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[Joint Cybersecurity Advisory] Operation Double Barrel (The Relationship Between a State-Sponsored Threat Actor and the Gunra Ransomware Group)
This technical analysis report was prepared as part of the joint cybersecurity advisory titled “Advisory on Cyberattacks Targeting Korean Citizens and Businesses by State-Sponsored Hacking Groups” issued by the Republic of Korea’s National Intelligence Service (NIS), National Police Agency (NPA), Korea Internet & Security Agency (KISA), and Financial Security Institute
Attack Cases by the Kimsuky Group Impersonating Diplomats (PebbleDash, PrxClient)
AhnLab SEcurity intelligence Center (ASEC) previously disclosed an attack case in which the Kimsuky group used spear phishing attacks to install the PebbleDash malware in a post titled “Analysis of the Kimsuky Group’s Latest Attacks Exploiting PebbleDash and RDP Wrapper” [1]. The same threat actors have continued their activities in
Distribution of PebbleDash Malware in March 2025
PebbleDash is a backdoor malware that was previously identified by the Cybersecurity and Infrastructure Security Agency (CISA) in the U.S. as a backdoor malware of Lazarus (Hidden Corba) in 2020. At the time, it was known as the malware of the Lazarus group, but recently, there have been more cases
Analysis of Lazarus Group’s Attack on Windows Web Servers
AhnLab SEcurity intelligence Center (ASEC) has identified attack cases of the Lazarus group breaching a normal server and using it as a C2. Attacks that install a web shell and C2 script on South Korean web servers continue to occur. Additionally, there are cases where LazarLoader malware and privilege escalation
Analysis Report on Kimsuky Group’s APT Attacks (AppleSeed, PebbleDash)
This document is an analysis report on types of malware recently utilized by the Kimsuky group. The Kimsuky group is mainly known for launching social engineering attacks such as spear phishing. Judging by the names of the attached files, the group seems to be targeting those working in the fields
