Blueshell

BlueShell Used in APT Attacks Against Korean and Thai Targets

BlueShell is a backdoor developed in Go. It is available on GitHub and supports Windows, Linux, and Mac operating systems. Currently, it seems the original GitHub repository has been deleted, but the BlueShell source code can be downloaded from other repositories. Notably, the ReadMe file containing the guidelines is in Chinese, and this suggests that the creator may be a Chinese speaker. There aren’t many cases where BlueShell is known to have been used in the attacks unlike SparkRAT, Silver…

Dalbit (m00nlight): Chinese Hacker Group’s APT Attack Campaign

0. Overview This report is a continuation of the “Attackers Using FRP (Fast Reverse Proxy) to Attack Korean Companies” post that was uploaded on August 16, 2022 and follows the group’s activities since that post. This group has always relied on open-source tools and lacked any distinct characteristics to profile them due to the lack of PDB information. Additionally, the amount of information that could be collected was limited unless the affected Korean companies specifically asked for an investigation since…