Bitcoin mining pool recent exploits

Though security is integrated throughout all blockchain technology, even the strongest blockchains come under attack by modern cybercriminals. Apriorit experts have already analyzed the attacks on Coincheck , Verge , and the Bancor exchange, which have greatly undermined the reputation of the blockchain itself. Blockchains can resist traditional cyber attacks quite well, but cybercriminals are coming up with new approaches specifically for hacking blockchain technology. In this article, we describe the main attack vectors against blockchain technology and take a look at the most significant blockchain attacks to date.

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Content:

• Bitcoin Mining Attacks Explained
• Why China Is Cracking Down on Bitcoin Mining and What It Could Mean for Other Countries
• Build a custom email digest by following topics, people, and firms published on JD Supra.
• 2 Bitcoin Cash Mining Pools Organized 51% Attack to Thwart Hacker
• Windows and Linux devices are under attack by a new cryptomining worm
• Vulnerabilities Exploited for Monero Mining Malware Delivered via GitHub, Netlify
• Bitcoin Mining Pools Targeted in Wave of DDOS Attacks

WATCH RELATED VIDEO: How To Choose the BEST MINING POOL

Bitcoin Mining Attacks Explained

Massive ransomware attacks on major industries. Crippling vulnerabilities. Widespread data breaches. The list goes on. What is one of the most advantageous qualities for a cyber threat to have? According to Cisco Talos, it's the ability to go unnoticed. And its recent investigation found a botnet that does just that. Called "Prometei," this cryptocurrency mining botnet uses techniques to fly under the radar of end-users, though the strategies themselves might be obvious to a defender.

The adversary also uses several crafted tools that helps the botnet increase the amount of systems participating in its Monero-mining pool. Cisco Talos has been tracking Prometei for three months, though the botnet has been active since March. Allegedly, the attack suffered a blow in June due to a takeover of one of its command and control C2 servers. The botnet continues to make a moderate profit for a single developer, most likely based in Eastern Europe.

The actor behind it is also likely its developer. The TTPs indicate we may be dealing with a professional developer, based on their ability to integrate SMB exploits such as Eternal Blue and authentication code and the use of existing open-source projects, such as Mimikatz and FreeRDP.

Everything starts with the main botnet file. From there, the infection copies and spreads throughout the system, using passwords retrieved by a modified Mimikatz module and exploits like Eternal Blue. However, the encrypted data is sent using RC4 encryption, and the module shares the key with the C2 using asymmetric encryption.

Apart from a large focus on spreading across the environment, Prometei also tries to recover administrator passwords. The discovered passwords are sent to the C2 and then reused by other modules that attempt to verify the validity of the passwords on other systems using SMB and RDP protocols. But that's not all. In addition to stealing computing power, Prometei has another feature: stealing and validating credentials.

This is why organizations that detect the presence of Prometei botnet on their system should act immediately to remove it and to make sure none of their credentials are leaked to the command and control server. Read more about the author. Security Awareness. Cyber Law. See what SecureWorld can do for you.

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Why China Is Cracking Down on Bitcoin Mining and What It Could Mean for Other Countries

There's also live online events, interactive content, certification prep materials, and more. Mining is the process by which new bitcoin is added to the money supply. Mining also serves to secure the bitcoin system against fraudulent transactions or transactions spending the same amount of bitcoin more than once, known as a double-spend. Miners provide processing power to the bitcoin network in exchange for the opportunity to be rewarded bitcoin.

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Once you understand cryptocurrency mining and have decided to try it out, you may join a mining pool because you're more likely to be rewarded for your work. However, choosing a mining pool can be challenging—there are many to choose from and several questions to answer. Find out what you should look for in a mining pool and how to decide which one you should join. You're able to mine cryptocurrency on a variety of devices if they are capable. However, GPU and CPU mining is not as profitable as it used to be due to the increased time and energy consumption it takes to mine a coin. It's best to use a mining rig designed specifically for cryptocurrency mining called an application-specific integrated circuit ASIC. There are several ASICs available for purchase from online retailers. The higher the hashrate, the faster you'll mine—but you'll pay more upfront.

2 Bitcoin Cash Mining Pools Organized 51% Attack to Thwart Hacker

In December , 88 percent of all remote code execution RCE attacks sent a request to an external source to try to download a crypto-mining malware. These attacks try to exploit vulnerabilities in the web application source code, mainly remote code execution vulnerabilities, in order to download and run different crypto-mining malware on the infected server. RCE vulnerabilities are one of the most dangerous of its kind as attackers may execute malicious code in the vulnerable server. Have you ever wondered what kind of malicious code attackers want to execute? The answer in most cases is — any code that earns the attackers a lot of money with little effort and as quickly as possible.

Windows and Linux devices are under attack by a new cryptomining worm

A newly discovered cryptomining worm is stepping up its targeting of Windows and Linux devices with a batch of new exploits and capabilities, a researcher said. It did this by scanning the Internet for vulnerable devices and, when found, infecting them using a list of exploits that has increased over time. The malware also included a cryptominer that uses infected devices to create the Monero digital currency. There was a separate binary file for each component. By March, Sysrv developers had redesigned the malware to combine the worm and miner into a single binary. They also gave the script that loads the malware the ability to add SSH keys, most likely as a way to make it better able to survive reboots and to have more sophisticated capabilities.

Vulnerabilities Exploited for Monero Mining Malware Delivered via GitHub, Netlify

We looked into exploitation attempts we observed in the wild and the abuse of legitimate platforms Netlify and GitHub as repositories for malware. By: Nitesh Surana December 03, Read time: words. If this vulnerability is exploited, it allows attackers to map URLs to files outside the directories configured by Alias-like directives. As the initial fix was deemed insufficient, a bypass was later reported for the fix and tracked as CVE However, when we looked at the malicious samples abusing this vulnerability, we found more of these exploits being abused to target different gaps in products and packages for malicious mining of Monero. In this blog, we look into the abuse of GitHub and Netlify repositories and platforms for hosting cryptocurrency-mining tools and scripts.

Bitcoin Mining Pools Targeted in Wave of DDOS Attacks

However, other miners on the network seemed to have quickly organized themselves to exploit another vulnerability on the network in order to prevent the malicious miner from being successful. Here's what happened. You really can't make this stuff up.

This is a bullish sign, and can be read as healthy news for the BTC network indicating a potential short-term bull run as BTC price generally increases when the hash rate declines. Hash Rate can be viewed as a measure of how difficult it is to find a hash below a given target, so simply the more miners actively trying to find a hash, the higher the Hash Rate. Mining of the BTC chain SHA is distributed across 16 known mining pools, however, there are an increasing number of mystern hash captures unknown miners that regularly comprise around 7. Some analysts speculate many of these mystery hash captures are done by Iran, however, the exodus of Chinese miners will likely see this number increase as some move into decentralised operations.

We use cookies and other tracking technologies to improve your browsing experience on our site, show personalized content and targeted ads, analyze site traffic, and understand where our audiences come from. To learn more or opt-out, read our Cookie Policy. On Saturday, the Coinbase security team noticed something troubling. Someone had made a deep reorganization in the distributed ledger for Ethereum Classic, a smaller spinoff from the Ethereum coin. The attackers had pulled off the cryptocurrency equivalent of writing a bad check. Coinbase told The Verge that no wallets controlled by the company or its customers were involved. Cryptocurrency wallets get hacked all the time, but this hack was different, striking at the blockchain itself.

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