and TCP packets, but also application layer protocols such as HTTP, DNS, SSDP, and SNMP Protocol packing support created by the attacker.

DDOS 144
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TeamTNT group uses Hildegard Malware to target Kubernetes Systems

Security Affairs

At the end of January, the group has improved its Linux cryptocurrency miner by implementing open-source detection evasion capabilities. The malware deploys the XMRig mining tool to mine Monero cryptocurrency. The TeamTNT botnet is a crypto-mining malware operation that has been active since April 2020 and that targets Docker installs.

Malware 121