Threat Trend Report on Kimsuky – April 2023

The Kimsuky group’s activities in April 2023 showed a decline in comparison to their activities in March, falling under half the number of the previous month. Korean domains were used for FlowerPower like before without major changes, and the RandomQuery type also remained the same. Lastly, we confirmed that the domain responsible for distributing AppleSeed has been spreading the Google Chrome Remote Desktop setup script. Also, the dropper file and AppleSeed file used different argument values, which is a shift…

ASEC Weekly Malware Statistics (May 29th, 2023 – June 4th, 2023)

AhnLab Security Emergency response Center (ASEC) uses the ASEC automatic analysis system RAPIT to categorize and respond to known malware. This post will list weekly statistics collected from May 29th, 2023 (Monday) to June 4th, 2023 (Sunday). For the main category, downloader ranked top with 40.1%, followed by Infostealer with 39.5%, backdoor with 13.6%, CoinMiner with 4.1%, and ransomware with 2.7%. Top 1 – AgentTesla AgentTesla is an Infostealer that ranked first place with 21.4%. It leaks user credentials saved…

ASEC Weekly Phishing Email Threat Trends (May 21st, 2023 – May 27th, 2023)

AhnLab Security Emergency response Center (ASEC) monitors phishing email threats with the ASEC automatic sample analysis system (RAPIT) and honeypot. This post will cover the cases of distribution of phishing emails during the week from May 21st, 2023 to May 27th, 2023 and provide statistical information on each type. Generally, phishing is cited as an attack that leaks users’ login account credentials by disguising as or impersonating an institute, company, or individual through social engineering methods. On a broader note,…

Similar AhnLab Response Cases Regarding Korea-US Joint Cyber Security Advice

On June 2nd, the Korean NIS (National Intelligence Service), NPA (National Police Agency), and MOFA (Ministry of Foreign Affairs) released a joint security advisory regarding the spear phishing attacks of North Korea’s Kimsuky group with the US FBI (Federal Bureau of Investigation), DoS (Department of State), and NSA (National Security Agency). The government agencies stated that the act was done to raise awareness of members of global think tanks, academic institutions, and media companies on CNE (Computer Network Exploitation) using…

Malware Being Distributed Disguised as a Job Application Letter

AhnLab Security Emergency response Center (ASEC) has identified that malware disguised as a job application letter is continuously being distributed. This malware is equipped with a feature that checks for the presence of various antivirus processes including a process with AhnLab’s product name (V3Lite.exe) and is being distributed through malicious URLs designed to resemble a Korean job-seeking website. Below are the discovered download URLs. The malicious file downloaded from the above URLs has a screen saver file extension (.scr) and an…