According to the Seoul Metropolitan Police Agency, the hacker group utilized servers that they had rented from a domestic server rental company to hack into dozens of South Korean organizations, including defense companies. Also, the ransomware campaign acquired ransoms from a number of private sector victim firms.
Earlier this year, the law enforcement agency and the FBI jointly conducted an investigation to determine the scope of Andariel's hacking operations. This was prompted by reports from certain South Korean corporations regarding security problems that were believed to be the result of "a decline in corporate trust."
In an investigation regarding the origin of Andariel, it was found that it is a subgroup of the Lazarus Group. The group has stolen up to 1.2 terabytes of data from South Korean enterprises and demanded 470 million won ($357,000) in Bitcoin as ransom from three domestic and international organizations.
According to a study conducted by Mandiant, it was revealed that Andariel is operated by the North Korean intelligence organization Reconnaissance General Bureau, which gathers intelligence for the regime's advantage by mainly targeting international enterprises, governmental organizations, defense companies, and financial services infrastructure.
Apparently, the ransomware group is also involved in cybercrime activities to raise funds for conducting its operation, using specially designed tools like the Maui ransomware and DTrack malware to target global businesses. In February, South Korea imposed sanctions on Andariel and other hacking groups operating in North Korea for engaging in illicit cyber operations to fund the dictatorial regime's nuclear and missile development projects.
The threat actor has used a number of domestic and foreign crypto exchanges, like Bithumb and Binance, to launder the acquired ransom. Till now, a sum of 630,000 yuan ($89,000) has been transferred to China's K Bank in Liaoning Province. The hackers proceeded to redirect the laundered money from the K Bank branch to a location close to the North Korea-China border.
Seoul police noted that they have seized the domestic servers and virtual asset exchange used by Andariel to conduct their campaigns. Also, the owner of the account, that was used in transferring the ransom, has been detained.
"The Security Investigation Support Department of the Seoul Metropolitan Police Agency is actively conducting joint investigations with related agencies such as the U.S. FBI regarding the overseas attacks, victims and people involved in this incident, while continuing to investigate additional cases of damage and the possibility of similar hacking attempts," the agency said.
The police have warned businesses of the threat actor and have advised them to boost their cybersecurity and update security software to the latest versions. It has also been advised to organizations to encrypt any critical data, in order to mitigate any future attack.
Moreover, police are planning to investigate server rental companies to verify their subscribers’ identities and to ensure that the servers have not been used in any cybercrime activity.
The Federal Security Service of Russia stopped the activities of the hacker group REvil, which was engaged in the theft of money using malware.
The operation was carried out in cooperation with the Investigative Department of the Ministry of Internal Affairs throughout Russia. According to the FSB, hackers developed malicious software, organized the theft of money from foreign bank accounts, and cashed them, including by purchasing expensive goods on the Internet.
"The appeal of the competent US authorities served as the basis for the search activities that reported the leader of the criminal community and his involvement in encroachments on the information resources of foreign high-tech companies," the FSB said.
The FSB of Russia has established the full composition of the REvil criminal community and the involvement of its members in the illegal turnover of payment funds, documentation of illegal activities has been carried out.
REvil has ceased to exist. According to the FSB, at 25 addresses of the places of residence of 14 members of the organized criminal community, over 426 million rubles ($5.5 million) were seized, including in cryptocurrency, $600 thousand, €500 thousand, as well as computer equipment, crypto wallets used to commit crimes, 20 premium cars purchased with funds obtained by criminal means.
"As a result of the joint actions of the FSB and the Ministry of Internal Affairs of Russia, the organized criminal community has ceased to exist, the information infrastructure used for criminal purposes has been neutralized. Representatives of the competent US authorities have been informed about the results of the operation," the FSB reported.
The REvil group is considered one of the most active hacker groups in the world. It has committed several major attacks, including against Apple and the Texas government.
It is worth noting that in the summer of 2021, according to The New York Times, after a conversation about REvil, which took place between US President Joe Biden and Russian leader Vladimir Putin at a summit in Switzerland, hackers disappeared from the darknet. Then the American president called on the Russian Federation to take measures to suppress the activities of cyber criminals operating on its territory.
The American cybersecurity company Proofpoint has discovered that the Kimsuky hacker group, presumably from North Korea, is attacking Russian scientists, foreign policy experts, and non-governmental organizations that deal with various issues of interaction with the DPRK.
It follows from the company's research that hackers send phishing emails to Korean experts on behalf of well-known experts in the Russian Federation.
Alexey Pavlov, Business Development Director of the center for countering cyberattacks Solar JSOC Rostelecom-Solar, explained that the letters contain a link, upon clicking on which the user sees a window for entering a login and password. This is similar to a Windows pop-up window for password-protected network resources. According to the attackers' plan, the victim must enter his credentials. Since the unsecured HTTP protocol is used, hackers get the credentials in cleartext.
The Proofpoint study provides an example of such a letter in Russian, allegedly on behalf of the Executive director of the National Committee for BRICS Research, Georgy Toloraya. “Mass mailings are being sent from fake addresses opened in my name,” he confirmed, adding that the signature was copied from old letters.
"Positive Technologies specialists recorded Kimsuky attacks using Korean themes in August," says Denis Kuvshinov, head of the company's threat research department.
According to Group-IB experts, over the past year, Kimsuky has been quite active in conducting cyber espionage operations not only against South Korea but also countries that support it.
The group has been carrying out thematic attacks since 2018. In 2020, it attacked Russian military and industrial organizations.
Experts believe that Kimsuky will try to purposefully extract valuable documents from specific officials and employees of research organizations. Kimsuky can connect infected computers to a botnet or steal access to crypto wallets.
Commercial espionage remains a rare phenomenon, but the success of this group can set a new trend.
The cybersecurity company Group-IB has discovered traces of new attacks by RedCurl hackers engaged in commercial espionage and theft of corporate documentation from companies from various industries. This time, the victim of the group was a Russian retailer, one of the top 20 largest online stores in Russia.
The company notes that it discovered a new Russian-speaking group last year, in the period from 2018 to 2020, it carried out 26 attacks, 14 victim organizations from different countries were identified. Among the hackers' targets are construction, financial, consulting companies, retailers, banks and insurance, legal organizations located in Russia, Ukraine, the UK, Germany, Canada, and Norway. In 2021, the attacks resumed.
According to experts, commercial espionage remains a rare phenomenon, but the success of this group can set a new trend. The company's specialists noted that since the beginning of 2021, 4 attacks have been recorded.
A feature of the group is the sending of phishing emails to different departments of the organization on behalf of the HR team. After a computer is infected, information about the victim's infrastructure begins to be collected on the organization's network; criminals are interested in the version and name of the infected system, the list of network and logical drives, and the list of passwords.
Experts note that the actions and methods of RedCurl are unique for Russian-speaking hackers, for example, from the moment of infection to data theft, it takes from 2 to 6 months. The group does not use standard means of remote control of compromised devices. Infection, attachment to an infected device, promotion on the network, and theft of documents are carried using self-written and several public tools.
The group does not encrypt the infrastructure of the victim company, does not withdraw money from accounts, and does not demand a ransom for stolen data. This may indicate that hackers are rewarded from other sources, and their goal is to secretly extract valuable information. According to the company, RedCurl is interested in business correspondence, personal files of employees, documentation on various legal entities, and court cases.
Microsoft has announced the activation of the Nobelium cyber group, which attacked the American software developer SolarWinds more than a year ago and gained access to US government data.
Group-IB recorded a successful attack by the criminal group OldGremlin on a Russian medical company. The attackers completely encrypted its corporate network and demanded a ransom of $50,000.
Russian-speaking hackers from the OldGremlin group attacked several Russian companies, despite the ban: among cybercriminals, there is an unspoken rule "do not work on RU".
According to experts, since the spring of 2020, hackers from OldGremlin have conducted at least nine attacks on Russian companies. It is noted that they send malicious emails allegedly on behalf of the Russian media holding RBC, the Russian metallurgical holding, the Minsk Tractor Plant, the Union of microfinance organizations and other individuals and enterprises. Under various pretexts, attackers are asked to click on the link and download the file. After trying to open it on the victim's computer, the backdoor malware TinyPosh runs.
This time a large Russian medical company became the victim of the criminals. After gaining access to the computer of one of the employees, they deleted the organization's backups, and also spread the TinyCrypton ransomware virus on the computers of the employees. As a result of their actions, the work of regional branches of the medical company was stopped. Then the hackers demanded a ransom: they wanted to get 50 thousand dollars in cryptocurrency for restoring access.
"The lack of a strong communication channel between organizations that resist cybercrime, as well as the difficult political situation, lead to the emergence of new criminal groups that feel safe," said Rustam Mirkasymov, head of the dynamic analysis of malicious code at Group-IB. The expert also stressed that businesses often underestimate the threats posed by cybercriminals, and do not use the necessary means of protection.