Hacking organizations 'Lazarus' and 'APT38' supported by the North Korean government were responsible for the loss of $100 million worth of Ethereum from Harmony Horizon in June 2022.
The funds and the seizure of stolen assets were reported to the authorities. The exploiters' activities closely resembled the attempt, which was undertaken on January 13, 2023, since more than $60 million was attempted to be laundered.
The Binance chain, Bitcoin, and Ethereum transfers are made possible through Harmony's Horizon Bridge. Numerous tokens worth $100,000,000 were taken from the network on June 23, 2022.
North Korean cybercriminals were actively shifting a portion of Harmony's Horizon bridge funds during the last weekend as the price of bitcoin approached $24,000. While several cryptocurrency exchanges instantly froze certain cash, Binance CEO Changpeng Zhao (CZ) claimed that some exchanges are not helpful in fighting crime, which made it easier to convert ETH to BTC.
According to reports, the APT38 was able to convert some of the $27 million in Ethers to Bitcoin and withdraw the money from exchanges. The Lazurus group has reportedly been shifting laundered money to a number of addresses in order to mask their true identity through multiple layers.
With the use of its Horizon Bridge, Harmony can transmit data to and from the Ethereum network, Binance Chain, and Bitcoin. On June 23, a number of tokens from the network valued at roughly $100 million were taken.
After the exploit, the Tornado Cash mixer processed 85,700 Ether, which was then deposited at various addresses. The hackers began transferring about $60 million of the stolen money via the Ethereum-based anonymity protocol RAILGUN on January 13. 350 addresses have been linked to the attack through numerous exchanges in an effort to escape detection, according to research by the cryptocurrency tracking tool MistTrack.
Cryptocurrency exchanges like Binance and Huobi have alerted authorities about stolen Harmony's Horizon Bridge funds by freezing them. This demonstrates how DeFi platforms and centralized exchanges are dependent on one another.
After nearly a year of being disrupted by Google, the Glupteba malware botnet has again become active, infecting devices worldwide. As a result of Google's efforts, the blockchain-enabled botnet could be seriously disrupted in December 2021 by securing court orders for control of its infrastructure as well as filing legal claims against two Russian operators.
Based on Nozomi's analysis, blockchain transactions, TLS certificate registrations, and reverse engineering Glupteba samples, there is a new, large-scale campaign of Glupteba that started in May 2022 and continues to be conducted today.
Blockchain as a hiding place
The virus Glupteba is modular and designed using blockchain technology. It aims to mine cryptocurrencies, steal user credentials and cookies, and deploy proxy servers on Windows and IoT systems. A large percentage of the malware is distributed through malvertising on a pay-per-install (PPI) network or traffic distribution system (TDS) pushing installers disguised as free software, videos, and movies by cybercriminals, after which they are sold to other cybercriminals as 'residential proxies.'
As part of its evasion strategy, Glupteba utilizes the Bitcoin blockchain to obtain updated lists of command and control servers so that it can contact them to execute commands.
A discover function in the botnet's clients allows them to find the address of the C2 server in an encrypted format. With this method, they enumerate the servers of Bitcoin wallets, retrieve their transactions, and then parse them to find an AES-encrypted address in an encoded format. Since Glupteba has employed this approach for many years, they offer a resilient stance against attacks.
There is no way to wipe out blockchain transactions, so C2 address takedown efforts have a limited impact on the botnet since blockchain transactions cannot be erased. Additionally, law enforcement cannot plant payloads onto the controller address of Bitcoin without a Bitcoin private key. It means there can be no sudden botnet takeovers or global deactivations, like what happened to Emotet in early 2021.
It is pertinent to note that Bitcoin is a public blockchain, which means anyone is entitled to access it and scrutinize transactions to gather information.
It was reported by Nozomi that Glupteba continues to use blockchain in the same manner as it used years ago. Therefore, it was only a matter of scanning the whole blockchain to reveal hidden C2 domains within the network.
Tremendous effort was put into the process, which involved the scrutiny of more than 1,500 Glupteba samples uploaded to VirusTotal. Several samples were analyzed so that wallet addresses could be extracted and encryption keys associated with the malware could be used to decrypt transaction payload data.
Further, Nozomi made use of passive DNS records to find domains and hosts associated with Glupteba.
The team examined the latest set of TLS certificates issued by the malware to unearth more information about the infrastructure the malware relies upon.
An investigation by Nozomi identified 15 Bitcoin addresses that participated in the Glupteba campaign four times. This was the most recent one starting in June 2022, six months after Google disrupted the campaign. It is still in the midst of this campaign.
The botnet is now even more resilient because it uses more Bitcoin addresses than ever. As a result of similar redundancy efforts, the number of TOR hidden services used as C2 servers has increased 10-fold since the 2021 campaign, following the same model.
A particularly prolific address had 11 transactions over the past year, and more than 1,197 samples were connected to it. The last activity occurred on 11/8/2022, which made it the most active address. Also, Nozomi reports that many Glupteba domain registrations have been discovered in passive DNS data since November 22, 2022.
Based on the information provided above, it is obvious that the Glupteba botnet has struck back at the scene and is again in attack mode. This organization is now much larger than it once was and has the potential to become even more resilient as a result. Because of the number of fallback addresses, it has set up, it is resisting any takedown attempts by researchers and law enforcement agencies due to their tightening up of security.
According to the latest report by Interisle Counseling Gathering, illegal activities pertaining to cryptocurrencies have grown by 257% over the past year, with wallets and trades being the most vulnerable to attacks.
Cybercriminals are experiencing exceptional results in their operations, by engaging in techniques similar to methods used in other online monetary crimes on virtual monetary forms.
How is Cryptocurrency the Most Suitable for Cybercrime?
The autonomous, anonymous and permanent attributes of crypto transactions make cryptocurrency ideal for cybercrime activities.
Crypto has emerged as a highly-priced vehicle for threat actors for the following reasons:
1. No Oversight: Fundamental authorities such as banks, or government agencies, which generally play the role of a middleman in financial transactions, do not intervene in crypto transactions.
2. Anonymity of threat actors: Crypto transactions do not transmit any detail that could possibly disclose the hacker in any way, such as names, email addresses, or other background information. There is only one wallet address, which is a collection of otherwise cryptic letters and numbers. Additionally, hackers frequently use numerous wallets to further "wash" transactions.
3. Transactions are permanent: In crypto, money being exchanged cannot be reversed. The transaction is out of an individual's hands, just like using cash. Additionally, hackers can easily flee the scene of cybercrime, like ransomware, without being detected.
With the constant decline in the value of cryptocurrency, cybercriminals who have considerable expertise in ransomware attacks are compelled to reconsider how they collect their payoffs and the amount they could demand.
The crypto crash has as well resulted in the bankruptcy of many online crypto-trade commercial centers, where cybercriminals apparently deal with their cash or payoffs. For an instance, last year, at least 30 more modest dim web trade centers went bankrupt, and later closed down. Hackers still retain the mentality of a conventional financial backer: if the value of a resource starts to decline, they usually cash out rapidly to limit their losses.
Blockchain Paving Way for Advanced Network Protection:
Blockchain technology emerged as a significant founding for Bitcoin over 10 years ago, while it was also largely compared to the cryptocurrencies at that time. However, advanced blockchain application, like Ethereum has become more widely popular, for it has newer market segments such as non-fungible tokens (NFTs) and decentralized, distributed-computing led finance platforms.
This decentralized and consensus-oriented characteristic of Blockchain allows higher resilience to cyberattacks. In the presence of Blockchain, the threat actor will need to acquire control of the majority of nodes to alter ledger transactions, which is extremely difficult and costly, in order to be able to carry out a hack successfully.
Moreover, a domain name server (DNS) that maps IP addresses to a website name can also be moved to a blockchain platform, dispersing resources across various nodes and making it more difficult for the hacker to access the data. Thus, making blockchain systems a technology that could be a game changer in combating future cybercrimes.
Crypto and Cyber Skills Rules the Day
The new generation of tech experts is currently in the forefront to combat cybercrime, with their advanced skillsets and tools that operate a step ahead of threat actors. From becoming a Blockchain Developer, where one can master architectural principles of blockchain and develop apps in a corporate environment, to becoming a Certified Ethical Hacker (CEH), where you are trained to investigate vulnerabilities in target systems and utilize the same techniques as malicious hackers, one can procure great opportunities to combat cybercrimes in crypto.
After customers complained about their funds being stolen, Solana, a blockchain that is growing in popularity for its quick transactions, became the subject of the most recent breach in the cryptocurrency world.
The platform has launched an inquiry and is currently attempting to ascertain how the hackers were able to steal the money.
What is SOL?
The value of Solana's stake, dropped by 7% to $38.4 in the past day, marking its lowest level in a week.
Solana is an open-source project that relies on the permissionlessness of blockchain technology to offer decentralized financial (DeFi) solutions. According to CoinGecko, end-user applications in the Solana ecosystem include non-fungible tokens (NFT), marketplaces, gaming, e-commerce, and decentralized finance (DeFi).
According to CoinGecko, Solana is one of the top 10 cryptocurrency assets in terms of market value, although its value has fallen significantly from its all-time high of $259.96 reached in November 2021.
The primary reason for the breach
The security problem appears to have affected more than 8,000 wallets, depleting them of their SOL tokens and USDC stablecoins, according to Changpeng Zhao, CEO of cryptocurrency exchange Binance.
A blockchain consulting firm called Elliptic stated that the attack started on August 2 and has already resulted in the data theft of $5.8 million for its clients. The Solana cryptocurrency, and non-fungible tokens, as per the report, were among the stolen goods.
Elliptic noted that the issue didn't seem to be with the blockchain core, the digital ledger of transactions that serves as the foundation of cryptocurrency assets, but rather with software utilized by such wallets.
Phantom, Slope, and TrustWallet are among the other wallets that have been compromised by the hack.
Several blockchain security experts believe that a supply chain attack, a browser zero-day vulnerability, or a flawed random number generator used during the key generation process might have been leveraged to access such a huge number of private keys.