This and last week, the Certego Incident Response team handled a powershell based Active Directory compromise on multiple of our customer networks. Although the actors seemed to be intent on spreading a Cryptominer malware, due to some technical aspects the campaign could hide a second goal. Considering that more and more attacks are aimed to making lateral movements to compromise enterprise domains, today we decided to share with you some details of detection and response actions performed by Certego IRT to handle these threats. Note: to prevent antivirus from blocking this site we are forced to share the code via screenshots, the main samples have been uploaded to virustotal. In most of the scenarios observed the threat came from unmonitored Domain Trusts, in the remaining cases we were engaged after the first access was already performed.
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- Popular antivirus maker force-installs cryptominer on devices
- How to remove a Trojan.BitCoinMiner Miner Infection
- Conseils pour Suppression Pua/cryptominer.gen de Windows 10
- Cyber security glossary
- Yes, your device can be hit with a cryptominer
- New fileless crypto-miner targets corporate networks across the world: PowerGhost
- Protection against the Coinminer malware
- Free bitcoin miner
- Lemon Duck Cryptominer Spreads through Covid-19 Themed Emails
Popular antivirus maker force-installs cryptominer on devices
Other sections. Last year we published a story revealing the rise of miners across the globe. At the time we had discovered botnets earning millions of USD. We knew this was just the beginning of the story, which turned out to develop rapidly. Together with the rest of the world, we have been watching the hike in cryptocurrency, for example, the price of Bitcoin and Altcoins continuously beat records throughout As a result, many cybercriminal groups have switched to malicious miner distribution, and the number of users that have encountered cryptocurrency miners has increased dramatically.
We have found, that by the end of , 2. Number of Kaspersky Lab users attacked by malicious miners in They become so active and popular that even ransomware — which has frightened the world for the last couple of years, seems to step aside for this threat.
Firstly, miners and ransomware both have a clear monetization model. The miners model is similar in its simplicity: attackers infect victims, make coins using CPU or GPU power, and earn real money through legal exchanges and transactions.
In general, users use their computer for Internet surfing. This activity is not high loaded for CPU. Most importantly, it is now very easy to make your own miner. Those interested can get everything that they need:. Usually, threat actors collaborate with potentially unwanted application PUA partner programs to spread miners. However, some small criminal groups try to spread malware by using different social engineering tricks, such as fake lotteries, etc.
Potential victims need to download a generator of random numbers from a file-sharing service and run this on a PC to participate. Another popular method is web-mining through a special script being executed in browser. For example, in our security solutions stopped the launch of web miners on more than 70 million occasions. The most popular script used by cybercriminals is Coinhive, and usual cases of its use in the wild are websites with a lot of traffic. However, other examples of its legal use are also known.
There are other groups, which do not need to spread miners to many people. Instead, their targets are powerful servers in big companies. Thus, for instance, Wannamine was spreading in internal networks using an EternalBlue exploit, and earned nine thousand Monero this way approx. However, the first miner that used the EternalBlue exploit was Adylkuzz. In our previous research we described another miner family — Winder — that has used an extra service to restore a miner when it was being deleted by an AV product.
That botnet earned a half million dollars. This year we are observing the next trend — threat actors behind miners have begun to use malware techniques from targeted attacks.
In this case the infection vector is a PUA module. A victim may have just wanted to download a legitimate application, but instead they downloaded a PUA with a miner installer inside. This miner installer drops the legitimate Windows utility msiexec with a random name, which downloads and executes a malicious module from the remote server.
This body executes the legitimate system process and uses a process-hollowing technique legitimate process code is changed to malicious. Also, a special flag, system critical flag, is set to this new process. If a victim tries to kill this process, the Windows system will reboot.
So, it is a challenge for security solutions to deal with such malicious behavior and detect the threat properly. Using such sophisticated technique, botnets earned over seven million dollars during the second half of Also this year, we found one threat group that has been targeting big organizations with the main purpose to utilize their computer resources for mining.
After getting into a corporate network they get access to the domain controller, and as a result they use domain policies to launch malicious code. In this particular case, actors executed malicious PowerShell script on each endpoint and server inside the corporate network.
Should we expect a further evolution in this class of malware? For sure. Moreover, we will see a spread in malware that uses new blockchain technologies. One of the recent and very promising technologies is the blockchain-based proof-of-space PoSpace concept. Unlike proof-of-work PoW used in general mining botnets, a PoSpace algorithm needs a hard disk space.
Therefore, a new type of miners based on this algorithm will be aiming first of all at big data servers. On the one hand, monetization in this case is like that in usual malware miners with a PoW algorithm. On the other, this technology can provide cybercriminals with another profit.
The blockchain on the PoS algorithm is a very big decentralized anonymous data center that can be used to spread malware or illegal content. As a result, it can bring more damage. Data will be encrypted and no one will know where it is physically stored. Your email address will not be published. Great article. This is presented well and very informative! Reaper is a nation-state sponsored APT actor. Recently, we had an opportunity to perform a deeper investigation on a host compromised by this group.
All Rights Reserved. Registered trademarks and service marks are the property of their respective owners. Solutions for:. Content menu Close. Threats Threats. Categories Categories. Authors Anton Ivanov Evgeny Lopatin. Bitcoin and Altcoins prices growth in Statistics for used legitimate pools.
Example of wallet information. Infection chain. Process hollowing example. Malicious powershell script. Mining scheme based on proof-of-concept algorithm. Mining is the new black Your email address will not be published. GReAT webinars. From the same authors. Subscribe to our weekly e-mails The hottest research right in your inbox.
How to remove a Trojan.BitCoinMiner Miner Infection
Conseils pour Suppression Pua/cryptominer.gen de Windows 10
Updated on: March 29, Drupal, deemed as one of the most secure CMS around the world has been in news lately for notorious reasons. The Drupalgeddon 2. The flaw provides an entry point for various other Drupal malware, Kitty being one of them. The malicious crypto mining script takes advantage of the highly critical Drupalgeddon 2. The exploit which was made public in March and is still extant in most versions of Drupal versions 7. The vulnerability exposes Drupal sites to various attack vectors, ultimately leading to backdoor implementations, crypto mining attempts, data theft, and account hijacking. The Base64 decoded source code of the above PHP backdoor is infact simple, as the attacker uses a sha hash function for protecting its remote authentication. The attacker does so by altering the index. The Kitty malware is regularly updated, where everytime the operator adds a new version note.
Cyber security glossary
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Yes, your device can be hit with a cryptominer
Crypto-currency enthusiasts have contributed to a shortage of graphics cards by snapping up supplies to use for non-gaming purposes. Nvidia said it had intervened to make sure its products "end up in the hands of gamers". But it will also sell a bespoke crypto-currency mining processor. A modern card can produce the high-resolution and high frame-rate graphics that gamers expect. But several factors, including manufacturing delays during the coronavirus pandemic, have contributed to a shortage. Graphics cards are also popular with crypto-currency investors, who can use them for processing transactions and generating bitcoins, in a process known as mining.
New fileless crypto-miner targets corporate networks across the world: PowerGhost
An opportunistic botnet that tries not always successfully to fly under the radar, Kingminer is nevertheless a persistent nuisance that delivers cryptocurrency miners as a payload. This morning, SophosLabs is releasing our report, An insider view into the increasingly complex Kingminer botnet. The Kingminer botnet uses two main approaches in hosting the delivered content. The first one relies on servers that the criminals registered and manage themselves, usually using a simple time-coded domain name generation algorithm DGA. These servers deliver the components with clearly malicious content.
Protection against the Coinminer malware
Remove threat synonym. If a bomb threat is received by phone: 1. Regional integration refers to various types of political and economic agreements that form closer ties between sovereign countries. Afterward, open wp-config.
Free bitcoin minerRELATED VIDEO: Simple Bitcoin Miner in Python
As the value of cryptocurrencies like Bitcoin and Monero skyrocketed last year, a more sinister trend came with it. Cybercriminals saw the opportunity to hijack unprotected computers to use their processing power to mine cryptocurrency — an activity that involves calculating extremely complex mathematical problems. First, we need to understand the nature of cryptocurrencies. These digital currencies are based on cryptography also referred to as hash algorithms that record financial transactions. There are only a certain number of hashes available, which help establish the relative value of each unit. Creating new units of a cryptocurrency involves solving complex mathematical problem.
Lemon Duck Cryptominer Spreads through Covid-19 Themed Emails
SASE can save your company a lot of money. A large, publicly traded energy company operating in all areas of the oil and gas industry has dramatically simplified their network stack and realized huge cost savings with Versa SASE. EMA evaluates the different SASE vendors and their approaches to architecture, go-to-market, and support for their cloud-delivered and hybrid services. SASE is the simplest, most scalable way to continuously secure and connect the millions points of access in and out of the corporate resources regardless of location. Versa Secure SD-WAN is a single software platform that offers multi-layered security and enables multi-cloud connectivity for Enterprises.
This article aims to help you detect and remove the newly emerged fileless bitcoin miner malware and protect your computer. Bitcoin is a digital cash system. The difference between using bitcoin and using regular money is that bitcoins can be used without having to link any sort of real-world identity to it. Bitcoin mining is a process by which transactions are verified and added as a blockchain.