In a joint warning issued by the German and South Korean intelligence agencies, it has been noted that a North Korean hacker group named Kimsuky has been increasing cyber-attack tactics against the South Korean network. With sophisticated phishing campaigns and malware attacks, the group has been suspected of being behind the attacks. It is believed that the North Korean government is behind them. Cyberattacks continue to pose a major threat to businesses and governments throughout the world as a result of increasing cyberattacks.
Kimsuky (aka Thallium and SmokeScreen) is a North Korean threat group that has developed a reputation for utilizing cutting-edge tools and tactics in its operations. There have been two upcoming attack tactics developed by the group that enhances the espionage capabilities of the organization. These tactics raise no red flags on security radars. There are several malicious Android apps and YouTube extensions being abused as well as Google Chrome extensions.
Kimsuky is believed to have expanded its tactics to attack a wide range of organizations in both countries, according to the German Office for Information Security (BSI) and South Korea's National Intelligence Service (NIS). Initially targeting U.S. government agencies, research institutions, and think tanks, the group has now spread to businesses in the technology and defense sectors as well.
Kimsuky appears to be using a new malware called "BookCove" to steal sensitive information from its targets, according to a statement issued by the company. A spear-phishing email is designed to appear like it has been sent from a reputable source, but in reality, the message contains malware. Upon clicking the link or attachment in an email that contains malware, the user's computer is infected with the malware. The hacker can have access to the victim's data and can monitor the activities of the victim as a result of this. \
Various South Korean and German agencies suggest that organizations should implement the necessary precautions to safeguard themselves against these threats. Security measures must be taken, such as multi-factor authentication and regular updates, and employees must be educated on the risks associated with phishing.
North Korean hacking group, Kimsuky, has been operating since 2013, providing malware for PCs. Several sources claim that the group is linked to the Reconnaissance General Bureau of the North Korean government. This Bureau gathers intelligence and conducts covert operations on behalf of the government.
According to research, the apps, which embed FastFire and FastViewer, are distributed through Google Play's "internal testing" feature. This gives third-party developers the ability to send apps to a "small set of trusted testers."
Nevertheless, it bears mentioning that these internal app testing exercises cannot exceed 100 users per app, regardless of the number of users. This is regardless of when the app is released into production. There is no doubt that this campaign has a very targeted nature, which indicates its focus.
Two malware-laced apps use Android's accessibility services to steal sensitive information ranging from financial to personal information. APK packages for each app are listed below with their respective names in APK format:
- Com. viewer. fast secure (FastFi)
- Com.tf.thinkdroid.secviewer (FastViewer)
A multi-factor authentication system protects the network and system from unauthorized access since it requires the attacker to possess at least two factors, such as a password and a physical device, such as a mobile phone.
Even if cyber criminals could get past some existing security measures, this would make it far harder for them to access private data.
In addition to the above-mentioned measures, organizations may also wish to consider taking the following measures to protect themselves:
- Maintaining a regular software update schedule is important.
- The best practices for protecting your company's information are taught to your employees.
- It is essential to use tools and techniques to detect and respond to advanced threats.
A growing number of companies are attacked by state-sponsored groups like Kimsuky due to cyberattacks. To reduce their risk of falling victim to these sophisticated cyber-espionage tactics, businesses and governments in Germany need to take proactive steps to protect themselves, including improving their security systems.
Operating silently, Kimsuky has continuously evolved its TTPs to keep up with changing threats, as well as developing efficient tactics. The majority of attacks are conducted using phishing or spear-phishing. The most significant priority that must be addressed against this threat is to protect the accounts of individuals or organizations and other critical assets. Those involved in organizations and individuals are advised to keep abreast of the latest tactics and adhere to relevant agencies' recommendations.