EST Kimsuky April 2019

Kimsuky has used a PowerShell-based keylogger as well as a tool called MECHANICAL to log keystrokes. Kimsuky has also leveraged Native Windows API functions such as `GetAsyncKeyState()` along with others to capture keystrokes every 50 milliseconds and stores data in a file stored in the temp directory.

Kimsuky has executed a variety of PowerShell scripts including Invoke-Mimikatz. Kimsuky has also utilized PowerShell scripts for execution, persistence, and defense evasion. Kimsuky has leveraged PowerShell’s cmdlet `Expand-Archive` to extract contents of zip files into the same directory. Kimsuky has employed ClickFix type tactics enticing victims to copy and paste malicious PowerShell commands and scripts, where the scripts ultimately led to QuasarRAT.

Kimsuky has used mshta.exe to run malicious scripts on the system.

Kimsuky has sent spearphishing emails containing a link to a document that contained malicious macros or took the victim to an actor-controlled domain.