CVE-2023-46604

Mimo CoinMiner and Mimus Ransomware Installed via Vulnerability Attacks

AhnLab SEcurity intelligence Center (ASEC) recently observed circumstances of a CoinMiner threat actor called Mimo exploiting various vulnerabilities to install malware. Mimo, also dubbed Hezb, was first found when they installed CoinMiners through a Log4Shell vulnerability exploitation in March 2022. Up until now, all of the attack cases involved the installation of XMRig CoinMiner called Mimo Miner Bot in the final stage. However, there were other pertinent cases where the same threat actor installed Mimus ransomware, proxyware, and reverse shell…

Apache ActiveMQ Vulnerability (CVE-2023-46604) Continuously Being Exploited in Attacks

In November 2023, AhnLab Security Emergency response Center (ASEC) published a blog post titled “Circumstances of the Andariel Group Exploiting an Apache ActiveMQ Vulnerability (CVE-2023-46604)” [1] which covered cases of the Andariel threat group exploiting the CVE-2023-46604 vulnerability to install malware. This post not only covered attack cases of the Andariel group but also those of HelloKitty Ransomware, Cobalt Strike, and Metasploit Meterpreter. Since then, the Apache ActiveMQ vulnerability (CVE-2023-46604) has continued to be exploited by various threat actors. This…

Circumstances of the Andariel Group Exploiting an Apache ActiveMQ Vulnerability (CVE-2023-46604)

While monitoring recent attacks by the Andariel threat group, AhnLab Security Emergency response Center (ASEC) has discovered the attack case in which the group is assumed to be exploiting Apache ActiveMQ remote code execution vulnerability (CVE-2023-46604) to install malware. The Andariel threat group usually targets South Korean companies and institutions, and the group is known to be either in a cooperative relationship of the Lazarus threat group, or a subsidiary group of Lazarus. Their attacks against South Korea were first…